SB20260919111 - Memory leak in Linux kernel smc

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Main Vulnerability Database SB20260919111

SB20260919111 - Memory leak in Linux kernel smc

Published: September 19, 2026

Security Bulletin ID SB20260919111
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Memory leak (CVE-ID: CVE-2026-90108)

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

CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/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 memory leak.

The vulnerability exists due to improper memory management in smc_llc_event_handler() when handling an ADD_LINK request after a CONFIRM_LINK or ADD_LINK_CONT message has been stashed during the SMC_LLC_FLOW_REQ_ADD_LINK state. A remote attacker can send a sequence of LLC messages to cause a memory leak.

The overwritten stashed entry is a kmalloc allocation with no consumer in this flow state.


Remediation

Install update from vendor's website.

References