CVE-2026-43088None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: net: af_key: zero aligned sockaddr tail in PF_KEY exports PF_KEY export paths use `pfkey_sockaddr_size()` when reserving sockaddr payload space, so IPv6 addresses occu…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 14.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
0.1% → 0.1%
In the Linux kernel, the following vulnerability has been resolved:
net: af_key: zero aligned sockaddr tail in PF_KEY exports
PF_KEY export paths use pfkey_sockaddr_size() when reserving sockaddr
payload space, so IPv6 addresses occupy 32 bytes on the wire. However,
pfkey_sockaddr_fill() initializes only the first 28 bytes of
struct sockaddr_in6, leaving the final 4 aligned bytes uninitialized.
Not every PF_KEY message is affected. The state and policy dump builders
already zero the whole message buffer before filling the sockaddr
payloads. Keep the fix to the export paths that still append aligned
sockaddr payloads with plain skb_put():
SADB_ACQUIRESADB_X_NAT_T_NEW_MAPPINGSADB_X_MIGRATEFix those paths by clearing only the aligned sockaddr tail after
pfkey_sockaddr_fill().
Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6df5f90175fe4c584e9960b6c00131a7bf2b5399Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 746ee79d9e140f0e9e56f5123eaa88ad9332de7bLinux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e357c3cf8a44d4ec1f49ad6981e4ab9704354347Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3c19cb8a84ef709d57943bd6664cf31cb91ba6ecLinux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 11cbf294bac623bd57296f231199193087f57b4aLinux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < edd446ee7cd3d02cac246168063d5b3e9ea68460Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2e74f974359b5382ecbe8536abbb5b837eb6c724Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 426c355742f02cf743b347d9d7dbdc1bfbfa31efLinux 2.6.12Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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