SB2025122644 - Memory leak in Linux kernel ext4
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB2025122644
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 security vulnerability.
1) Memory leak (CVE-ID: CVE-2023-54062)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the ext4_xattr_move_to_block() function in fs/ext4/xattr.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/1a8822343e67432b658145d2760a524c884da9d4
- https://git.kernel.org/stable/c/76887be2a96193cd11be818551b8934ecdb3123f
- https://git.kernel.org/stable/c/8beaa3cb293a8f7bacf711cf52201d59859dbc40
- https://git.kernel.org/stable/c/a18670395e5f28acddeca037c5e4bd2ea961b70a
- https://git.kernel.org/stable/c/b2fab1807d26acd1c6115b95b5eddd697d84751b
- https://git.kernel.org/stable/c/b87c7cdf2bed4928b899e1ce91ef0d147017ba45
- https://git.kernel.org/stable/c/ba04d6af5ac440a6d5a2d35dc1d8e2cb0323550a
- https://git.kernel.org/stable/c/c5fa4eedddd1c8342ce533cb401c0e693e55b4e3
- https://git.kernel.org/stable/c/f30f3391d089dc91aef91d08f4b04a6c0df2b067
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.283