SB20260918274 - Missing Release of Resource after Effective Lifetime in Linux kernel block
Published: September 18, 2026
Security Bulletin ID
SB20260918274
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) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-90396)
CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime
CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper error handling in the __blkdev_direct_IO function when an integrity mapping fails during a direct I/O operation with metadata. A local user can perform a direct I/O operation with metadata during an integrity mapping failure to cause a denial of service.
Remediation
Install update from vendor's website.