SB2026092570 - Memory leak in Linux kernel block
Published: September 25, 2026
Security Bulletin ID
SB2026092570
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) Memory leak (CVE-ID: CVE-2026-93795)
CWE-ID: CWE-401 - Missing release of memory 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 resource exhaustion.
The vulnerability exists due to improper reference count management in the blkg_create() error path when radix_tree_insert() fails. A local user can trigger a radix_tree_insert() failure during blkcg creation to cause resource exhaustion.
The blkcg group may be marked online despite not being fully inserted.
Remediation
Install update from vendor's website.