CVE-2024-35952
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.
Does this matter?
Lower severity and a low EPSS score (0.17%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.17% probability · 7th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-667
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/35768baf0fdfc47ede42d899506bad78450e9294Patch
- https://git.kernel.org/stable/c/8a6fea3fcb577a543ef67683ca7105bde49a38fbPatch
- https://git.kernel.org/stable/c/a81b2acd43e24e419f65df97348c76a5a1496066Patch
- https://git.kernel.org/stable/c/bc004f5038220b1891ef4107134ccae44be55109Patch
- https://git.kernel.org/stable/c/35768baf0fdfc47ede42d899506bad78450e9294Patch
- https://git.kernel.org/stable/c/8a6fea3fcb577a543ef67683ca7105bde49a38fbPatch
- https://git.kernel.org/stable/c/a81b2acd43e24e419f65df97348c76a5a1496066Patch
- https://git.kernel.org/stable/c/bc004f5038220b1891ef4107134ccae44be55109Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.