CVE-2024-57798

HIGH EPSS 11.9%
Published Jan 11, 20251y ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published Jan 11, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
11.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 2

CWE-416 Use After Free Memory Safety
CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel* <6.1.123
linuxlinux_kernel*≥6.2  –  <6.6.69
linuxlinux_kernel*≥6.7  –  <6.12.8
linuxlinux_kernel6.13any

References 5

  • git.kernel.org https://git.kernel.org/stable/c/9735d40f5fde9970aa46e828ecc85c32571d58a2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ce55818b2d3a999f886af91679589e4644ff1dc8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e54b00086f7473dbda1a7d6fc47720ced157c6a8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f61b2e5e7821f868d6afc22382a66a30ee780ba0
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html

Remediation

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