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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-43107

xfrm: account XFRMA_IF_ID in aevent size calculation

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Status
Published
Published
Updated
Assigning organization
Linux

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.

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

  • 7e6526404adedf079279aa7aa11722deaca8fe2e to < b7dbdc34d22f743abb2c460dfae0d69cd8a45e69affected
  • 7e6526404adedf079279aa7aa11722deaca8fe2e to < f8f3bb89ab677db15f9f5250c77af728f9afe995affected
  • 7e6526404adedf079279aa7aa11722deaca8fe2e to < 2c41283d94af943a05f7f2cc1a01f0c872f3cf43affected
  • 7e6526404adedf079279aa7aa11722deaca8fe2e to < e62e322ea20be78e346e4b49f9a6b9f03313af4caffected
  • 7e6526404adedf079279aa7aa11722deaca8fe2e to < 58e5735d1a5373652f405a0c16e54ac04aaab0adaffected
  • 7e6526404adedf079279aa7aa11722deaca8fe2e to < 7081d46d32312f1a31f0e0e99c6835a394037599affected

Linux Linux

Default version status: affected

  • 4.19affected
  • 0 to < 4.19unaffected
  • 6.1.191 to ≤ 6.1.*unaffected
  • 6.6.160 to ≤ 6.6.*unaffected
  • 6.12.83 to ≤ 6.12.*unaffected
  • 6.18.24 to ≤ 6.18.*unaffected
  • 6.19.14 to ≤ 6.19.*unaffected
  • 7.0 to ≤ *unaffected

References