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Findings

CVE-2026-43088

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 when reserving so…

Published May 6, 2026 · updated Sep 14, 2026 · linux linux kernel

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 when reserving sockaddr payload space, so IPv6 addresses occupy 32 bytes on the wire. However, initializes only the first 28 bytes of , 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 : - - - Fix those paths by clearing only the aligned sockaddr tail after .

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 6, 2026 · NIST NVD

    Detected

    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 when reserving sockaddr payload space, so IPv6 addresses occupy 32 bytes on the wire. However, initializes only the first 28 bytes of , leaving the final 4 aligned bytes uninitialized. Not every PF_KEY message is affected. The state and policy dump b

  2. Sep 14, 2026 · NIST NVD

    Updated

    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 when reserving sockaddr payload space, so IPv6 addresses occupy 32 bytes on the wire. However, initializes only the first 28 bytes of , leaving the final 4 aligned bytes uninitialized. Not every PF_KEY message is affected. The state and policy dump b

Affected

  • cpe linux/linux kernelversion unspecified
  • cpe linux/linux kernel2.6.12

Sources

  • CVE.orgVulnerability recordCVE-2026-43088

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2026-43088

    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 when reserving sockaddr payload space, so IPv6 addresses occupy 32 bytes on the wire. However, `pfkey_so

    nvd.nist.gov

References