SB2026082455 - Memory leak in Linux kernel smc

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Main Vulnerability Database SB2026082455

SB2026082455 - Memory leak in Linux kernel smc

Published: August 24, 2026

Security Bulletin ID SB2026082455
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Partial DoS

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Memory leak (CVE-ID: CVE-2026-74719)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to a memory leak in smc_llc_event_handler() when handling duplicate CONFIRM_LINK or ADD_LINK_CONT messages while a local LLC flow is active and a qentry is already pending. A remote attacker can send duplicate crafted messages to cause a denial of service.

The issue affects the SMC_LLC_CONFIRM_LINK and SMC_LLC_ADD_LINK_CONT handling path, while the response direction is not affected.


Remediation

Install update from vendor's website.

References