SB2024061353 - Improper locking in Linux kernel ipv6
Published: June 13, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024061353
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-2021-47146)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the mld_newpack() function in net/ipv6/mcast.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/0e35b7457b7b6e73ffeaaca1a577fdf1af0feca1
- https://git.kernel.org/stable/c/17728616a4c85baf0edc975c60ba4e4157684d9a
- https://git.kernel.org/stable/c/221142038f36d9f28b64e83e954774da4d4ccd17
- https://git.kernel.org/stable/c/4b77ad9097067b31237eeeee0bf70f80849680a0
- https://git.kernel.org/stable/c/37d697759958d111439080bab7e14d2b0e7b39f5
- https://git.kernel.org/stable/c/beb39adb150f8f3b516ddf7c39835a9788704d23
- https://git.kernel.org/stable/c/a76fb9ba545289379acf409653ad5f74417be59c
- https://git.kernel.org/stable/c/020ef930b826d21c5446fdc9db80fd72a791bc21
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.235
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.193
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.271
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.271
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.42
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.124