CVE-2026-43107None▾ SunlitIn 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…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 21.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
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.
Linux >= 7e6526404adedf079279aa7aa11722deaca8fe2e < f8f3bb89ab677db15f9f5250c77af728f9afe995Linux >= 7e6526404adedf079279aa7aa11722deaca8fe2e < 2c41283d94af943a05f7f2cc1a01f0c872f3cf43Linux >= 7e6526404adedf079279aa7aa11722deaca8fe2e < e62e322ea20be78e346e4b49f9a6b9f03313af4cLinux >= 7e6526404adedf079279aa7aa11722deaca8fe2e < 58e5735d1a5373652f405a0c16e54ac04aaab0adLinux >= 7e6526404adedf079279aa7aa11722deaca8fe2e < 7081d46d32312f1a31f0e0e99c6835a394037599Linux 4.19Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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