CVE-2026-80599 PUBLISHED

batman-adv: dat: ensure accessible eth_hdr proto field

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: ensure accessible eth_hdr proto field

When batadv_get_vid() accesses the proto field of the ethernet header, it is not checking if the data itself is accessible. The caller is responsible for it. But in contrast to other call sites, batadv_dat_get_vid() and its caller didn't make sure this is true. This could have caused an out-of-bounds access.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from be1db4f6615b5e6156c807ea8985171c215c2d57 to da3677b5ed362742d30ceab31bfafcdc74dc2642 (excl.)
  • affected from be1db4f6615b5e6156c807ea8985171c215c2d57 to 6d3ea37074bb747f745d28138f87745ba9bd97c5 (excl.)
  • affected from be1db4f6615b5e6156c807ea8985171c215c2d57 to 7913935d41f166c367bbf7cc76a79e50044388e8 (excl.)
  • affected from be1db4f6615b5e6156c807ea8985171c215c2d57 to 3c62694c31f043568c3f4784b8d247cc3bea6b4c (excl.)
  • affected from be1db4f6615b5e6156c807ea8985171c215c2d57 to 5836a050d02e9598fa0f71e88dde28b63dfa35e3 (excl.)
  • affected from be1db4f6615b5e6156c807ea8985171c215c2d57 to 8f76277d02176cd739945bba3379448e2e22e799 (excl.)
  • affected from be1db4f6615b5e6156c807ea8985171c215c2d57 to 4407ff3af469356f9641c4a6e7072309bae86bea (excl.)
  • affected from be1db4f6615b5e6156c807ea8985171c215c2d57 to 26560c4a03dc4d607331600c187f59ab2df5f341 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 3.13 is affected
  • unaffected from 0 to 3.13 (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