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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-31683

batman-adv: avoid OGM aggregation when skb tailroom is insufficient

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • c6c8fea29769d998d94fcec9b9f14d4b52b349d3 to < 67176c96f325837b0bb3e9538ca2eba414f447d8affected
  • c6c8fea29769d998d94fcec9b9f14d4b52b349d3 to < 0b10a8b355c3f71012ce89289ec2c2f5e3bfd6c1affected
  • c6c8fea29769d998d94fcec9b9f14d4b52b349d3 to < 6755347c5f9bdd44dee80f692208b056fcd40a52affected
  • c6c8fea29769d998d94fcec9b9f14d4b52b349d3 to < 1ada20331f2df2a942d6b83ae1f04a304b642e2aaffected
  • c6c8fea29769d998d94fcec9b9f14d4b52b349d3 to < 6e40ebb999c2c3d2fbb3cacb61f0384ee6e69075affected
  • c6c8fea29769d998d94fcec9b9f14d4b52b349d3 to < 0e35db29fc5a97a8553f7c2d3a2ba730e46b1ee8affected
  • c6c8fea29769d998d94fcec9b9f14d4b52b349d3 to < eda89a1bae0602aec8314ced299bb243b9f9aeefaffected
  • c6c8fea29769d998d94fcec9b9f14d4b52b349d3 to < 0d4aef630be9d5f9c1227d07669c26c4383b5ad0affected

Linux Linux

Default version status: affected

  • 2.6.38affected
  • 0 to < 2.6.38unaffected
  • 5.10.253 to ≤ 5.10.*unaffected
  • 5.15.203 to ≤ 5.15.*unaffected
  • 6.1.167 to ≤ 6.1.*unaffected
  • 6.6.130 to ≤ 6.6.*unaffected
  • 6.12.78 to ≤ 6.12.*unaffected
  • 6.18.20 to ≤ 6.18.*unaffected
  • 6.19.10 to ≤ 6.19.*unaffected
  • 7.0 to ≤ *unaffected

References