CVE-2024-42147

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

crypto: hisilicon/debugfs - Fix debugfs uninit process issue

During the zip probe process, the debugfs failure does not stop the probe. When debugfs initialization fails, jumping to the error branch will also release regs, in addition to its own rollback operation.

As a result, it may be released repeatedly during the regs uninit process. Therefore, the null check needs to be added to the regs uninit process.

Weakness

The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.

Affected Software

Potential Mitigations

References

• https://git.kernel.org/stable/c/7fc8d9a525b5c3f8dfa5ed50901e764d8ede7e1e
• https://git.kernel.org/stable/c/8be0913389718e8d27c4f1d4537b5e1b99ed7739
• https://git.kernel.org/stable/c/e0a2d2df9ba7bd6bd7e0a9b6a5e3894f7e8445b3
• https://git.kernel.org/stable/c/eda60520cfe3aba9f088c68ebd5bcbca9fc6ac3c
• https://git.kernel.org/stable/c/7fc8d9a525b5c3f8dfa5ed50901e764d8ede7e1e
• https://git.kernel.org/stable/c/8be0913389718e8d27c4f1d4537b5e1b99ed7739
• https://git.kernel.org/stable/c/e0a2d2df9ba7bd6bd7e0a9b6a5e3894f7e8445b3
• https://git.kernel.org/stable/c/eda60520cfe3aba9f088c68ebd5bcbca9fc6ac3c