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Vulnerability record · CVE-2026-31631 · published 24 April 2026

CVE-2026-31631: Linux kernel out-of-bounds write vulnerability

Linux · Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix buffer overread in rxgk_do_verify_authenticator() Fix rxgk_do_verify_authenticator() to check the buffer size before checking the nonce.

8.2 CVSS 3.1 High EPSS 0.55% · top 56.2% CWE-787 · Out-of-bounds write
8.2CVSS 3.1 base score
0.55%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix buffer overread in rxgk_do_verify_authenticator() Fix rxgk_do_verify_authenticator() to check the buffer size before checking the nonce.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/1c4422d8be81718ecb15d79aedff607323085201 Patch
https://git.kernel.org/stable/c/794586789800b16dcbe235452494f4223ac80413 Patch
https://git.kernel.org/stable/c/f564af387c8c28238f8ebc13314c589d7ba8475d Patch

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Source: NIST National Vulnerability Database (record CVE-2026-31631), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.