CVE-2026-98078ipvs: fix reversed sequence option serialization
- 4.4MediumCVSS base score
- 0.15%Exploitation in 30 daysEPSS · top 95% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
Published
- 24 days later
· 24 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium4.4 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L |
- EPSS (exploitation in 30 days)
- 0.15% · top 95% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.4.
Affected products
- affected 986a075795339c5ea1122ce9290dfd5504252eb0 – < ae38b2ae16f709c0193e1b4340bde26ef3e2687d
- affected 986a075795339c5ea1122ce9290dfd5504252eb0 – < bbc68ba258a4eb0a2ca3b3a105550801aa8b00b0
- affected 986a075795339c5ea1122ce9290dfd5504252eb0 – < f487b5788f15c6c32a219ed1480d25c93fc18d30
- affected 986a075795339c5ea1122ce9290dfd5504252eb0 – < 677ff8ab30a663cde984d8afe86465fd0d81aeef
- affected 986a075795339c5ea1122ce9290dfd5504252eb0 – < e1c9f9446d3eaae323f1689f9e5de3b1ad6e47ec
- affected 986a075795339c5ea1122ce9290dfd5504252eb0 – < 524599714558da83747c04952d378155c69f5b6b
- affected 986a075795339c5ea1122ce9290dfd5504252eb0 – < de6cc6ec7932bc530f2bb92005dac9123d50659c
- affected 986a075795339c5ea1122ce9290dfd5504252eb0 – < b04578b74f2d3755548fe9e829e3b2a6c6f966a1
- affected 2.6.39
- unaffected < 2.6.39
- unaffected 5.10.271 – ≤ 5.10.*
- unaffected 5.15.222 – ≤ 5.15.*
- unaffected 6.1.189 – ≤ 6.1.*
- unaffected 6.6.158 – ≤ 6.6.*
- unaffected 6.12.111 – ≤ 6.12.*
- unaffected 6.18.53 – ≤ 6.18.*
- unaffected 7.2.7 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/ae38b2ae16f709c0193e1b4340bde26ef3e2687d (opens in a new tab)
- https://git.kernel.org/stable/c/bbc68ba258a4eb0a2ca3b3a105550801aa8b00b0 (opens in a new tab)
- https://git.kernel.org/stable/c/f487b5788f15c6c32a219ed1480d25c93fc18d30 (opens in a new tab)
- https://git.kernel.org/stable/c/677ff8ab30a663cde984d8afe86465fd0d81aeef (opens in a new tab)
- https://git.kernel.org/stable/c/e1c9f9446d3eaae323f1689f9e5de3b1ad6e47ec (opens in a new tab)
- https://git.kernel.org/stable/c/524599714558da83747c04952d378155c69f5b6b (opens in a new tab)
- https://git.kernel.org/stable/c/de6cc6ec7932bc530f2bb92005dac9123d50659c (opens in a new tab)
- https://git.kernel.org/stable/c/b04578b74f2d3755548fe9e829e3b2a6c6f966a1 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-86908 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-98078)Record last updated .