batman-adv: gw: acquire ethernet header only after skb realloc

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-80601
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-28 08:16:43 UTC
Updated2026-08-29 07:16:45 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: batman-adv: gw: acquire ethernet header only after skb realloc The pskb_may_pull() called by batadv_get_vid() could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an use-after-free.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001760000 probability, percentile 0.072350000 (date 2026-08-28)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary8.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 2760b38222c8828b075802342fe3b91eb823d542 git Not specified
CNA Linux Linux affected 6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 6c37f1166549c999ccd164b0cb6462d1ae68f8f6 git Not specified
CNA Linux Linux affected 6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 b79884a5567bf788fb76c30832467cf6a56f3c0d git Not specified
CNA Linux Linux affected 6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 afac8096bde4948e3caa7e4dd733867cfbd3018e git Not specified
CNA Linux Linux affected 6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 e3f4325e35dd6e76b80665f3510738ce34819753 git Not specified
CNA Linux Linux affected 6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 e6b43acd34b219b807e65096ce207b087942779d git Not specified
CNA Linux Linux affected 6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 916dac5f2944f63f07f7b501acbea6737dbbed0e git Not specified
CNA Linux Linux affected 6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 77880a3be88d378d60cc1e8f8ec70430e2ed0518 git Not specified
CNA Linux Linux affected 3.14 Not specified
CNA Linux Linux unaffected 3.14 semver Not specified
CNA Linux Linux unaffected 5.10.261 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.212 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.178 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.145 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.97 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.40 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/b79884a5567bf788fb76c30832467cf6a56f3c0d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/afac8096bde4948e3caa7e4dd733867cfbd3018e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/916dac5f2944f63f07f7b501acbea6737dbbed0e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6c37f1166549c999ccd164b0cb6462d1ae68f8f6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2760b38222c8828b075802342fe3b91eb823d542 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e6b43acd34b219b807e65096ce207b087942779d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/77880a3be88d378d60cc1e8f8ec70430e2ed0518 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e3f4325e35dd6e76b80665f3510738ce34819753 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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