CVE-2026-31633
Critical
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).
SeverityCritical
CVSS9.8
Exploit probability—
Product
Linux Kernel
PublishedApr 24, 2026
First seenApr 24, 2026
Weakness typeCWE-190Integer overflow
How to fix
Update
- linux linux_kernel6.18.23, 6.19.13 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.16.1 ≤ v < 6.18.23, 6.19 ≤ v < 6.19.13, 6.16, 7.0 | 6.18.23, 6.19.13 |
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