CVE-2026-31683
batman-adv: avoid OGM aggregation when skb tailroom is insufficient
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
In the Linux kernel, the following vulnerability has been resolved: batman-adv: avoid OGM aggregation when skb tailroom is insufficient When OGM aggregation state is toggled at runtime, an existing forwarded packet may have been allocated with only packet_len bytes, while a later packet can still be selected for aggregation. Appending in this case can hit skb_put overflow conditions. Reject aggregation when the target skb tailroom cannot accommodate the new packet. The caller then falls back to creating a new forward packet instead of appending.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.38
References 8
git.kernel.org
- stable/c/67176c96f325837b0bb3e9538ca2eba414f447d8
- stable/c/0b10a8b355c3f71012ce89289ec2c2f5e3bfd6c1
- stable/c/6755347c5f9bdd44dee80f692208b056fcd40a52
- stable/c/1ada20331f2df2a942d6b83ae1f04a304b642e2a
- stable/c/6e40ebb999c2c3d2fbb3cacb61f0384ee6e69075
- stable/c/0e35db29fc5a97a8553f7c2d3a2ba730e46b1ee8
- stable/c/eda89a1bae0602aec8314ced299bb243b9f9aeef
- stable/c/0d4aef630be9d5f9c1227d07669c26c4383b5ad0