GHSA-v6vr-f94r-r434MediumCVSS 5.5
In the Linux kernel, the following vulnerability has been resolved: xfrm: account XFRMA_IF_ID in...
🔗 CVE IDs covered (1)
📋 Description
In the Linux kernel, the following vulnerability has been resolved:
xfrm: account XFRMA_IF_ID in aevent size calculation
xfrm_get_ae() allocates the reply skb with xfrm_aevent_msgsize(), then build_aevent() appends attributes including XFRMA_IF_ID when x->if_id is set.
xfrm_aevent_msgsize() does not include space for XFRMA_IF_ID. For states with if_id, build_aevent() can fail with -EMSGSIZE and hit BUG_ON(err < 0) in xfrm_get_ae(), turning a malformed netlink interaction into a kernel panic.
Account XFRMA_IF_ID in the size calculation unconditionally and replace the BUG_ON with normal error unwinding.
🔗 References (8)
- https://nvd.nist.gov/vuln/detail/CVE-2026-43107
- https://git.kernel.org/stable/c/2c41283d94af943a05f7f2cc1a01f0c872f3cf43
- https://git.kernel.org/stable/c/58e5735d1a5373652f405a0c16e54ac04aaab0ad
- https://git.kernel.org/stable/c/7081d46d32312f1a31f0e0e99c6835a394037599
- https://git.kernel.org/stable/c/e62e322ea20be78e346e4b49f9a6b9f03313af4c
- https://git.kernel.org/stable/c/f8f3bb89ab677db15f9f5250c77af728f9afe995
- https://git.kernel.org/stable/c/b7dbdc34d22f743abb2c460dfae0d69cd8a45e69
- https://github.com/advisories/GHSA-v6vr-f94r-r434