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CVE-2025-21965

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CVE-2025-21965

Published: Apr 1, 2025

Modified: May 11, 2026

PUBLISHED

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.

VendorProductVersions

Linux

Linux

affected
f0e1a0643a59bf1f922fa209cec86a170b784f3f - < 752b56bb76e2471197d25d6948d85753043b10da
affected
f0e1a0643a59bf1f922fa209cec86a170b784f3f - < 515680e76c536dd4aa8e2b5d674b0d441baddf5b
affected
f0e1a0643a59bf1f922fa209cec86a170b784f3f - < 9360dfe4cbd62ff1eb8217b815964931523b75b3

Linux

Linux

affected
6.12
unaffected
0 - < 6.12
unaffected
6.12.20 - <= 6.12.*
unaffected
6.13.8 - <= 6.13.*
unaffected
6.14 - <= *

References

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