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Full vulnerability report · 2026
CVE-2026-74508High confidence

Bluetooth: HIDP: reject frames without a transaction header

Linux · Linux

8.8HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
Distribution package intelligence

Ubuntu vendor package status

Canonical’s release and source-package findings are shown separately from local repository availability.

20 package states
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.

Ubuntu releaseSource packageVendor stateFixed versionEvidence
Ubuntu 24.04 LTSnoble · standard archivelinuxAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-awsAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-azureAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-azure-fdeAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-azure-nvidiaAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gcpAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gkeAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gkeopAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-ibmAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-lowlatencyAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidiaAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidia-lowlatencyAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidia-tegraAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-oem-6.11Affected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-oracleAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-raspiAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-raspi-realtimeAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-realtimeAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-riscvAffected, 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 feedCanonical record ↗Source updated 10 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-xilinxAffected, 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 feedCanonical record ↗Source updated 10 Sept 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-2026-74508 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitykernel: Bluetooth: HIDP: reject frames without a transaction header
274 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
A flaw was found in the Linux kernel's Bluetooth Human Interface Device Protocol (HIDP) implementation. A connected HIDP peer can send specially crafted Bluetooth packets that cause the system to read uninitialized memory. This can lead to a denial of service by terminating the HIDP session.
Remediation
Fix deferred
Optional official sources

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

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-59701

No EUVD known-exploited evidence

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HIDP: reject frames without a transaction header hidp_recv_ctrl_frame() and hidp_recv_intr_frame() read skb->data[0] before checking that the L2CAP SDU contains a transaction header. A connected HIDP peer can send an empty basic-mode SDU and make both paths use an uninitialized byte from skb tailroom. KMSAN reports the use in hidp_session_run(), with the uninitialized value originating in __alloc_skb() through vhci_write(). The control path produces two reports and the interrupt path produces one. The byte can also be controlled by a malformed lower-layer packet. If an HCI ACL packet contains an L2CAP PDU with a declared zero-length payload followed by an extra 0x15 byte, l2cap_recv_acldata() reduces skb->len to the declared PDU length before dispatch. The current HIDP path nevertheless consumes the extra byte as HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG and terminates the HIDP session. With this change, the same packet is discarded and a subsequent feature report request succeeds. Pull the transaction header with skb_pull_data() and discard frames that do not contain it.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
8.8 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HIDP: reject frames without a transaction header hidp_recv_ctrl_frame() and hidp_recv_intr_frame() read skb->data[0] before checking that the L2CAP SDU contains a transaction header. A connected HIDP peer can send an empty basic-mode SDU and make both paths use an uninitialized byte from skb tailroom. KMSAN reports the use in hidp_session_run(), with the uninitialized value originating in __alloc_skb() through vhci_write(). The control path produces two reports and the interrupt path produces one. The byte can also be controlled by a malformed lower-layer packet. If an HCI ACL packet contains an L2CAP PDU with a declared zero-length payload followed by an extra 0x15 byte, l2cap_recv_acldata() reduces skb->len to the declared PDU length before dispatch. The current HIDP path nevertheless consumes the extra byte as HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG and terminates the HIDP session. With this change, the same packet is discarded and a subsequent feature report request succeeds. Pull the transaction header with skb_pull_data() and discard frames that do not contain it.

What

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HIDP: reject frames without a transaction header hidp_recv_ctrl_frame() and hidp_recv_intr_frame() read skb->data[0] before checking that the L2CAP SDU contains a transaction header. A connected HIDP peer can send an empty basic-mode SDU and make both paths use an uninitialized byte from skb tailroom. KMSAN reports the use in hidp_session_run(), with the uninitialized value originating in __alloc_skb() through vhci_write(). The control path produces two reports and the interrupt path produces one. The byte can also be controlled by a malformed lower-layer packet. If an HCI ACL packet contains an L2CAP PDU with a declared zero-length payload followed by an extra 0x15 byte, l2cap_recv_acldata() reduces skb->len to the declared PDU length before dispatch. The current HIDP path nevertheless consumes the extra byte as HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG and terminates the HIDP session. With this change, the same packet is discarded and a subsequent feature report request succeeds. Pull the transaction header with skb_pull_data() and discard frames that do not contain it.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through an adjacent network may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HIDP: reject frames without a transaction header hidp_recv_ctrl_frame() and hidp_recv_intr_frame() read skb->data[0] before checking that the L2CAP SDU contains a transaction header. A connected HIDP peer can send an empty basic-mode SDU and make both paths use an uninitialized byte from skb tailroom. KMSAN reports the use in hidp_session_run(), with the uninitialized value originating in __alloc_skb() through vhci_write(). The control path produces two reports and the interrupt path produces one. The byte can also be controlled by a malformed lower-layer packet. If an HCI ACL packet contains an L2CAP PDU with a declared zero-length payload followed by an extra 0x15 byte, l2cap_recv_acldata() reduces skb->len to the declared PDU length before dispatch. The current HIDP path nevertheless consumes the extra byte as HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG and terminates the HIDP session. With this change, the same packet is discarded and a subsequent feature report request succeeds. Pull the transaction header with skb_pull_data() and discard frames that do not contain it.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through an adjacent network may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

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
an adjacent network → vulnerable operation → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Adjacent
Privileges required
None: unauthenticated exploitation is possible
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.
CWE not yet assigned
CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVAdjacentAttack vector: The attacker must be on an adjacent or logically close network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
Unauthenticated
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-59701Official EUVD mapping

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HIDP: reject frames without a transaction header hidp_recv_ctrl_frame() and hidp_recv_intr_frame() read skb->data[0] before checking that the L2CAP SDU contains a transaction header. A connected HIDP peer can send an empty basic-mode SDU and make both paths use an uninitialized byte from skb tailroom. KMSAN reports the use in hidp_session_run(), with the uninitialized value originating in __alloc_skb() through vhci_write(). The control path produces two reports and the interrupt path produces one. The byte can also be controlled by a malformed lower-layer packet. If an HCI ACL packet contains an L2CAP PDU with a declared zero-length payload followed by an extra 0x15 byte, l2cap_recv_acldata() reduces skb->len to the declared PDU length before dispatch. The current HIDP path nevertheless consumes the extra byte as HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG and terminates the HIDP session. With this change, the same packet is discarded and a subsequent feature report request succeeds. Pull the transaction header with skb_pull_data() and discard frames that do not contain it.

Official EUVD record
BSI · German · WID-SEC-W-2026-2852Linux Kernel: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um einen Denial of Service herbeizuführen oder einen nicht näher spezifizierten Angriff durchzuführen.

Official advisory
CERT-FR · French · CERTFR-2026-AVI-1090Multiples vulnérabilités dans le noyau Linux de Debian

d?id=CVE-2026-74498 Référence CVE CVE-2026-74499 https://www.cve.org/CVERecord?id=CVE-2026-74499 Référence CVE CVE-2026-74500 https://www.cve.org/CVERecord?id=CVE-2026-74500 Référence CVE CVE-2026-74501 https://www.cve.org/CVERecord?id=CVE-2026-74501 Référence CVE CVE-2026-74502 https://www.cve.org/CVERecord?id=CVE-2026-74502 Référence CVE CVE-2026-74503 https://www.cve.org/CVERecord?id=CVE-2026-74503 Référence CVE CVE-2026-74504 https://www.cve.org/CVERecord?id=CVE-2026-74504 Référence CVE CVE-2026-74505 https://www.cve.org/CVERecord?id=CVE-2026-74505 Référence CVE CVE-2026-74507 https://www.cve.org/CVERecord?id=CVE-2026-74507 Référence CVE CVE-2026-74508 https://www.cve.org/CVERecord?id=CVE-2026-74508 Référence CVE CVE-2026-74509 https://www.cve.org/CVERecord?id=CVE-2026-74509 Référence CVE CVE-2026-74510 https://www.cve.org/CVERecord?id=CVE-2026-74510 Référence CVE CVE-2026-74512 https://www.cve.org/CVERecord?id=CVE-2026-74512 Référence CVE CVE-2026-74514 https://www.cve.org/CVERecord?id=CVE-2026-74514 Référence CVE CVE-2026-74515 https://www.cve.org/CVERecord?id=CVE-2026-74515 Référence CVE CVE-2026-74516 https://www.cve.org/CVERecord?id=CVE-2026-74516 Référence CVE CVE-2026-74517 https://www.cve.org/CVERecord?id=CVE-2026-74517 Référence CVE CVE-2026-74518 https://www.cve.org/CVERecord?id=

Official advisory
03

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.
Patch available
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 244 more
Fixed
< 2.6.12; 5.10.266 ≤ 5.10.*; 5.15.216 ≤ 5.15.*; 6.1.183 ≤ 6.1.*; 6.6.151 ≤ 6.6.*; 6.12.103 ≤ 6.12.*; 6.18.44 ≤ 6.18.*; 7.1.8 ≤ 7.1.*
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 15 Aug 2026 · Last source change 23 Aug 2026, 12:47 UTC · CWE not yet assigned

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-23
European sourceENISA EUVD · EUVD-2026-59701
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceUnavailable
NVD statusNVD received

Missing structured fields: CWE classification. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates →
  1. Vendor guidanceAuthoritative vendor guidance changed from authoritative remediation link to authoritative remediation link.
    Before
    authoritative remediation link
    After
    authoritative remediation link
    CNA
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 238c333bc4b3f245c626632e8bfa3c9dab97f51b; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 567a2a0a633f2ea5fdccaf3517c09f22c9d860c7; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 46ca5ab39737d7c6f9ca77ecf714cdcfa6caaeec; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 97b61241ab45bfa5b0526cb0f3978942493bc811; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2ebf63aa557a69990b4e9ea22be224d58aabce96; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 854194494a6f726a60b90b76059148bf08df023d; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 47778d2c2087b5d192398f6fddf692d16a5431cf; 2.6.12 · Fixed: < 2.6.12; 5.15.216 ≤ 5.15.*; 6.1.183 ≤ 6.1.*; 6.6.151 ≤ 6.6.*; 6.12.103 ≤ 6.12.*; 6.18.44 ≤ 6.18.*; 7.1.8 ≤ 7.1.*; 7.2 ≤ *
    After
    1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 24c64ccd5c1fc9934b427335b0d976c7f2b1a7d8; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 238c333bc4b3f245c626632e8bfa3c9dab97f51b; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 567a2a0a633f2ea5fdccaf3517c09f22c9d860c7; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 46ca5ab39737d7c6f9ca77ecf714cdcfa6caaeec; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 97b61241ab45bfa5b0526cb0f3978942493bc811; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2ebf63aa557a69990b4e9ea22be224d58aabce96; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 854194494a6f726a60b90b76059148bf08df023d; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 47778d2c2087b5d192398f6fddf692d16a5431cf · Fixed: < 2.6.12; 5.10.266 ≤ 5.10.*; 5.15.216 ≤ 5.15.*; 6.1.183 ≤ 6.1.*; 6.6.151 ≤ 6.6.*; 6.12.103 ≤ 6.12.*; 6.18.44 ≤ 6.18.*; 7.1.8 ≤ 7.1.*
    CNA
  3. Vendor guidanceAuthoritative vendor guidance changed from authoritative remediation link to authoritative remediation link.
    Before
    authoritative remediation link
    After
    authoritative remediation link
    CNA
  4. Affected versionsThe structured affected or fixed version information changed.
    Before
    1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 46ca5ab39737d7c6f9ca77ecf714cdcfa6caaeec; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 97b61241ab45bfa5b0526cb0f3978942493bc811; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2ebf63aa557a69990b4e9ea22be224d58aabce96; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 854194494a6f726a60b90b76059148bf08df023d; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 47778d2c2087b5d192398f6fddf692d16a5431cf; 2.6.12 · Fixed: < 2.6.12; 6.6.151 ≤ 6.6.*; 6.12.103 ≤ 6.12.*; 6.18.44 ≤ 6.18.*; 7.1.8 ≤ 7.1.*; 7.2 ≤ *
    After
    1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 238c333bc4b3f245c626632e8bfa3c9dab97f51b; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 567a2a0a633f2ea5fdccaf3517c09f22c9d860c7; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 46ca5ab39737d7c6f9ca77ecf714cdcfa6caaeec; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 97b61241ab45bfa5b0526cb0f3978942493bc811; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2ebf63aa557a69990b4e9ea22be224d58aabce96; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 854194494a6f726a60b90b76059148bf08df023d; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 47778d2c2087b5d192398f6fddf692d16a5431cf; 2.6.12 · Fixed: < 2.6.12; 5.15.216 ≤ 5.15.*; 6.1.183 ≤ 6.1.*; 6.6.151 ≤ 6.6.*; 6.12.103 ≤ 6.12.*; 6.18.44 ≤ 6.18.*; 7.1.8 ≤ 7.1.*; 7.2 ≤ *
    CNA
  5. Affected versionsThe structured affected or fixed version information changed.
    Before
    1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 46ca5ab39737d7c6f9ca77ecf714cdcfa6caaeec; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 97b61241ab45bfa5b0526cb0f3978942493bc811; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2ebf63aa557a69990b4e9ea22be224d58aabce96; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 854194494a6f726a60b90b76059148bf08df023d; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 47778d2c2087b5d192398f6fddf692d16a5431cf; 2.6.12 · Fixed: < 2.6.12; 6.6.151 ≤ 6.6.*; 6.12.103 ≤ 6.12.*; 6.18.44 ≤ 6.18.*; 7.1.8 ≤ 7.1.*; 7.2-rc6 ≤ *
    After
    1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 46ca5ab39737d7c6f9ca77ecf714cdcfa6caaeec; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 97b61241ab45bfa5b0526cb0f3978942493bc811; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2ebf63aa557a69990b4e9ea22be224d58aabce96; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 854194494a6f726a60b90b76059148bf08df023d; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 47778d2c2087b5d192398f6fddf692d16a5431cf; 2.6.12 · Fixed: < 2.6.12; 6.6.151 ≤ 6.6.*; 6.12.103 ≤ 6.12.*; 6.18.44 ≤ 6.18.*; 7.1.8 ≤ 7.1.*; 7.2 ≤ *
    CNA
  6. SeveritySeverity changed from Unknown to High.
    Before
    Unknown
    After
    High
    CNA
  7. CVSS scoreCVSS score changed from not recorded to 8.8 (CVSS 3.1 · CNA · CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
    Before
    not recorded
    After
    8.8 (CVSS 3.1 · CNA · CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
    CNA
  8. Catalogue recordCVE added to the BlackTree catalogue.
    CNA
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
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.
Free version - for non-commercial use only.CVE-2026-74508 · cve.blacktree.nl