SB2025122658 - Memory leak in Linux kernel apparmor
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB2025122658
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-2022-50754)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the multi_transaction_new() function in security/apparmor/apparmorfs.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/11d5fe7da67c3334cefc981297fd5defb78df15c
- https://git.kernel.org/stable/c/3d27a436e294ac5d7a51bd5348ca63a42a468b35
- https://git.kernel.org/stable/c/775a37ffa9f4681c4ad84c8634a7eec8af7098d4
- https://git.kernel.org/stable/c/88989932c2269ea66074f52a6213598838f8b9e7
- https://git.kernel.org/stable/c/935d86b29093e75b6c547d90b3979c2c2d23f1c4
- https://git.kernel.org/stable/c/95e6adc6a7a4761ddf69ad713e55a06a3206309d
- https://git.kernel.org/stable/c/c73275cf6834787ca090317f1d20dbfa3b7f05aa
- https://git.kernel.org/stable/c/eb0f78e28cbc8f97439c0a4c80ee5160c1df5ce6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.229