CVEvulnerability

CVE-2025-21728

5.5 MEDIUM Published 2025-02-27 Modified 2026-10-15 Official page ↗
Status
Modified
Published
2025-02-27
Last modified
2026-10-15
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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()`.

Affected configurations

• linux linux kernel (>= 5.4.33 < 5.4.291) • linux linux kernel (>= 5.5.18 < 5.6) • linux linux kernel (>= 5.6.1 < 5.10.235) • linux linux kernel (>= 5.11 < 5.15.179) • linux linux kernel (>= 5.16 < 6.1.129) • linux linux kernel (>= 6.2 < 6.6.76) • linux linux kernel (>= 6.7 < 6.12.13) • linux linux kernel (>= 6.13 < 6.13.2) • linux linux kernel 5.6

References