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CVE-2026-80714

ipvs: do not propagate one-packet flag to synced conns

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.265, 5.15.216, 6.1.183, 6.6.151, 6.12.103, and 2 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: total

Summary

In the Linux kernel, the following vulnerability has been resolved: ipvs: do not propagate one-packet flag to synced conns Synced connections can be created before their destination exists. When the destination is later added, ip_vs_bind_dest() copies connection flags from the destination into cp->flags. IP_VS_CONN_F_ONE_PACKET connections are not synced. If a synced connection inherits IP_VS_CONN_F_ONE_PACKET while it is already hashed, expiry can treat it as a one-packet connection and skip unlinking the existing conn_tab node, leaving stale hash nodes pointing at a freed struct ip_vs_conn. Drop IP_VS_CONN_F_ONE_PACKET from destination flags when binding synced connections.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: total

  3. Record last updated

Affected versions

  • Linux Linux

    From 26ec037f9841e49cc5c615deb8e1e73e5beab2ca · fixed in 06d1d9b56ef8132fbf85006885eb43d9510b8b02; From 26ec037f9841e49cc5c615deb8e1e73e5beab2ca · fixed in acbdc276091b308ca7794acb86e761f8203e2f59; From 26ec037f9841e49cc5c615deb8e1e73e5beab2ca · fixed in 300348e3ba1521b003d59825f97e24f9a6859688; From 26ec037f9841e49cc5c615deb8e1e73e5beab2ca · fixed in 44af98cc7d5ef8e730488d5df1eecd5deeaa5947; From 26ec037f9841e49cc5c615deb8e1e73e5beab2ca · fixed in 4649e6faeecdc2d44bfa6ccbe405eef27e55d816; From 26ec037f9841e49cc5c615deb8e1e73e5beab2ca · fixed in b5ee5b266f833601ac4817f6df0bc496fc376a28; From 26ec037f9841e49cc5c615deb8e1e73e5beab2ca · fixed in e7acfc990c29890c883d0d0ce3f737d003a43b44; From 26ec037f9841e49cc5c615deb8e1e73e5beab2ca · fixed in a63d2dbaeb50a85d4c976b15a36e6b0c7113db5b

  • Linux Linux

    2.6.36

  • KernelLinux

    From 2.6.36 · fixed in 5.10.265; From 5.11.0 · fixed in 5.15.216; From 5.16.0 · fixed in 6.1.183; From 6.2.0 · fixed in 6.6.151; From 6.7.0 · fixed in 6.12.103; From 6.13.0 · fixed in 6.18.44; From 6.19.0 · fixed in 7.1.8

References 8

git.kernel.org