SB20261023134 - Memory leak in Linux kernel power sequencing driver

Description

This security bulletin contains information about 1 vulnerability.

1) Memory leak (CVE-ID: CVE-2026-99023)

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

CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to cause a memory leak that may lead to a denial of service through kernel memory exhaustion.

The vulnerability exists due to failure to release an allocated regulator consumers array in drivers/power/sequencing/pwrseq-pcie-m2.c when handling probe error cleanup or device removal. A local privileged user can trigger these cleanup paths repeatedly to leak kernel memory, potentially exhausting available memory.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/0d6c5794fd633427f0d4ad8b51d94061295649da
• https://git.kernel.org/stable/c/5cd2354ebfbd35bcb88d01fe7d3ee08dcf266eff