CVE-2026-43107
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2026-05-06
Modified: 2026-10-30
First seen: 2026-10-30
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
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.
Weakness Classification (1)
Affected Software (15)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 7e6526404adedf079279aa7aa11722deaca8fe2e < b7dbdc34d22f743abb2c460dfae0d69cd8a45e69 |
| Linux | Linux | 7e6526404adedf079279aa7aa11722deaca8fe2e < f8f3bb89ab677db15f9f5250c77af728f9afe995 |
| Linux | Linux | 7e6526404adedf079279aa7aa11722deaca8fe2e < 2c41283d94af943a05f7f2cc1a01f0c872f3cf43 |
| Linux | Linux | 7e6526404adedf079279aa7aa11722deaca8fe2e < e62e322ea20be78e346e4b49f9a6b9f03313af4c |
| Linux | Linux | 7e6526404adedf079279aa7aa11722deaca8fe2e < 58e5735d1a5373652f405a0c16e54ac04aaab0ad |
| Linux | Linux | 7e6526404adedf079279aa7aa11722deaca8fe2e < 7081d46d32312f1a31f0e0e99c6835a394037599 |
| Linux | Linux | 4.19 |
| linux | linux_kernel | 4.19 – 6.12.83 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |