Memory leak in Linux kernel - CVE-2022-49897
Published: May 2, 2025 / Updated: May 10, 2025
Vulnerability identifier: #VU108132
CSH Severity: Low
CVSS v4.0: 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
CVE-ID: CVE-2022-49897
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
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.
How to mitigate CVE-2022-49897
Install update from vendor's website.
Sources
- 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