CVE-2026-31417

net/x25: Fix overflow when accumulating packets

CVE-2026-31417 is fixed in 11 products on 1 platform, first by DEBIAN-CVE-2026-31417, released April 13, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

8.1

Important

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0045

39th percentile

In the Linux kernel, the following vulnerability has been resolved: net/x25: Fix overflow when accumulating packets Add a check to ensure that `x25_sock.fraglen` does not overflow. The `fraglen` also needs to be resetted when purging `fragment_queue` in `x25_clear_queues()`.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
kernel-64kb · sles 15.7	6.4.0-150700.53.55.1	SUSE-SU-2026:2238-1	Jun 30, 2026
kernel-azure · sles 15.7	6.4.0-150700.53.55.1	SUSE-SU-2026:2238-1	Jun 30, 2026
kernel-default · sles 15.7	6.4.0-150700.53.55.1	SUSE-SU-2026:2238-1	Jun 30, 2026
kernel-default-base · sles 15.7	6.4.0-150700.53.55.1.150700.17.33.1	SUSE-SU-2026:2238-1	Jun 30, 2026
kernel-docs · sles 15.7	6.4.0-150700.53.55.1	SUSE-SU-2026:2238-1	Jun 30, 2026
kernel-livepatch-SLE15-SP7_Update_15 · sles 15.7	1-150700.15.3.1	SUSE-SU-2026:2238-1	Jun 30, 2026
kernel-obs-build · sles 15.7	6.4.0-150700.53.55.1	SUSE-SU-2026:2238-1	Jun 30, 2026
kernel-source · sles 15.7	6.4.0-150700.53.55.1	SUSE-SU-2026:2238-1	Jun 30, 2026
kernel-syms · sles 15.7	6.4.0-150700.53.55.1	SUSE-SU-2026:2238-1	Jun 30, 2026
kernel-zfcpdump · sles 15.7	6.4.0-150700.53.55.1	SUSE-SU-2026:2238-1	Jun 30, 2026
linux · Debian 12.15 (bookworm)	6.1.170-1	DEBIAN-CVE-2026-31417	Apr 13, 2026
linux · Debian 13.5 (trixie)	6.12.85-1	DEBIAN-CVE-2026-31417	Apr 13, 2026
linux · Debian 14	6.19.12-1	DEBIAN-CVE-2026-31417	Apr 13, 2026

Details

Published
April 13, 2026
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-31417

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