SB2024071353 - NULL pointer dereference in Linux kernel bridge
Published: July 13, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024071353
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) NULL pointer dereference (CVE-ID: CVE-2024-40921)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the br_mst_get_state(), br_mst_set_state() and br_mst_vlan_sync_state() functions in net/bridge/br_mst.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/09f4337c27f5bdeb8646a6db91488cc2f7d537ff
- https://git.kernel.org/stable/c/a6cc9e9a651b9861efa068c164ee62dfba68c6ca
- https://git.kernel.org/stable/c/d2dc02775fc0c4eacaee833a0637e5958884a8e5
- https://git.kernel.org/stable/c/36c92936e868601fa1f43da6758cf55805043509
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.95
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.35