CVE-2024-35952
Ast DP Kernel Device Driver Infinite Loop Vulnerability
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.
INFO
Published Date :
May 20, 2024, 10:15 a.m.
Last Modified :
Nov. 21, 2024, 9:21 a.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
References to Advisories, Solutions, and Tools
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CVE-2024-35952.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2024-35952 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-35952 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/35768baf0fdfc47ede42d899506bad78450e9294 Added Reference https://git.kernel.org/stable/c/8a6fea3fcb577a543ef67683ca7105bde49a38fb Added Reference https://git.kernel.org/stable/c/a81b2acd43e24e419f65df97348c76a5a1496066 Added Reference https://git.kernel.org/stable/c/bc004f5038220b1891ef4107134ccae44be55109 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 29, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 20, 2024
Action Type Old Value New Value Added 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. Added Reference kernel.org https://git.kernel.org/stable/c/8a6fea3fcb577a543ef67683ca7105bde49a38fb [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/a81b2acd43e24e419f65df97348c76a5a1496066 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/35768baf0fdfc47ede42d899506bad78450e9294 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/bc004f5038220b1891ef4107134ccae44be55109 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-35952 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-35952
weaknesses.