CVE-2026-31633

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-31633

Key Details

CVE	CVE-2026-31633
CVSS Score / Version	9.8 (Critical) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel
Classified as	CWE-190 (Integer Overflow or Wraparound)

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

rxrpc: Fix integer overflow in rxgk_verify_response()

In rxgk_verify_response(), there's a potential integer overflow due to

rounding up token_len before checking it, thereby allowing the length check to

be bypassed.

Fix this by checking the unrounded value against len too (len is limited as

the response must fit in a single UDP packet). (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-31633
CVE	https://www.cve.org/CVERecord?id=CVE-2026-31633

Source

Reference

NVD

CVE