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CVE-2024-57798 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req() While receiving an MST up request message from one thread in drm_dp_mst_handle_up_req(), the MST topology could be removed from another thread via drm_dp_mst_topology_mgr_set_mst(false), freeing mst_primary and setting drm_dp_mst_topology_mgr::mst_primary to NULL. This could lead to a NULL deref/use-after-free of mst_primary in drm_dp_mst_handle_up_req(). Avoid the above by holding a reference for mst_primary in drm_dp_mst_handle_up_req() while it's used. v2: Fix kfreeing the request if getting an mst_primary reference fails.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/9735d40f5fde9970aa46e828ecc85c32571d58a2 Patch 
https://git.kernel.org/stable/c/ce55818b2d3a999f886af91679589e4644ff1dc8 Patch 
https://git.kernel.org/stable/c/e54b00086f7473dbda1a7d6fc47720ced157c6a8 Patch 
https://git.kernel.org/stable/c/f61b2e5e7821f868d6afc22382a66a30ee780ba0 Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-476 NULL Pointer Dereference cwe source acceptance level NIST  
CWE-416 Use After Free cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2024-57798
NVD Published Date:
01/11/2025
NVD Last Modified:
02/03/2025
Source:
kernel.org