LoongArch: BPF: Sign extend kfunc call arguments
CVE-2025-71129 is fixed in linux on 1 platform, first by DEBIAN-CVE-2025-71129, released January 14, 2026. It is not reported as exploited. Patch Radar priority: Routine.
In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: Sign extend kfunc call arguments The kfunc calls are native calls so they should follow LoongArch calling conventions. Sign extend its arguments properly to avoid kernel panic. This is done by adding a new emit_abi_ext() helper. The emit_abi_ext() helper performs extension in place meaning a value already store in the target register (Note: this is different from the existing sign_extend() helper and thus we can't reuse it).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 13.5 (trixie) | 6.12.69-1 | DEBIAN-CVE-2025-71129 | Jan 14, 2026 |
| linux · Debian 14 | 6.18.5-1 | DEBIAN-CVE-2025-71129 | Jan 14, 2026 |
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