CVE-2026-98078ipvs: fix reversed sequence option serialization
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 4.4 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 986a075795339c5ea1122ce9290dfd5504252eb0 before ae38b2ae16f709c0193e1b4340bde26ef3e2687d; from 986a075795339c5ea1122ce9290dfd5504252eb0 before bbc68ba258a4eb0a2ca3b3a105550801aa8b00b0; from 986a075795339c5ea1122ce9290dfd5504252eb0 before f487b5788f15c6c32a219ed1480d25c93fc18d30; 986a075795339c5ea1122ce9290dfd5504252eb0 builds before 677ff8ab30a663cde984d8afe86465fd0d81aeef; from 986a075795339c5ea1122ce9290dfd5504252eb0 before e1c9f9446d3eaae323f1689f9e5de3b1ad6e47ec; from 986a075795339c5ea1122ce9290dfd5504252eb0 before 524599714558da83747c04952d378155c69f5b6b; from 986a075795339c5ea1122ce9290dfd5504252eb0 before de6cc6ec7932bc530f2bb92005dac9123d50659c; from 986a075795339c5ea1122ce9290dfd5504252eb0 before b04578b74f2d3755548fe9e829e3b2a6c6f966a1 | CNA record |
linux linux_kernel linux:linux_kernel | from 2.6.39 before 6.12.111; from 6.13 before 6.18.53; from 6.19 before 7.2.7; 7.3; 7.3 | NVD |
References
- https://git.kernel.org/stable/c/ae38b2ae16f709c0193e1b4340bde26ef3e2687dpatch
- https://git.kernel.org/stable/c/bbc68ba258a4eb0a2ca3b3a105550801aa8b00b0patch
- https://git.kernel.org/stable/c/f487b5788f15c6c32a219ed1480d25c93fc18d30patch
- https://git.kernel.org/stable/c/677ff8ab30a663cde984d8afe86465fd0d81aeefpatch
- https://git.kernel.org/stable/c/e1c9f9446d3eaae323f1689f9e5de3b1ad6e47ecpatch
- https://git.kernel.org/stable/c/524599714558da83747c04952d378155c69f5b6bpatch
- https://git.kernel.org/stable/c/de6cc6ec7932bc530f2bb92005dac9123d50659cpatch
- https://git.kernel.org/stable/c/b04578b74f2d3755548fe9e829e3b2a6c6f966a1patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.