SB2024061344 - Improper locking in Linux kernel net
Published: June 13, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024061344
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-2024-26837)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the switchdev_obj_eq() and switchdev_port_obj_del() functions in net/switchdev/switchdev.c, within the br_switchdev_mdb_replay_one() and br_switchdev_mdb_replay() functions in net/bridge/br_switchdev.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/2d5b4b3376fa146a23917b8577064906d643925f
- https://git.kernel.org/stable/c/603be95437e7fd85ba694e75918067fb9e7754db
- https://git.kernel.org/stable/c/e0b4c5b1d760008f1dd18c07c35af0442e54f9c8
- https://git.kernel.org/stable/c/dc489f86257cab5056e747344f17a164f63bff4b
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.80
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8