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. 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).

• https://git.kernel.org/stable/c/0d666db731e95890e0eda7ea61bc925fd2be90c6

  416baaa9-dc9f-4396-8d5f-8c081fb06d67
• https://git.kernel.org/stable/c/321993a874f571a94b5a596f1132f798c663b56e

  416baaa9-dc9f-4396-8d5f-8c081fb06d67
• https://git.kernel.org/stable/c/3f5a238f24d7b75f9efe324d3539ad388f58536e

  416baaa9-dc9f-4396-8d5f-8c081fb06d67
• https://git.kernel.org/stable/c/fd43edf357a3a1f5ed1c4bf450b60001c9091c39

  416baaa9-dc9f-4396-8d5f-8c081fb06d67