CVE-2026-80600 PUBLISHED

batman-adv: dat: acquire ARP hw source only after skb realloc

Assigner: Linux
Reserved: 26.08.2026 Published: 28.08.2026 Updated: 28.08.2026

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

batman-adv: dat: acquire ARP hw source 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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from b61ec31c85756bbc898fb892555509afe709459a to a82fc217cb7a447313c76ebf9f09b100771b0ddf (excl.)
  • affected from b61ec31c85756bbc898fb892555509afe709459a to 86aa79b43e5b561fd3648891165bd7313b541315 (excl.)
  • affected from b61ec31c85756bbc898fb892555509afe709459a to d755cd001fa2c248e186c1fc3df3d11d97dc843c (excl.)
  • affected from b61ec31c85756bbc898fb892555509afe709459a to 3404be97b940a9b1ae1aea5fdbc6cdbbe9cd5146 (excl.)
  • affected from b61ec31c85756bbc898fb892555509afe709459a to 01678c53a7717a748aee388b6839e7b9761d641c (excl.)
  • affected from b61ec31c85756bbc898fb892555509afe709459a to 3b4c70c40f2e135a50cd38fc61c7d23a296a9981 (excl.)
  • affected from b61ec31c85756bbc898fb892555509afe709459a to 059a70e1d12d6d99310e0599d37b0323557569a8 (excl.)
  • affected from b61ec31c85756bbc898fb892555509afe709459a to 48067b2ae4504500a7093d9e1e16b42e70330480 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 5.1 is affected
  • unaffected from 0 to 5.1 (excl.)
  • unaffected from 5.10.261 to 5.10.* (incl.)
  • unaffected from 5.15.212 to 5.15.* (incl.)
  • unaffected from 6.1.178 to 6.1.* (incl.)
  • unaffected from 6.6.145 to 6.6.* (incl.)
  • unaffected from 6.12.97 to 6.12.* (incl.)
  • unaffected from 6.18.40 to 6.18.* (incl.)
  • unaffected from 7.1.5 to 7.1.* (incl.)
  • unaffected from 7.2 to * (incl.)

References