SB20240608207 - Improper locking in Linux kernel powerpc net
Published: June 8, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240608207
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-2021-47317)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the PPC_BCC_SHORT() function in arch/powerpc/net/bpf_jit_comp64.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/7284dab07e4d51d453cc42851fae9ec4fac6ef2f
- https://git.kernel.org/stable/c/0d435b6d94b05dcfd836d758a63145aa566618e2
- https://git.kernel.org/stable/c/419ac821766cbdb9fd85872bb3f1a589df05c94c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14