SB20251230111 - Memory leak in Linux kernel char hw_random driver
Published: December 30, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251230111
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-2022-50868)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the mod_init() and mod_exit() functions in drivers/char/hw_random/amd-rng.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/1199f8e02941b326c60ab71a63002b7c80e38212
- https://git.kernel.org/stable/c/2b79a5e560779b35e1164d57ae35c48b43373082
- https://git.kernel.org/stable/c/2e10ecd012ae2b2a374b34f307e9bc1e6096c03d
- https://git.kernel.org/stable/c/526c316948819d3ecd2bb20fe5e2580c51a1b760
- https://git.kernel.org/stable/c/5998e5c30e839f73e62cb29e0d9617b0d16ccba3
- https://git.kernel.org/stable/c/cb348c7908631dd9f60083a0a1542eab055d3edf
- https://git.kernel.org/stable/c/e246f5eff26055bdcb61a2cc99c50af72a19680f
- https://git.kernel.org/stable/c/ecadb5b0111ea19fc7c240bb25d424a94471eb7d
- https://git.kernel.org/stable/c/f1c97f72ffd504f49882774e2ab689d982dc7afc
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.337