CVE-2026-98078

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux986a075795339c5ea1122ce9290dfd5504252eb0 < ae38b2ae16f709c0193e1b4340bde26ef3e2687daffected
LinuxLinux986a075795339c5ea1122ce9290dfd5504252eb0 < bbc68ba258a4eb0a2ca3b3a105550801aa8b00b0affected
LinuxLinux986a075795339c5ea1122ce9290dfd5504252eb0 < f487b5788f15c6c32a219ed1480d25c93fc18d30affected
LinuxLinux986a075795339c5ea1122ce9290dfd5504252eb0 < 677ff8ab30a663cde984d8afe86465fd0d81aeefaffected
LinuxLinux986a075795339c5ea1122ce9290dfd5504252eb0 < e1c9f9446d3eaae323f1689f9e5de3b1ad6e47ecaffected
LinuxLinux986a075795339c5ea1122ce9290dfd5504252eb0 < 524599714558da83747c04952d378155c69f5b6baffected
LinuxLinux986a075795339c5ea1122ce9290dfd5504252eb0 < de6cc6ec7932bc530f2bb92005dac9123d50659caffected
LinuxLinux986a075795339c5ea1122ce9290dfd5504252eb0 < b04578b74f2d3755548fe9e829e3b2a6c6f966a1affected
LinuxLinux2.6.39affected
LinuxLinux0 < 2.6.39unaffected
LinuxLinux5.10.271 <= 5.10.*unaffected
LinuxLinux5.15.222 <= 5.15.*unaffected
LinuxLinux6.1.189 <= 6.1.*unaffected
LinuxLinux6.6.158 <= 6.6.*unaffected
LinuxLinux6.12.111 <= 6.12.*unaffected
LinuxLinux6.18.53 <= 6.18.*unaffected
LinuxLinux7.2.7 <= 7.2.*unaffected
LinuxLinux7.3-rc3 <= *unaffected

Weaknesses

References