Full vulnerability report · 2026

CVE-2026-64227High confidence

ACPI: driver: Check ACPI_COMPANION() against NULL during probe

Linux · Linux

5.5MediumCVSS 3.1

Recommended action

Patch only the product branches with a verified fix

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 298 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product

Operational reassessment

Published severity in operational context

Open reassessment dashboard →

Published severityMediumOperational priority:Low, lowered one band.downgradedsince 27 Jul 2026

Evidence used

No CISA KEV confirmation is currently recorded.
Exploitation requires an existing local or physical foothold with privileges.
EPSS is 0.16% for the current model date.

Compensating controls

Validate the affected product branch and deploy the verified fixed release.
Restrict local access and enforce least privilege on affected hosts.
Monitor vendor guidance and exploitation sources for a material change.

Verification

Confirm that the asset runs Linux Linux and falls inside the recorded affected range.
Verify the installed build against the product-specific fixed version after deployment.
Validate exposure, authentication requirements and compensating controls in the actual environment.
Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 298 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Red Hat Product Security: 278 affected or under-investigation product states without a fixed product state in the same current advisory
Canonical Ubuntu Security: 20 affected package states with no published fix

Distribution package intelligence

Release-specific package status

Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

25 package states

Package result overrides the generic status

BlackTree has verified remediation for at least one product or source, but the relevant distribution still reports no fixed package for 20 affected package states shown here. Treat those rows as affected with no fix until that distribution publishes a fixed version.

Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution release	Source package	Vendor state	Fixed version	Evidence
Debian trixietrixie · source	`linux`	Vendor fix publishedDebian records a fixed source-package version for this release.	`6.12.100-1`	Debian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · source	`linux`	Not affectedDebian marks this release not affected (fixed-version marker 0).	`Not published in this feed`	Debian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · source	`linux-6.12`	Vendor fix publishedDebian records a fixed source-package version for this release.	`6.12.100-1~deb12u1`	Debian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · source	`linux`	Vendor fix publishedDebian records a fixed source-package version for this release.	`7.0.12-1`	Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · source	`linux`	Vendor fix publishedDebian records a fixed source-package version for this release.	`7.0.12-1`	Debian Security Tracker ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-aws`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-azure`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-azure-fde`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-azure-nvidia`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-gcp`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-gke`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-gkeop`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-ibm`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-lowlatency`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-nvidia`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-nvidia-lowlatency`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-nvidia-tegra`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-oem-6.11`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-oracle`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-raspi`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-raspi-realtime`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-realtime`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-riscv`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`linux-xilinx`	Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 5 Oct 2026

Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current

CVE-2026-64227 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitykernel: ACPI: driver: Check ACPI_COMPANION() against NULL during probe

278 known affected

The vendor explicitly identifies these products as affected by this CVE.

kernel as a component of Red Hat Enterprise Linux 10
kernel-64k as a component of Red Hat Enterprise Linux 10
kernel-64k-core as a component of Red Hat Enterprise Linux 10
kernel-64k-debug as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-core as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-devel as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-devel-matched as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-modules as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-modules-core as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-modules-extra as a component of Red Hat Enterprise Linux 10
kernel-64k-devel as a component of Red Hat Enterprise Linux 10
kernel-64k-devel-matched as a component of Red Hat Enterprise Linux 10

Summary: In the Linux kernel, the following vulnerability has been resolved: ACPI: driver: Check ACPI_COMPANION() against NULL during probe Since every platform driver can be forced to match a device that doesn't match its list of device IDs because of device_match_driver_override(), platform drivers that rely on the existence of a device's ACPI companion object should verify its presence. Accordingly, add requisite ACPI_COMPANION() or ACPI_HANDLE() checks against NULL to 13 platform drivers handling core ACPI devices. Also change the value returned by the ACPI thermal zone driver when the device's ACPI companion is not present to -ENODEV for consistency with the other drivers.
Remediation: Fix deferred

Recommended actionPatch only the product branches with a verified fix

Fix availability varies by product

What, why and how

In the Linux kernel, the following vulnerability has been resolved: ACPI: driver: Check ACPI_COMPANION() against NULL during probe Since every platform driver can be forced to match a device that doesn't match its list of device IDs because of device_match_driver_override(), platform drivers that rely on the existence of a device's ACPI companion object should verify its presence. Accordingly, add requisite ACPI_COMPANION() or ACPI_HANDLE() checks against NULL to 13 platform drivers handling core ACPI devices. Also change the value returned by the ACPI thermal zone driver when the device's ACPI companion is not present to -ENODEV for consistency with the other drivers.

What

Why

The product dereferences a pointer that it expects to be valid but is NULL.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Why

The product dereferences a pointer that it expects to be valid but is NULL.

How

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path: local access → NULL Pointer Dereference → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface: Local
Privileges required: Low: a basic authenticated account is required
User interaction: None
Attack complexity: Low: no specialised conditions are recorded
Security boundary: Unchanged: impact remains within the vulnerable component's security authority
Weakness ? CWE means Common Weakness Enumeration: a standard category for the underlying weakness.: CWE-476 ↗
CWE-476: NULL Pointer Dereference. The product dereferences a pointer that it expects to be valid but is NULL.
CVSS vector ? CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land: The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.

CWE-476

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-48635Official EUVD mapping

0 linked advisory records.

Official EUVD record ↗

BSI · German · WID-SEC-2026-2527Linux Kernel: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um nicht näher spezifizierte Angriffe durchzuführen, dazu können DoS-Angriffe, die Offenlegung von Informationen, die Beschädigung des Speichers oder die Umgehung von Sicherheitsmaßnahmen gehören.

Official advisory ↗

Cyber Security Agency of Singapore · English · CSA-SB-20260729Security Bulletin 29 Jul 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 29 Jul 2026, published on 29 July 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-1252Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-64218 Référence CVE CVE-2026-64219 https://www.cve.org/CVERecord?id=CVE-2026-64219 Référence CVE CVE-2026-64220 https://www.cve.org/CVERecord?id=CVE-2026-64220 Référence CVE CVE-2026-64221 https://www.cve.org/CVERecord?id=CVE-2026-64221 Référence CVE CVE-2026-64222 https://www.cve.org/CVERecord?id=CVE-2026-64222 Référence CVE CVE-2026-64223 https://www.cve.org/CVERecord?id=CVE-2026-64223 Référence CVE CVE-2026-64224 https://www.cve.org/CVERecord?id=CVE-2026-64224 Référence CVE CVE-2026-64225 https://www.cve.org/CVERecord?id=CVE-2026-64225 Référence CVE CVE-2026-64226 https://www.cve.org/CVERecord?id=CVE-2026-64226 Référence CVE CVE-2026-64227 https://www.cve.org/CVERecord?id=CVE-2026-64227 Référence CVE CVE-2026-64228 https://www.cve.org/CVERecord?id=CVE-2026-64228 Référence CVE CVE-2026-64229 https://www.cve.org/CVERecord?id=CVE-2026-64229 Référence CVE CVE-2026-64230 https://www.cve.org/CVERecord?id=CVE-2026-64230 Référence CVE CVE-2026-64231 https://www.cve.org/CVERecord?id=CVE-2026-64231 Référence CVE CVE-2026-64232 https://www.cve.org/CVERecord?id=CVE-2026-64232 Référence CVE CVE-2026-64233 https://www.cve.org/CVERecord?id=CVE-2026-64233 Référence CVE CVE-2026-64234 https://www.cve.org/CVERecord?id=CVE-2026-64234 Référence CVE CVE-2026-64235 https://www.cve.org/CVERecord?id=

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-1229Multiples vulnérabilités dans le noyau Linux d'Ubuntu

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-1162Multiples vulnérabilités dans le noyau Linux d'Ubuntu

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-1066Multiples vulnérabilités dans le noyau Linux d'Ubuntu

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-1031Multiples vulnérabilités dans le noyau Linux de Debian LTS

d?id=CVE-2026-63815 Référence CVE CVE-2026-63816 https://www.cve.org/CVERecord?id=CVE-2026-63816 Référence CVE CVE-2026-63818 https://www.cve.org/CVERecord?id=CVE-2026-63818 Référence CVE CVE-2026-63829 https://www.cve.org/CVERecord?id=CVE-2026-63829 Référence CVE CVE-2026-63970 https://www.cve.org/CVERecord?id=CVE-2026-63970 Référence CVE CVE-2026-64187 https://www.cve.org/CVERecord?id=CVE-2026-64187 Référence CVE CVE-2026-64189 https://www.cve.org/CVERecord?id=CVE-2026-64189 Référence CVE CVE-2026-64192 https://www.cve.org/CVERecord?id=CVE-2026-64192 Référence CVE CVE-2026-64206 https://www.cve.org/CVERecord?id=CVE-2026-64206 Référence CVE CVE-2026-64227 https://www.cve.org/CVERecord?id=CVE-2026-64227 Référence CVE CVE-2026-64241 https://www.cve.org/CVERecord?id=CVE-2026-64241 Référence CVE CVE-2026-64248 https://www.cve.org/CVERecord?id=CVE-2026-64248 Référence CVE CVE-2026-64250 https://www.cve.org/CVERecord?id=CVE-2026-64250 Référence CVE CVE-2026-64256 https://www.cve.org/CVERecord?id=CVE-2026-64256 Référence CVE CVE-2026-64265 https://www.cve.org/CVERecord?id=CVE-2026-64265 Référence CVE CVE-2026-64266 https://www.cve.org/CVERecord?id=CVE-2026-64266 Référence CVE CVE-2026-64268 https://www.cve.org/CVERecord?id=CVE-2026-64268 Référence CVE CVE-2026-64269 https://www.cve.org/CVERecord?id=

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-0981Multiples vulnérabilités dans le noyau Linux de Debian

msg00316 du 31 juillet 2026 https://lists.debian.org/debian-security-announce/2026/msg00316.html Référence CVE CVE-2026-45944 https://www.cve.org/CVERecord?id=CVE-2026-45944 Référence CVE CVE-2026-53005 https://www.cve.org/CVERecord?id=CVE-2026-53005 Référence CVE CVE-2026-53260 https://www.cve.org/CVERecord?id=CVE-2026-53260 Référence CVE CVE-2026-53365 https://www.cve.org/CVERecord?id=CVE-2026-53365 Référence CVE CVE-2026-63970 https://www.cve.org/CVERecord?id=CVE-2026-63970 Référence CVE CVE-2026-64192 https://www.cve.org/CVERecord?id=CVE-2026-64192 Référence CVE CVE-2026-64206 https://www.cve.org/CVERecord?id=CVE-2026-64206 Référence CVE CVE-2026-64227 https://www.cve.org/CVERecord?id=CVE-2026-64227 Référence CVE CVE-2026-64286 https://www.cve.org/CVERecord?id=CVE-2026-64286 Référence CVE CVE-2026-64287 https://www.cve.org/CVERecord?id=CVE-2026-64287 Référence CVE CVE-2026-64307 https://www.cve.org/CVERecord?id=CVE-2026-64307 Référence CVE CVE-2026-64341 https://www.cve.org/CVERecord?id=CVE-2026-64341 Référence CVE CVE-2026-64352 https://www.cve.org/CVERecord?id=CVE-2026-64352 Référence CVE CVE-2026-64361 https://www.cve.org/CVERecord?id=CVE-2026-64361 Référence CVE CVE-2026-64363 https://www.cve.org/CVERecord?id=CVE-2026-64363 Référence CVE CVE-2026-64364 https://www.cve.org/CVERecord?id=

Official advisory ↗

CERT-FR · French · CERTFR-2026-AVI-0954Multiples vulnérabilités dans le noyau Linux d'Ubuntu

Official advisory ↗

JVN iPedia · Japanese · JVNDB-2026-028250LinuxのLinux KernelにおけるNULL ポインタデリファレンスに関する脆弱性

Linuxカーネルにおいて、以下の脆弱性が修正されました。ACPIドライバーのプローブ中に、ACPI_COMPANION()がNULLでないかをチェックするようにしました。すべてのプラットフォームドライバーは、device_match_driver_override()の影響により、自身のデバイスIDリストに一致しないデバイスに強制的にマッチさせられる可能性があります。そのため、デバイスのACPIコンパニオンオブジェクトの存在を前提とするプラットフォームドライバーは、その存在を必ず確認しなければなりません。このため、コアACPIデバイスを扱う13のプラットフォームドライバーに対して、ACPI_COMPANION()またはACPI_HANDLE()のNULLチェックを追加しました。また、ACPIサーマルゾーンドライバーについては、デバイスのACPIコンパニオンが存在しない場合に返される値を、他のドライバーとの整合性を保つために-ENODEVに変更しました。

Official advisory ↗

Patch and workaround

Operational remediation based on structured source evidence.

Status ? Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.: Fix availability varies by product
Affected: kernel as a component of Red Hat Enterprise Linux 10
kernel-64k as a component of Red Hat Enterprise Linux 10
kernel-64k-core as a component of Red Hat Enterprise Linux 10
kernel-64k-debug as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-core as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-devel as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-devel-matched as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-modules as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-modules-core as a component of Red Hat Enterprise Linux 10
kernel-64k-debug-modules-extra as a component of Red Hat Enterprise Linux 10
kernel-64k-devel as a component of Red Hat Enterprise Linux 10
kernel-64k-devel-matched as a component of Red Hat Enterprise Linux 10
kernel-64k-modules as a component of Red Hat Enterprise Linux 10
kernel-64k-modules-core as a component of Red Hat Enterprise Linux 10
kernel-64k-modules-extra as a component of Red Hat Enterprise Linux 10
kernel-abi-stablelists as a component of Red Hat Enterprise Linux 10
kernel-core as a component of Red Hat Enterprise Linux 10
kernel-debug as a component of Red Hat Enterprise Linux 10
kernel-debug-core as a component of Red Hat Enterprise Linux 10
kernel-debug-devel as a component of Red Hat Enterprise Linux 10
kernel-debug-devel-matched as a component of Red Hat Enterprise Linux 10
kernel-debug-modules as a component of Red Hat Enterprise Linux 10
kernel-debug-modules-core as a component of Red Hat Enterprise Linux 10
kernel-debug-modules-extra as a component of Red Hat Enterprise Linux 10
kernel-debug-uki-virt as a component of Red Hat Enterprise Linux 10
kernel-devel as a component of Red Hat Enterprise Linux 10
kernel-devel-matched as a component of Red Hat Enterprise Linux 10
kernel-doc as a component of Red Hat Enterprise Linux 10
kernel-modules as a component of Red Hat Enterprise Linux 10
kernel-modules-core as a component of Red Hat Enterprise Linux 10
and 248 more
Fixed: Linux: < 6.7, 6.12.97 ≤ 6.12.*, 6.18.40 ≤ 6.18.*, 7.0.11 ≤ 7.0.*, 7.1 ≤ *
Action: Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround: No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.

Evidence and provenance

Published 24 Jul 2026 · Last source change 27 Jul 2026, 04:37 UTC · CWE-476 · NULL Pointer Dereference

CVE recordCVE.org · 5.2

CVSS sourceNIST NVD

EPSS source

The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.

FIRST · tracked since 2026-08-14

European sourceENISA EUVD · EUVD-2026-48635

Product sourceVendor CSAF · Red Hat Product Security

Remediation sourceVendor CSAF · Red Hat Product Security

CWE sourceNIST NVD

NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗

3 Sep 2026, 15:33 UTC
Affected versionsThe structured affected or fixed version information changed.
Before
kernel as a component of Red Hat Enterprise Linux 10; kernel-64k as a component of Red Hat Enterprise Linux 10; kernel-64k-core as a component of Red Hat Enterprise Linux 10; kernel-64k-debug as a component of Red Hat Enterprise Linux 10; kernel-64k-debug-core as a component of Red Hat Enterprise Linux 10; kernel-64k-debug-devel as a component of Red Hat Enterprise Linux 10; kernel-64k-debug-devel-matched as a component of Red Hat Enterprise Linux 10; kernel-64k-debug-modules as a component of Red Hat Enterprise Linux 10; kernel-64k-debug-modules-core as a component of Red Hat Enterprise Linux 10; kernel-64k-debug-modules-extra as a component of Red Hat Enterprise Linux 10; kernel-64k-devel as a component of Red Hat Enterprise Linux 10; kernel-64k-devel-matched as a component of Red Hat Enterprise Linux 10; kernel-64k-modules as a component of Red Hat Enterprise Linux 10; kernel-64k-modules-core as a component of Red Hat Enterprise Linux 10; kernel-64k-modules-extra as a component of Red Hat Enterprise Linux 10; kernel-abi-stablelists as a component of Red Hat Enterprise Linux 10; kernel-core as a component of Red Hat Enterprise Linux 10; kernel-debug as a component of Red Hat Enterprise Linux 10; kernel-debug-core as a component of Red Hat Enterprise Linux 10; kernel-debug-devel as a component of Red Hat Enterprise Linux 10; kernel-debug-devel-matched as a component of Red Hat Enterprise Linux 10; kernel-debug-modules as a component of Red Hat Enterprise Linux 10; kernel-debug-modules-core as a component of Red Hat Enterprise Linux 10; kernel-debug-modules-extra as a component of Red Hat Enterprise Linux 10; kernel-debug-uki-virt as a component of Red Hat Enterprise Linux 10; kernel-devel as a component of Red Hat Enterprise Linux 10; kernel-devel-matched as a component of Red Hat Enterprise Linux 10; kernel-doc as a component of Red Hat Enterprise Linux 10; kernel-modules as a component of Red Hat Enterprise Linux 10; kernel-modules-core as a component of Red Hat Enterprise Linux 10; and 247 more
After
kernel as a component of Red Hat Enterprise Linux 10; kernel-64k as a component of Red Hat Enterprise Linux 10; kernel-64k-core as a component of Red Hat Enterprise Linux 10; kernel-64k-debug as a component of Red Hat Enterprise Linux 10; kernel-64k-debug-core as a component of Red Hat Enterprise Linux 10; kernel-64k-debug-devel as a component of Red Hat Enterprise Linux 10; kernel-64k-debug-devel-matched as a component of Red Hat Enterprise Linux 10; kernel-64k-debug-modules as a component of Red Hat Enterprise Linux 10; kernel-64k-debug-modules-core as a component of Red Hat Enterprise Linux 10; kernel-64k-debug-modules-extra as a component of Red Hat Enterprise Linux 10; kernel-64k-devel as a component of Red Hat Enterprise Linux 10; kernel-64k-devel-matched as a component of Red Hat Enterprise Linux 10; kernel-64k-modules as a component of Red Hat Enterprise Linux 10; kernel-64k-modules-core as a component of Red Hat Enterprise Linux 10; kernel-64k-modules-extra as a component of Red Hat Enterprise Linux 10; kernel-abi-stablelists as a component of Red Hat Enterprise Linux 10; kernel-core as a component of Red Hat Enterprise Linux 10; kernel-debug as a component of Red Hat Enterprise Linux 10; kernel-debug-core as a component of Red Hat Enterprise Linux 10; kernel-debug-devel as a component of Red Hat Enterprise Linux 10; kernel-debug-devel-matched as a component of Red Hat Enterprise Linux 10; kernel-debug-modules as a component of Red Hat Enterprise Linux 10; kernel-debug-modules-core as a component of Red Hat Enterprise Linux 10; kernel-debug-modules-extra as a component of Red Hat Enterprise Linux 10; kernel-debug-uki-virt as a component of Red Hat Enterprise Linux 10; kernel-devel as a component of Red Hat Enterprise Linux 10; kernel-devel-matched as a component of Red Hat Enterprise Linux 10; kernel-doc as a component of Red Hat Enterprise Linux 10; kernel-modules as a component of Red Hat Enterprise Linux 10; kernel-modules-core as a component of Red Hat Enterprise Linux 10; and 248 more
Red Hat Product Security ↗

2026-07-24CVE published

2026-07-27Fixed release or patch reference recorded

ENISA EUVD · EUVD-2026-48635↗Vendor CSAF · Red Hat Product Security↗CVE authority or vendor reference↗Patch or update reference↗Patch or update reference↗Patch or update reference↗Official CVE record (CNA and ADP data)↗NVD record↗

Technical terms and abbreviations used in this report

CVE: Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS: Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS: Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE: Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA: CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP: Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD: National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT: A computer security incident response team that publishes warnings or coordinates incident response.
PoC: Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF: Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL: Living off the land: abuse of legitimate tools or system functions during an attack.

ACPI: driver: Check ACPI_COMPANION() against NULL during probe

Published severity in operational context

Evidence used

Compensating controls

Verification

Remediation availability differs by product scope

Release-specific package status

Authoritative vendor CSAF and VEX advisories

National CERT insights
?
CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

ENISA European Vulnerability Database

EUVD-2026-48635

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

What changed after publication