Linux Kernel LoongArch BPF kfunc Sign-Extend Argument Vulnerability
CVE-2025-71129 Published on January 14, 2026
LoongArch: BPF: Sign extend kfunc call arguments
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).
Products Associated with CVE-2025-71129
Want to know whenever a new CVE is published for Linux Kernel? stack.watch will email you.
Affected Versions
Linux:- Version 5dc615520c4dfb358245680f1904bad61116648e and below fd43edf357a3a1f5ed1c4bf450b60001c9091c39 is affected.
- Version 5dc615520c4dfb358245680f1904bad61116648e and below 0d666db731e95890e0eda7ea61bc925fd2be90c6 is affected.
- Version 5dc615520c4dfb358245680f1904bad61116648e and below 321993a874f571a94b5a596f1132f798c663b56e is affected.
- Version 5dc615520c4dfb358245680f1904bad61116648e and below 3f5a238f24d7b75f9efe324d3539ad388f58536e is affected.
- Version 6.1 is affected.
- Before 6.1 is unaffected.
- Version 6.6.120, <= 6.6.* is unaffected.
- Version 6.12.64, <= 6.12.* is unaffected.
- Version 6.18.4, <= 6.18.* is unaffected.
- Version 6.19, <= * is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.