Memory leak in Linux kernel - CVE-2026-93795
Published: September 25, 2026
Vulnerability identifier: #VU152094
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-93795
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2026-93795
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3