CVE-2026-98078

ipvs: fix reversed sequence option serialization

State: Published
Severity: Not scored
Published: Sep 25, 2026
Updated: Oct 19, 2026
Reserved: Sep 25, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

ipvs: fix reversed sequence option serialization

hton_seq() expects the host-order source first and the unaligned network-order destination second. The version 1 sync sender passes these arguments in reverse for both sequence blocks. This leaves 24 bytes of the kmalloc-backed message unwritten. It may disclose stale heap data and replace the live connection sequence state with values read from the buffer.

Pass the connection sequence state as the source and the message payload as the destination for both blocks.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	986a075795339c5ea1122ce9290dfd5504252eb0 to before ae38b2ae16f709c0193e1b4340bde26ef3e2687dAffected 986a075795339c5ea1122ce9290dfd5504252eb0 to before bbc68ba258a4eb0a2ca3b3a105550801aa8b00b0Affected 986a075795339c5ea1122ce9290dfd5504252eb0 to before f487b5788f15c6c32a219ed1480d25c93fc18d30Affected 986a075795339c5ea1122ce9290dfd5504252eb0 to before 677ff8ab30a663cde984d8afe86465fd0d81aeefAffected 986a075795339c5ea1122ce9290dfd5504252eb0 to before e1c9f9446d3eaae323f1689f9e5de3b1ad6e47ecAffected 986a075795339c5ea1122ce9290dfd5504252eb0 to before 524599714558da83747c04952d378155c69f5b6bAffected 986a075795339c5ea1122ce9290dfd5504252eb0 to before de6cc6ec7932bc530f2bb92005dac9123d50659cAffected 986a075795339c5ea1122ce9290dfd5504252eb0 to before b04578b74f2d3755548fe9e829e3b2a6c6f966a1Affected
LinuxLinux	2.6.39Affected before 2.6.39Not affected 5.10.271 through 5.10.Not affected 5.15.222 through 5.15.Not affected 6.1.189 through 6.1.Not affected 6.6.158 through 6.6.Not affected 6.12.111 through 6.12.Not affected 6.18.53 through 6.18.Not affected 7.2.7 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

986a075795339c5ea1122ce9290dfd5504252eb0 to before ae38b2ae16f709c0193e1b4340bde26ef3e2687dAffected
986a075795339c5ea1122ce9290dfd5504252eb0 to before bbc68ba258a4eb0a2ca3b3a105550801aa8b00b0Affected
986a075795339c5ea1122ce9290dfd5504252eb0 to before f487b5788f15c6c32a219ed1480d25c93fc18d30Affected
986a075795339c5ea1122ce9290dfd5504252eb0 to before 677ff8ab30a663cde984d8afe86465fd0d81aeefAffected
986a075795339c5ea1122ce9290dfd5504252eb0 to before e1c9f9446d3eaae323f1689f9e5de3b1ad6e47ecAffected
986a075795339c5ea1122ce9290dfd5504252eb0 to before 524599714558da83747c04952d378155c69f5b6bAffected
986a075795339c5ea1122ce9290dfd5504252eb0 to before de6cc6ec7932bc530f2bb92005dac9123d50659cAffected
986a075795339c5ea1122ce9290dfd5504252eb0 to before b04578b74f2d3755548fe9e829e3b2a6c6f966a1Affected

LinuxLinux

2.6.39Affected
before 2.6.39Not affected
5.10.271 through 5.10.*Not affected
5.15.222 through 5.15.*Not affected
6.1.189 through 6.1.*Not affected
6.6.158 through 6.6.*Not affected
6.12.111 through 6.12.*Not affected
6.18.53 through 6.18.*Not affected
7.2.7 through 7.2.*Not affected
7.3 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.