SB2024060389 - Improper locking in Linux kernel sched
Published: June 3, 2024 Updated: May 14, 2025
Security Bulletin ID
SB2024060389
CSH 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 vulnerability.
1) Improper locking (CVE-ID: CVE-2024-26740)
CWE-ID: CWE-667 - Improper Locking
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the mirred_egress_to_ingress_tcp_test() function in tools/testing/selftests/net/forwarding/tc_actions.sh, within the is_mirred_nested() and tcf_mirred_to_dev() functions in net/sched/act_mirred.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/7c787888d164689da8b1b115f3ef562c1e843af4
- https://git.kernel.org/stable/c/60ddea1600bc476e0f5e02bce0e29a460ccbf0be
- https://git.kernel.org/stable/c/52f671db18823089a02f07efc04efdb2272ddc17
- 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