SB20260916146 - Improper Check for Unusual or Exceptional Conditions in Linux kernel nvme host driver
Published: September 16, 2026
Security Bulletin ID
SB20260916146
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Check for Unusual or Exceptional Conditions (CVE-ID: CVE-2026-89971)
CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper handling of positive NVMe status codes in nvme_update_ns_info_block() when processing a failed NVMe zone information query. A remote attacker can cause the zone information query to fail, resulting in a zoned queue with a zero zone size.
Remediation
Install update from vendor's website.