SB2024060398 - Improper locking in Linux kernel char hw_random driver
Published: June 3, 2024 Updated: May 14, 2025
Security Bulletin ID
SB2024060398
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) Improper locking (CVE-ID: CVE-2023-52615)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the rng_get_data() and rng_dev_read() functions in drivers/char/hw_random/core.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/eafd83b92f6c044007a3591cbd476bcf90455990
- https://git.kernel.org/stable/c/5030d4c798863ccb266563201b341a099e8cdd48
- https://git.kernel.org/stable/c/c6a8111aacbfe7a8a70f46cc0de8eed00561693c
- https://git.kernel.org/stable/c/26cc6d7006f922df6cc4389248032d955750b2a0
- https://git.kernel.org/stable/c/aa8aa16ed9adf1df05bb339d588cf485a011839e
- https://git.kernel.org/stable/c/ecabe8cd456d3bf81e92c53b074732f3140f170d
- https://git.kernel.org/stable/c/6822a14271786150e178869f1495cc03e74c5029
- https://git.kernel.org/stable/c/78aafb3884f6bc6636efcc1760c891c8500b9922
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.307
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.210
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.149
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.269
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.76
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8