CVE-2025-21728 - CVE House
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Status published Unknown CVE-2025-21728

bpf: Send signals asynchronously if !preemptible

Vulnerability 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()`.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
fd29a0242f86b2d95ad666aa9f92a3d0f7bfdab6, 1bc7896e9ef44fd77858b3ef0b8a6840be3a4494, 7930d01afb7281edd9782971e0cca6fe587c7a7b, 5.4.33, 5.5.18, 5.6, 0, 5.4.291, 5.10.235, 5.15.179, 6.1.129, 6.6.76, 6.12.13, 6.13.2, 6.14

Timeline

Official Publish: February 27th, 2025
Last Modified: July 14th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.