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CVE

CVE-2026-72234

batman-adv: access unicast_ttvn skb->data only after skb realloc
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CVE

CVE-2026-72234

batman-adv: access unicast_ttvn skb->data only after skb realloc

In the Linux kernel, the following vulnerability has been resolved:

batman-adv: access unicast_ttvn skb->data only after skb realloc

The pskbmaypull() called by batadvgetvid() 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.

This was done correctly for the ethernet header but missed for the

unicast_packet pointer.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://git.kernel.org/stable/c/7141990add3f75436f2933cb310654cad3b1e3e9, https://git.kernel.org/stable/c/7b162b36de750565404cd3b98315706622c6974f, https://git.kernel.org/stable/c/979175834a699ccc3c4c0b0ba60ecae0f135a587, https://git.kernel.org/stable/c/9a7b7248798123efbd5fafe58461d57c7cc718af, https://git.kernel.org/stable/c/9c2c05629e46c1fd43931506d41c56a885a98eb4, https://git.kernel.org/stable/c/aa9558af859934f24717d4bab97d61004f91a736, https://git.kernel.org/stable/c/b8afcf799b2cc92c41beebd029e53ed18960184a, https://git.kernel.org/stable/c/ed90eb5c68420cdfe67ec1f773324198d2ef6f50, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72234.json, https://nvd.nist.gov/vuln/detail/CVE-2026-72234, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Severity

9.8

CVSS Score
0
10

Basic Information

Base CVSS
9.8
EPSS Probability
0.00675%
EPSS Percentile
0.49556%
Introduced Version
c018ad3de61a1dc4194879a53e5559e094aa7b1a,3.13.0,5.11.0,5.16.0,6.2.0,6.7.0,6.13.0,6.19.0,0
Fix Available
7141990add3f75436f2933cb310654cad3b1e3e9,5.10.261,5.15.212,6.1.178,6.6.145,6.12.97,6.18.40,7.1.5,6.1.180-1,5.10.262-1,6.12.100-1

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