Resource exhaustion in Linux kernel - CVE-2026-31677

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Main Vulnerability Database Vulnerabilities #VU127870

Resource exhaustion in Linux kernel - CVE-2026-31677

Published: April 25, 2026


Vulnerability identifier: #VU127870
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-31677
CWE-ID: CWE-400
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Linux kernel
Software vendor:
Linux Foundation

Description

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper resource management in af_alg_get_rsgl() when processing recvmsg calls with data extraction into the RX scatterlist. A local user can send a specially crafted recvmsg request to cause a denial of service.


Remediation

Install security update from vendor's repository.

External links