# CVE-2026-31633: linux: In the Linux kernel, the following vulnerability has been resolved:  rxrpc: Fix integer overflow in rxgk_verify_respo...

CVE-2026-31633 is fixed in linux on 1 platform by DEBIAN-CVE-2026-31633 (version 6.19.13-1), released May 15, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2026-31633
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0047
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 24, 2026

## 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).

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 6.19.13-1 | [DEBIAN-CVE-2026-31633](https://patchblox.com/security/data/fix/linux/debian-cve-2026-31633.md) | May 15, 2026 |

---

Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.