CVE-2024-35952 (GCVE-0-2024-35952)

Vulnerability from cvelistv5 – Published: 2024-05-20 09:41 – Updated: 2025-05-04 09:09
VLAI?
Title
drm/ast: Fix soft lockup
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 594e9c04b5864b4b8b151ef4ba9521c59e0f5c54 , < 8a6fea3fcb577a543ef67683ca7105bde49a38fb (git)
Affected: 594e9c04b5864b4b8b151ef4ba9521c59e0f5c54 , < a81b2acd43e24e419f65df97348c76a5a1496066 (git)
Affected: 594e9c04b5864b4b8b151ef4ba9521c59e0f5c54 , < 35768baf0fdfc47ede42d899506bad78450e9294 (git)
Affected: 594e9c04b5864b4b8b151ef4ba9521c59e0f5c54 , < bc004f5038220b1891ef4107134ccae44be55109 (git)
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    Linux Linux Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 6.1.87 , ≤ 6.1.* (semver)
Unaffected: 6.6.28 , ≤ 6.6.* (semver)
Unaffected: 6.8.7 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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