What’s Vulnerable › Vulnerabilities

CVE-2025-39772: drm/hisilicon/hibmc: fix the hibmc loaded failed bug

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-11 · updated 2026-10-19
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: drm/hisilicon/hibmc: fix the hibmc loaded failed bug When hibmc loaded failed, the driver use hibmc_unload to free the resource, but the mutexes in mode.config are not init, which will access an NULL pointer. Just change goto statement to return, because hibnc_hw_init() doesn't need to free anything.

Affected products

• Debian Linux: 11.0
• Linux kernel: from 4.14 before 5.15.190; from 5.16 before 6.1.149; from 6.2 before 6.6.103; from 6.7 before 6.12.44; from 6.13 before 6.16.4; 6.17-rc1, 6.17-rc2 — fixed in 5.15.190, 6.1.149, 6.12.44, 6.16.4, 6.6.103

How to fix

Upgrade to a fixed version: Linux kernel 5.15.190, 6.1.149, 6.12.44, 6.16.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/93a08f856fcc5aaeeecad01f71bef3088588216a
• https://git.kernel.org/stable/c/a4f1b9c57092c48bdc7958abd23403ccaed437b2
• https://git.kernel.org/stable/c/c950e1be3a24d021475b56efdb49daa7fbba63a9
• https://git.kernel.org/stable/c/d3e774266c28aefab3e9db334fdf568f936cae04
• https://git.kernel.org/stable/c/ddf1691f25345699296e642f0f59f2d464722fa3
• https://git.kernel.org/stable/c/f93032e5d68f459601c701f6ab087b5feb3382e8
• https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
• https://cert-portal.siemens.com/productcert/html/ssa-032379.html

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