SB2025040262 - NULL pointer dereference in Linux kernel sched
Published: April 2, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025040262
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-2025-21980)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the gred_destroy() function in net/sched/sch_gred.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/0f0a152957d64ce45b4c27c687e7d087e8f45079
- https://git.kernel.org/stable/c/115ef44a98220fddfab37a39a19370497cd718b9
- https://git.kernel.org/stable/c/5f996b4f80c2cef1f9c77275055e7fcba44c9199
- https://git.kernel.org/stable/c/68896dd50180b38ea552e49a6a00b685321e5769
- https://git.kernel.org/stable/c/d02c9acd68950a444acda18d514e2b41f846cb7f
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.132