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Vulnerabilities CVE-2025-21728

CVE-2025-21728

None
Open
TLP:CLEAR

bpf: Send signals asynchronously if !preemptible

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Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Send signals asynchronously if !preemptible BPF programs can execute in all kinds of contexts and when a program running in a non-preemptible context uses the bpf_send_signal() kfunc, it will cause issues because this kfunc can sleep. Change `irqs_disabled()` to `!preemptible()`.

Details

EPSS Score
0.19%

8.8th percentile

Confidence
90%
Published
Feb 27, 2025
Last Modified
Jul 14, 2026
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