SB2025051712 - Use-after-free in Linux kernel sched
Published: May 17, 2025
Security Bulletin ID
SB2025051712
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-2025-37890)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the hfsc_enqueue() function in net/sched/sch_hfsc.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/141d34391abbb315d68556b7c67ad97885407547
- https://git.kernel.org/stable/c/2e7093c7a8aba5d4f8809f271488e5babe75e202
- https://git.kernel.org/stable/c/6082a87af4c52f58150d40dec1716011d871ac21
- https://git.kernel.org/stable/c/8df7d37d626430035b413b97cee18396b3450bef
- https://git.kernel.org/stable/c/ac39fd4a757584d78ed062d4f6fd913f83bd98b5
- https://git.kernel.org/stable/c/e3e949a39a91d1f829a4890e7dfe9417ac72e4d0
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.182