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CVE-2025-21728 In the Linux kernel, the following vulnerability has been resolved: bpf: Send signals asynchronously if !preemptible BPF…
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 products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux 6.14 | earliest → < 6.14 | 6.14 |
| Linux 6.13 | earliest → < 6.13.2 | 6.13.2 |
| Linux 6.12 | earliest → < 6.12.13 | 6.12.13 |
| Linux 6.6 | earliest → < 6.6.76 | 6.6.76 |
| Linux 6.1 | earliest → < 6.1.129 | 6.1.129 |
| Linux 5.15 | earliest → < 5.15.179 | 5.15.179 |
| Linux 5.10 | earliest → < 5.10.235 | 5.10.235 |
| Linux | 5.6 | No fix stated |
| Linux 5.4 | earliest → < 5.4.291 | 5.4.291 |
Show the 4 other branches Hide the 4 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1 | 3.1.5 → latest | No fix stated |
| SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1 | 3.1.5 → latest | No fix stated |
| SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | Versions not published | |
| SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1 | 3.1.5 → latest | No fix stated |
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