CVE-2026-80601

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

State: Published
Severity: 8.8 High
Published: Aug 28, 2026
Updated: Oct 16, 2026
Reserved: Aug 26, 2026

Description

In 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.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 to before 2760b38222c8828b075802342fe3b91eb823d542Affected 6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 to before 6c37f1166549c999ccd164b0cb6462d1ae68f8f6Affected 6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 to before b79884a5567bf788fb76c30832467cf6a56f3c0dAffected 6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 to before afac8096bde4948e3caa7e4dd733867cfbd3018eAffected 6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 to before e3f4325e35dd6e76b80665f3510738ce34819753Affected 6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 to before e6b43acd34b219b807e65096ce207b087942779dAffected 6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 to before 916dac5f2944f63f07f7b501acbea6737dbbed0eAffected 6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 to before 77880a3be88d378d60cc1e8f8ec70430e2ed0518Affected
LinuxLinux	3.14Affected before 3.14Not affected 5.10.261 through 5.10.Not affected 5.15.212 through 5.15.Not affected 6.1.178 through 6.1.Not affected 6.6.145 through 6.6.Not affected 6.12.97 through 6.12.Not affected 6.18.40 through 6.18.Not affected 7.1.5 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 to before 2760b38222c8828b075802342fe3b91eb823d542Affected
6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 to before 6c37f1166549c999ccd164b0cb6462d1ae68f8f6Affected
6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 to before b79884a5567bf788fb76c30832467cf6a56f3c0dAffected
6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 to before afac8096bde4948e3caa7e4dd733867cfbd3018eAffected
6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 to before e3f4325e35dd6e76b80665f3510738ce34819753Affected
6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 to before e6b43acd34b219b807e65096ce207b087942779dAffected
6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 to before 916dac5f2944f63f07f7b501acbea6737dbbed0eAffected
6c413b1c22a2c4ef324f1c6f2c282f1ca10a93b9 to before 77880a3be88d378d60cc1e8f8ec70430e2ed0518Affected

LinuxLinux

3.14Affected
before 3.14Not affected
5.10.261 through 5.10.*Not affected
5.15.212 through 5.15.*Not affected
6.1.178 through 6.1.*Not affected
6.6.145 through 6.6.*Not affected
6.12.97 through 6.12.*Not affected
6.18.40 through 6.18.*Not affected
7.1.5 through 7.1.*Not affected
7.2 and laterNot affected

References

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