SB20260919145 - Improper resource shutdown or release in Linux kernel core
Published: September 19, 2026
Security Bulletin ID
SB20260919145
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 resource shutdown or release (CVE-ID: CVE-2026-90077)
CWE-ID: CWE-404 - Improper Resource Shutdown or Release
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/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 resource leak.
The vulnerability exists due to improper resource release in copy_net_ns() when handling a failure during network namespace initialization. A local user can trigger a failure in ns_common_init() while creating a network namespace to cause a resource leak.
Remediation
Install update from vendor's website.