CVE-2026-80714

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux26ec037f9841e49cc5c615deb8e1e73e5beab2ca < 06d1d9b56ef8132fbf85006885eb43d9510b8b02affected
LinuxLinux26ec037f9841e49cc5c615deb8e1e73e5beab2ca < acbdc276091b308ca7794acb86e761f8203e2f59affected
LinuxLinux26ec037f9841e49cc5c615deb8e1e73e5beab2ca < 300348e3ba1521b003d59825f97e24f9a6859688affected
LinuxLinux26ec037f9841e49cc5c615deb8e1e73e5beab2ca < 44af98cc7d5ef8e730488d5df1eecd5deeaa5947affected
LinuxLinux26ec037f9841e49cc5c615deb8e1e73e5beab2ca < 4649e6faeecdc2d44bfa6ccbe405eef27e55d816affected
LinuxLinux26ec037f9841e49cc5c615deb8e1e73e5beab2ca < b5ee5b266f833601ac4817f6df0bc496fc376a28affected
LinuxLinux26ec037f9841e49cc5c615deb8e1e73e5beab2ca < e7acfc990c29890c883d0d0ce3f737d003a43b44affected
LinuxLinux26ec037f9841e49cc5c615deb8e1e73e5beab2ca < a63d2dbaeb50a85d4c976b15a36e6b0c7113db5baffected
LinuxLinux2.6.36affected
LinuxLinux0 < 2.6.36unaffected
LinuxLinux5.10.265 <= 5.10.*unaffected
LinuxLinux5.15.216 <= 5.15.*unaffected
LinuxLinux6.1.183 <= 6.1.*unaffected
LinuxLinux6.6.151 <= 6.6.*unaffected
LinuxLinux6.12.103 <= 6.12.*unaffected
LinuxLinux6.18.44 <= 6.18.*unaffected
LinuxLinux7.1.8 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References