SB2025050227 - Memory leak in Linux kernel crypto
Published: May 2, 2025 Updated: May 10, 2025
Security Bulletin ID
SB2025050227
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Memory leak (CVE-ID: CVE-2022-49897)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the __put_super() and generic_shutdown_super() functions in fs/super.c, within the allocate_filesystem_keyring() function in fs/crypto/keyring.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0b1747653b102c555bac745ebe5ca86cdd20e43f
- https://git.kernel.org/stable/c/29997a6fa60de1de2fa0de471e7652efa6e95868
- https://git.kernel.org/stable/c/ccd30a476f8e864732de220bd50e6f372f5ebcab
- https://git.kernel.org/stable/c/cff805b1518f38d57866065343db2285f2dcd5ab
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.78