BlackTreeIndependent security intelligence

Full vulnerability report · 2025

CVE-2022-49972High confidence

xsk: Fix corrupted packets for XDP_SHARED_UMEM

Linux · Linux

7.8HighCVSS 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.

3 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 release	Source package	Vendor state	Fixed version	Evidence
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 record ↗Source updated 9 Sept 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 record ↗Source updated 9 Sept 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 record ↗Source updated 9 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-2022-49972 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitykernel: xsk: Fix corrupted packets for XDP_SHARED_UMEM

156 known affected

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

bpftool as a component of Red Hat Enterprise Linux 8
kernel as a component of Red Hat Enterprise Linux 8
kernel-abi-stablelists as a component of Red Hat Enterprise Linux 8
kernel-abi-whitelists as a component of Red Hat Enterprise Linux 8
kernel-core as a component of Red Hat Enterprise Linux 8
kernel-cross-headers as a component of Red Hat Enterprise Linux 8
kernel-debug as a component of Red Hat Enterprise Linux 8
kernel-debug-core as a component of Red Hat Enterprise Linux 8
kernel-debug-devel as a component of Red Hat Enterprise Linux 8
kernel-debug-modules as a component of Red Hat Enterprise Linux 8
kernel-debug-modules-extra as a component of Red Hat Enterprise Linux 8
kernel-debug-modules-internal as a component of Red Hat Enterprise Linux 8

Summary: A flaw was found in the Linux kernel's xsk component. When multiple network sockets share the same user memory (UMEM) in XDP_SHARED_UMEM mode, packets processed by subsequent sockets can become corrupted. This occurs because the system fails to properly initialize the Direct Memory Access (DMA) addresses for network buffer entries for these additional sockets. This vulnerability can lead to data integrity issues or a denial of service for affected network communications.
Remediation: Fix deferred

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-2022-55252

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

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: Not supplied in the stored EUVD record
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

What, why and how

In the Linux kernel, the following vulnerability has been resolved: xsk: Fix corrupted packets for XDP_SHARED_UMEM Fix an issue in XDP_SHARED_UMEM mode together with aligned mode where packets are corrupted for the second and any further sockets bound to the same umem. In other words, this does not affect the first socket bound to the umem. The culprit for this bug is that the initialization of the DMA addresses for the pre-populated xsk buffer pool entries was not performed for any socket but the first one bound to the umem. Only the linear array of DMA addresses was populated. Fix this by populating the DMA addresses in the xsk buffer pool for every socket bound to the same umem.

What

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

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 → vulnerable operation → 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.: 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:L/AC:L/PR:L/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.
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.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: The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.

Official authority intelligence

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

ENISA EUVD · EUVD-2022-55252Official EUVD mapping

0 linked advisory records.

Official EUVD record

BSI · German · WID-SEC-W-2025-1350Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Ein lokaler Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen.

Official advisory

CERT-FR · French · CERTFR-2025-AVI-1009Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2022-49960 Référence CVE CVE-2022-49962 https://www.cve.org/CVERecord?id=CVE-2022-49962 Référence CVE CVE-2022-49963 https://www.cve.org/CVERecord?id=CVE-2022-49963 Référence CVE CVE-2022-49964 https://www.cve.org/CVERecord?id=CVE-2022-49964 Référence CVE CVE-2022-49965 https://www.cve.org/CVERecord?id=CVE-2022-49965 Référence CVE CVE-2022-49966 https://www.cve.org/CVERecord?id=CVE-2022-49966 Référence CVE CVE-2022-49968 https://www.cve.org/CVERecord?id=CVE-2022-49968 Référence CVE CVE-2022-49969 https://www.cve.org/CVERecord?id=CVE-2022-49969 Référence CVE CVE-2022-49971 https://www.cve.org/CVERecord?id=CVE-2022-49971 Référence CVE CVE-2022-49972 https://www.cve.org/CVERecord?id=CVE-2022-49972 Référence CVE CVE-2022-49977 https://www.cve.org/CVERecord?id=CVE-2022-49977 Référence CVE CVE-2022-49978 https://www.cve.org/CVERecord?id=CVE-2022-49978 Référence CVE CVE-2022-49980 https://www.cve.org/CVERecord?id=CVE-2022-49980 Référence CVE CVE-2022-49981 https://www.cve.org/CVERecord?id=CVE-2022-49981 Référence CVE CVE-2022-49982 https://www.cve.org/CVERecord?id=CVE-2022-49982 Référence CVE CVE-2022-49983 https://www.cve.org/CVERecord?id=CVE-2022-49983 Référence CVE CVE-2022-49984 https://www.cve.org/CVERecord?id=CVE-2022-49984 Référence CVE CVE-2022-49985 https://www.cve.org/CVERecord?id=

Official advisory

CERT-FR · French · CERTFR-2025-AVI-0607Multiples vulnérabilités dans le noyau Linux de SUSE

Official advisory

CERT-FR · French · CERTFR-2025-AVI-0587Multiples vulnérabilités dans le noyau Linux de SUSE

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.: Patch available
Affected: bpftool as a component of Red Hat Enterprise Linux 8; kernel as a component of Red Hat Enterprise Linux 8; kernel-abi-stablelists as a component of Red Hat Enterprise Linux 8; kernel-abi-whitelists as a component of Red Hat Enterprise Linux 8; kernel-core as a component of Red Hat Enterprise Linux 8; kernel-cross-headers as a component of Red Hat Enterprise Linux 8; kernel-debug as a component of Red Hat Enterprise Linux 8; kernel-debug-core as a component of Red Hat Enterprise Linux 8; kernel-debug-devel as a component of Red Hat Enterprise Linux 8; kernel-debug-modules as a component of Red Hat Enterprise Linux 8; kernel-debug-modules-extra as a component of Red Hat Enterprise Linux 8; kernel-debug-modules-internal as a component of Red Hat Enterprise Linux 8; kernel-devel as a component of Red Hat Enterprise Linux 8; kernel-doc as a component of Red Hat Enterprise Linux 8; kernel-headers as a component of Red Hat Enterprise Linux 8; kernel-ipaclones-internal as a component of Red Hat Enterprise Linux 8; kernel-modules as a component of Red Hat Enterprise Linux 8; kernel-modules-extra as a component of Red Hat Enterprise Linux 8; kernel-modules-internal as a component of Red Hat Enterprise Linux 8; kernel-rt as a component of Red Hat Enterprise Linux 8; kernel-rt-core as a component of Red Hat Enterprise Linux 8; kernel-rt-debug as a component of Red Hat Enterprise Linux 8; kernel-rt-debug-core as a component of Red Hat Enterprise Linux 8; kernel-rt-debug-devel as a component of Red Hat Enterprise Linux 8; kernel-rt-debug-kvm as a component of Red Hat Enterprise Linux 8; kernel-rt-debug-modules as a component of Red Hat Enterprise Linux 8; kernel-rt-debug-modules-extra as a component of Red Hat Enterprise Linux 8; kernel-rt-debug-modules-internal as a component of Red Hat Enterprise Linux 8; kernel-rt-devel as a component of Red Hat Enterprise Linux 8; kernel-rt-kvm as a component of Red Hat Enterprise Linux 8; and 126 more
Fixed: < 5.16; 5.19.8 ≤ 5.19.*; 6.0 ≤ *
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.

Evidence and provenance

Published 18 Jun 2025 · Last source change 5 Aug 2026, 08:56 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 2026-08-14

European sourceENISA EUVD · EUVD-2022-55252

Product sourceVendor CSAF · Red Hat Product Security

Remediation sourceVendor CSAF · Red Hat Product Security

CWE sourceUnavailable

NVD statusNVD modified after enrichment

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 →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

2025-06-18CVE published

2026-08-05Fixed release or patch reference recorded

ENISA EUVD · EUVD-2022-55252↗Vendor CSAF · Red Hat Product Security↗CVE authority or vendor 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.

xsk: Fix corrupted packets for XDP_SHARED_UMEM

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

EUVD-2022-55252

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

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