CVE-2025-71129
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.
Does this matter?
Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own.
Description
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).
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0d666db731e95890e0eda7ea61bc925fd2be90c6Patch
- https://git.kernel.org/stable/c/321993a874f571a94b5a596f1132f798c663b56ePatch
- https://git.kernel.org/stable/c/3f5a238f24d7b75f9efe324d3539ad388f58536ePatch
- https://git.kernel.org/stable/c/fd43edf357a3a1f5ed1c4bf450b60001c9091c39Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.