Is CVE-2026-31643 actively exploited?

CVE-2026-31643 has no public evidence of in-the-wild exploitation as of 2026-04-27.

What is the CVSS score for CVE-2026-31643?

CVE-2026-31643 has a CVSS score of 5.5 (MEDIUM severity). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

How do I patch CVE-2026-31643?

Patch guidance is available from linux security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-31643.

CVE-2026-31643 - remediation guidance & executive summary

Q: Which products are affected by CVE-2026-31643?

10 products: linux linux kernel, linux linux kernel, linux linux kernel, linux linux kernel, linux linux kernel, and 5 more.

Description

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix key parsing memleak In rxrpc_preparse_xdr_yfs_rxgk(), the memory attached to token->rxgk can be leaked in a few error paths after it's allocated. Fix this by freeing it in the "reject_token:" case.

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector: local
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-401

Metadata

Primary Vendor: LINUX
Published: 4/24/2026
Last Modified: 4/27/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

linux : linux_kernellinux : linux_kernellinux : linux_kernellinux : linux_kernellinux : linux_kernellinux : linux_kernellinux : linux_kernellinux : linux_kernellinux : linux_kernellinux : linux_kernel

Remediation Guidance

Executive Summary

View on NIST NVD