CVE-2026-74710
xsk: require at least 16 bytes of TX metadata
Description
In the Linux kernel, the following vulnerability has been resolved: xsk: require at least 16 bytes of TX metadata AF_XDP accepts a TX metadata length as small as eight bytes, but every supported request needs the flags plus at least one eight-byte request field. Such short metadata also lets the kernel read beyond the registered area. Require 16 bytes rather than sizeof(struct xsk_tx_metadata) to preserve compatibility with applications that do not use launch-time metadata.
INFO
Published Date :
Aug. 22, 2026, 4:16 p.m.
Last Modified :
Oct. 16, 2026, 8:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel.
- Ensure TX metadata is at least 16 bytes.
- Compile applications with updated metadata handling.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-74710.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74710 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-74710
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-74710 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74710 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 16, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/1bb30b181d9f0484e141f8411e15ed906d5c6780 Added Reference https://git.kernel.org/stable/c/21b8536aee819792f1b4b38b9aacf2a073025d49 Added Reference https://git.kernel.org/stable/c/642c6e73fce17fdca93a5793c4d22359fda866d7 Added Reference https://git.kernel.org/stable/c/cfb9d2976b277e554e28c165e3eff4b4a8ea10bd Removed Reference https://git.kernel.org/stable/c/1bb30b181d9f0484e141f8411e15ed906d5c6780 Removed Reference https://git.kernel.org/stable/c/21b8536aee819792f1b4b38b9aacf2a073025d49 Removed Reference https://git.kernel.org/stable/c/642c6e73fce17fdca93a5793c4d22359fda866d7 Removed Reference https://git.kernel.org/stable/c/cfb9d2976b277e554e28c165e3eff4b4a8ea10bd -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 16, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-74710', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-10-16T19:15:16.370467Z'} -
CVE Translated by [email protected]
Oct. 14, 2026
Action Type Old Value New Value Added Translation Title: Linux, Description: En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: xsk: requiere al menos 16 bytes de metadatos TX AF_XDP acepta una longitud de metadatos TX tan pequeña como ocho bytes, pero cada solicitud compatible necesita los flags más al menos un campo de solicitud de ocho bytes. Dichos metadatos cortos también permiten al kernel leer más allá del área registrada. Requerir 16 bytes en lugar de sizeof(struct xsk_tx_metadata) para preservar la compatibilidad con aplicaciones que no utilizan metadatos en tiempo de lanzamiento. -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 25, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 22, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '341ac980eab90ac1f6c22ee9f9da83ed9604d899', 'lessThan': '21b8536aee819792f1b4b38b9aacf2a073025d49', 'versionType': 'git'}, {'status': 'affected', 'version': '341ac980eab90ac1f6c22ee9f9da83ed9604d899', 'lessThan': '642c6e73fce17fdca93a5793c4d22359fda866d7', 'versionType': 'git'}, {'status': 'affected', 'version': '341ac980eab90ac1f6c22ee9f9da83ed9604d899', 'lessThan': 'cfb9d2976b277e554e28c165e3eff4b4a8ea10bd', 'versionType': 'git'}, {'status': 'affected', 'version': '341ac980eab90ac1f6c22ee9f9da83ed9604d899', 'lessThan': '1bb30b181d9f0484e141f8411e15ed906d5c6780', 'versionType': 'git'}], 'programFiles': ['net/xdp/xdp_umem.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.104', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.45', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.9', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/xdp/xdp_umem.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: xsk: require at least 16 bytes of TX metadata AF_XDP accepts a TX metadata length as small as eight bytes, but every supported request needs the flags plus at least one eight-byte request field. Such short metadata also lets the kernel read beyond the registered area. Require 16 bytes rather than sizeof(struct xsk_tx_metadata) to preserve compatibility with applications that do not use launch-time metadata. Added Reference https://git.kernel.org/stable/c/1bb30b181d9f0484e141f8411e15ed906d5c6780 Added Reference https://git.kernel.org/stable/c/21b8536aee819792f1b4b38b9aacf2a073025d49 Added Reference https://git.kernel.org/stable/c/642c6e73fce17fdca93a5793c4d22359fda866d7 Added Reference https://git.kernel.org/stable/c/cfb9d2976b277e554e28c165e3eff4b4a8ea10bd