Memory leak in Linux kernel - CVE-2022-49366
Published: February 26, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104257
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:U/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-49366
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the smb_check_perm_dacl() function in fs/ksmbd/smbacl.c. A local user can perform a denial of service (DoS) attack.
Affected software
Linux kernel
How to mitigate CVE-2022-49366
Install update from vendor's website.
Linux kernel - addressed in versions 5.15.47, 5.17.15, 5.18.4, 5.19
External References
- https://git.kernel.org/stable/c/248d71b440aef829f5cc5f6545ca113ef5062900
- https://git.kernel.org/stable/c/9758a6653c27867d810de02b4e5697163dda9883
- https://git.kernel.org/stable/c/cf824b95c12a1abacadbc2d069931963221a3414
- https://git.kernel.org/stable/c/d21a580dafc69aa04f46e6099616146a536b0724
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.47
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19