SB2024082645 - Use-after-free in Linux kernel bridge
Published: August 26, 2024 Updated: May 12, 2025
Security Bulletin ID
SB2024082645
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2024-44934)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the br_multicast_del_port() function in net/bridge/br_multicast.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1e16828020c674b3be85f52685e8b80f9008f50f
- https://git.kernel.org/stable/c/0d8b26e10e680c01522d7cc14abe04c3265a928f
- https://git.kernel.org/stable/c/e3145ca904fa8dbfd1a5bf0187905bc117b0efce
- https://git.kernel.org/stable/c/b2f794b168cf560682ff976b255aa6d29d14a658
- https://git.kernel.org/stable/c/92c4ee25208d0f35dafc3213cdf355fbe449e078
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.165
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.105
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.46