CVE-2026-31633

CRITICAL

rxrpc: Fix integer overflow in rxgk_verify_response()

Title source: cna
STIX 2.1

Description

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).

Scores

CVSS v3 9.8
EPSS 0.0047
EPSS Percentile 38.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-190
Status published
Products (13)
linux/Kernel 6.16.0 - 6.18.23linux
linux/Kernel 6.19.0 - 6.19.13linux
Linux/Linux < 6.16
Linux/Linux 6.16
Linux/Linux 6.18.23 - 6.18.*
Linux/Linux 6.19.13 - 6.19.*
Linux/Linux 7.0
Linux/Linux 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a - 1f864d9daaf622aeaa774404fd51e7d6a435b046
Linux/Linux 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a - 699e52180f4231c257821c037ed5c99d5eb0edb8
Linux/Linux 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a - c1e242beb6b1efc3c286f617e8d940c8fbf2ed41
... and 3 more
Published Apr 24, 2026
Tracked Since Apr 24, 2026