SB2025100462 - Memory leak in Linux kernel rtc driver
Published: October 4, 2025 Updated: October 27, 2025
Security Bulletin ID
SB2025100462
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-2022-50477)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the devm_rtc_allocate_device() function in drivers/rtc/class.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/0bcfc8fd3e596994f527b46730579428b3a4fa5f
- https://git.kernel.org/stable/c/59457a0f079eae19aaf322b3cc1c8ba66f55c5f3
- https://git.kernel.org/stable/c/60da73808298ff2cfa9f165d55eb3d7aa7078601
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2