CVE-2024-35952 (GCVE-0-2024-35952)
Vulnerability from cvelistv5
Published
2024-05-20 09:41
Modified
2025-05-04 09:09
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/ast: Fix soft lockup There is a while-loop in ast_dp_set_on_off() that could lead to infinite-loop. This is because the register, VGACRI-Dx, checked in this API is a scratch register actually controlled by a MCU, named DPMCU, in BMC. These scratch registers are protected by scu-lock. If suc-lock is not off, DPMCU can not update these registers and then host will have soft lockup due to never updated status. DPMCU is used to control DP and relative registers to handshake with host's VGA driver. Even the most time-consuming task, DP's link training, is less than 100ms. 200ms should be enough.
References
Impacted products
Vendor Product Version
Linux Linux Version: 594e9c04b5864b4b8b151ef4ba9521c59e0f5c54
Version: 594e9c04b5864b4b8b151ef4ba9521c59e0f5c54
Version: 594e9c04b5864b4b8b151ef4ba9521c59e0f5c54
Version: 594e9c04b5864b4b8b151ef4ba9521c59e0f5c54
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