CVE-2026-98078

medium

In the Linux kernel, the following vulnerability has been resolved: ipvs: fix reversed sequence option serialization hton_seq() expects the host-order source…

Vendor / product: Linux — linux kernel

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

4.4 (CVSS v3.1)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

Severity source: NVD CVSS v3.1 (nvd@nist.gov)

Timeline (UTC)

Published: 2026-09-25 11:17

Modified: 2026-10-19 10:18

NVD status: Analyzed

Last synced 2 days ago

Verified against the source API 2026-10-27 06:55 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

linux / linux_kernel ≥2.6.39 <6.12.111, ≥6.13 <6.18.53, ≥6.19 <7.2.7, 7.3

Weakness classification (CWE)

CWE-125

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Patch / mitigation: https://git.kernel.org/stable/c/524599714558da83747c04952d378155c69f5b6b

Patch / mitigation: https://git.kernel.org/stable/c/677ff8ab30a663cde984d8afe86465fd0d81aeef

Patch / mitigation: https://git.kernel.org/stable/c/ae38b2ae16f709c0193e1b4340bde26ef3e2687d

Patch / mitigation: https://git.kernel.org/stable/c/b04578b74f2d3755548fe9e829e3b2a6c6f966a1

Patch / mitigation: https://git.kernel.org/stable/c/bbc68ba258a4eb0a2ca3b3a105550801aa8b00b0

Patch / mitigation: https://git.kernel.org/stable/c/de6cc6ec7932bc530f2bb92005dac9123d50659c

Patch / mitigation: https://git.kernel.org/stable/c/e1c9f9446d3eaae323f1689f9e5de3b1ad6e47ec

Patch / mitigation: https://git.kernel.org/stable/c/f487b5788f15c6c32a219ed1480d25c93fc18d30

References

https://git.kernel.org/stable/c/524599714558da83747c04952d378155c69f5b6b 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/677ff8ab30a663cde984d8afe86465fd0d81aeef 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ae38b2ae16f709c0193e1b4340bde26ef3e2687d 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b04578b74f2d3755548fe9e829e3b2a6c6f966a1 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/bbc68ba258a4eb0a2ca3b3a105550801aa8b00b0 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/de6cc6ec7932bc530f2bb92005dac9123d50659c 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e1c9f9446d3eaae323f1689f9e5de3b1ad6e47ec 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f487b5788f15c6c32a219ed1480d25c93fc18d30 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 06:55 UTC · record ↗

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CVE-2026-98078

Affected products

Weakness classification (CWE)

Mitigation & advisories

References

Data sources

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