CVE-2025-40062

crypto: hisilicon/qm - set NULL to qm->debug.qm_diff_regs

EPSS 0.2%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

28 Oct 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

In the Linux kernel, the following vulnerability has been resolved: crypto: hisilicon/qm - set NULL to qm->debug.qm_diff_regs When the initialization of qm->debug.acc_diff_reg fails, the probe process does not exit. However, after qm->debug.qm_diff_regs is freed, it is not set to NULL. This can lead to a double free when the remove process attempts to free it again. Therefore, qm->debug.qm_diff_regs should be set to NULL after it is freed.

Affected products

Linux · Linux

References

https://git.kernel.org/stable/c/1750f1ec143ebabdbdfa013668665c9d5042c430 https://git.kernel.org/stable/c/7226a0650ad5705bd8d39a11be270fa21ed1e6a5 https://git.kernel.org/stable/c/a7836260d5121949ba734e840d42a86ab4a32fcc https://git.kernel.org/stable/c/a87a21a56244b8f4eb357f6bad879247005bbe38 https://git.kernel.org/stable/c/f0cafb02de883b3b413d34eb079c9680782a9cc1