CVE-2024-35952

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Source
https://cve.org/CVERecord?id=CVE-2024-35952
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-35952.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-35952
Downstream
Related
Published
2024-05-20T09:41:46.656Z
Modified
2026-03-14T12:34:05.367596Z
Summary
drm/ast: Fix soft lockup
Details

In the Linux kernel, the following vulnerability has been resolved:

drm/ast: Fix soft lockup

There is a while-loop in astdpsetonoff() 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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/35xxx/CVE-2024-35952.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
594e9c04b5864b4b8b151ef4ba9521c59e0f5c54
Fixed
8a6fea3fcb577a543ef67683ca7105bde49a38fb
Fixed
a81b2acd43e24e419f65df97348c76a5a1496066
Fixed
35768baf0fdfc47ede42d899506bad78450e9294
Fixed
bc004f5038220b1891ef4107134ccae44be55109

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-35952.json"