PT-2026-26113 · Linux · Linux

Published 2026-03-18 · Updated 2026-03-18 · CVE-2025-71270

NVD

In the Linux kernel, the following vulnerability has been resolved:

LoongArch: Enable exception fixup for specific ADE subcode

This patch allows the LoongArch BPF JIT to handle recoverable memory access errors generated by BPF PROBE MEM* instructions.

When a BPF program performs memory access operations, the instructions it executes may trigger ADEM exceptions. The kernel’s built-in BPF exception table mechanism (EX TYPE BPF) will generate corresponding exception fixup entries in the JIT compilation phase; however, the architecture-specific trap handling function needs to proactively call the common fixup routine to achieve exception recovery.

do ade(): fix EX TYPE BPF memory access exceptions for BPF programs, ensure safe execution.

Relevant test cases: illegal address access tests in module attach and subprogs extable of selftests/bpf.

Related Identifiers

CVE-2025-71270

Affected Products

Linux

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2025-71270 · Security Note
• https://git.kernel.org/stable/c/9bdc1ab5e4ce6f066119018d8f69631a46f9c5a0 · Note
• https://git.kernel.org/stable/c/b9d9a221bd14ed4b01d113701976fa376762c544 · Note
• https://git.kernel.org/stable/c/c2ed4f71e9288f21d5c53ff790270758e60fa5f9 · Note
• https://git.kernel.org/stable/c/c49a28068363f3dca439aa5fe4d3b1f8159809fe · Note
• https://git.kernel.org/stable/c/73ede654d9daa2ee41bdd17bc62946fc5a0258cb · Note