CVE-2026-80714

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

State: Published
Severity: 9.8 Critical
Published: Aug 28, 2026
Updated: Oct 16, 2026
Reserved: Aug 26, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	26ec037f9841e49cc5c615deb8e1e73e5beab2ca to before 06d1d9b56ef8132fbf85006885eb43d9510b8b02Affected 26ec037f9841e49cc5c615deb8e1e73e5beab2ca to before acbdc276091b308ca7794acb86e761f8203e2f59Affected 26ec037f9841e49cc5c615deb8e1e73e5beab2ca to before 300348e3ba1521b003d59825f97e24f9a6859688Affected 26ec037f9841e49cc5c615deb8e1e73e5beab2ca to before 44af98cc7d5ef8e730488d5df1eecd5deeaa5947Affected 26ec037f9841e49cc5c615deb8e1e73e5beab2ca to before 4649e6faeecdc2d44bfa6ccbe405eef27e55d816Affected 26ec037f9841e49cc5c615deb8e1e73e5beab2ca to before b5ee5b266f833601ac4817f6df0bc496fc376a28Affected 26ec037f9841e49cc5c615deb8e1e73e5beab2ca to before e7acfc990c29890c883d0d0ce3f737d003a43b44Affected 26ec037f9841e49cc5c615deb8e1e73e5beab2ca to before a63d2dbaeb50a85d4c976b15a36e6b0c7113db5bAffected
LinuxLinux	2.6.36Affected before 2.6.36Not affected 5.10.265 through 5.10.Not affected 5.15.216 through 5.15.Not affected 6.1.183 through 6.1.Not affected 6.6.151 through 6.6.Not affected 6.12.103 through 6.12.Not affected 6.18.44 through 6.18.Not affected 7.1.8 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

26ec037f9841e49cc5c615deb8e1e73e5beab2ca to before 06d1d9b56ef8132fbf85006885eb43d9510b8b02Affected
26ec037f9841e49cc5c615deb8e1e73e5beab2ca to before acbdc276091b308ca7794acb86e761f8203e2f59Affected
26ec037f9841e49cc5c615deb8e1e73e5beab2ca to before 300348e3ba1521b003d59825f97e24f9a6859688Affected
26ec037f9841e49cc5c615deb8e1e73e5beab2ca to before 44af98cc7d5ef8e730488d5df1eecd5deeaa5947Affected
26ec037f9841e49cc5c615deb8e1e73e5beab2ca to before 4649e6faeecdc2d44bfa6ccbe405eef27e55d816Affected
26ec037f9841e49cc5c615deb8e1e73e5beab2ca to before b5ee5b266f833601ac4817f6df0bc496fc376a28Affected
26ec037f9841e49cc5c615deb8e1e73e5beab2ca to before e7acfc990c29890c883d0d0ce3f737d003a43b44Affected
26ec037f9841e49cc5c615deb8e1e73e5beab2ca to before a63d2dbaeb50a85d4c976b15a36e6b0c7113db5bAffected

LinuxLinux

2.6.36Affected
before 2.6.36Not affected
5.10.265 through 5.10.*Not affected
5.15.216 through 5.15.*Not affected
6.1.183 through 6.1.*Not affected
6.6.151 through 6.6.*Not affected
6.12.103 through 6.12.*Not affected
6.18.44 through 6.18.*Not affected
7.1.8 through 7.1.*Not affected
7.2 and laterNot affected

References

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