CVE-2026-74710

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/1bb30b181d9f0484e141f8411e15ed906d5c6780
https://git.kernel.org/stable/c/21b8536aee819792f1b4b38b9aacf2a073025d49
https://git.kernel.org/stable/c/642c6e73fce17fdca93a5793c4d22359fda866d7
https://git.kernel.org/stable/c/cfb9d2976b277e554e28c165e3eff4b4a8ea10bd

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-22 16:16

Updated : 2026-08-25 06:18

NVD link : CVE-2026-74710

Mitre link : CVE-2026-74710

CVE.ORG link : CVE-2026-74710

JSON object : View

Products Affected

No product.

CWE

No CWE.

{"id": "CVE-2026-74710", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"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"}]}], "published": "2026-08-22T16:16:45.743", "references": [{"url": "https://git.kernel.org/stable/c/1bb30b181d9f0484e141f8411e15ed906d5c6780", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/21b8536aee819792f1b4b38b9aacf2a073025d49", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/642c6e73fce17fdca93a5793c4d22359fda866d7", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/cfb9d2976b277e554e28c165e3eff4b4a8ea10bd", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Received", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxsk: require at least 16 bytes of TX metadata\n\nAF_XDP accepts a TX metadata length as small as eight bytes, but every\nsupported request needs the flags plus at least one eight-byte request\nfield. Such short metadata also lets the kernel read beyond the registered\narea.\n\nRequire 16 bytes rather than sizeof(struct xsk_tx_metadata) to preserve\ncompatibility with applications that do not use launch-time metadata."}], "lastModified": "2026-08-25T06:18:55.687", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}