CVE-2025-21965

Published: April 2, 2025Last modified: April 2, 2025

Description

In the Linux kernel, the following vulnerability has been resolved: sched_ext: Validate prev_cpu in scx_bpf_select_cpu_dfl() If a BPF scheduler provides an invalid CPU (outside the nr_cpu_ids range) as prev_cpu to scx_bpf_select_cpu_dfl() it can cause a kernel crash. To prevent this, validate prev_cpu in scx_bpf_select_cpu_dfl() and trigger an scx error if an invalid CPU is specified.

Status

References

• https://git.kernel.org/stable/c/515680e76c536dd4aa8e2b5d674b0d441baddf5b
• https://git.kernel.org/stable/c/752b56bb76e2471197d25d6948d85753043b10da
• https://git.kernel.org/stable/c/9360dfe4cbd62ff1eb8217b815964931523b75b3