CVE-2026-31633
CRITICALrxrpc: Fix integer overflow in rxgk_verify_response()
Title source: cnaDescription
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
0.0005
EPSS Percentile
16.4%
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 (11)
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
linux/linux_kernel
6.16
linux/linux_kernel
7.0 rc1 (7 CPE variants)
... and 1 more
Published
Apr 24, 2026
Tracked Since
Apr 24, 2026