SB2026091717 - Improper update of reference count in Linux kernel soc codecs
Published: September 17, 2026
Security Bulletin ID
SB2026091717
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper update of reference count (CVE-ID: CVE-2026-89944)
CWE-ID: CWE-911 - Improper Update of Reference Count
CVSSv4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/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 denial of service.
The vulnerability exists due to improper reference count management in hdac_hda_dev_probe() when ASoC component registration fails during device probing. A local privileged user can cause component registration to fail to cause a denial of service.
Remediation
Install update from vendor's website.