CVE-2024-57798

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Source
https://cve.org/CVERecord?id=CVE-2024-57798
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-57798.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2024-57798
Downstream
Related
Published
2025-01-11T12:39:48.212Z
Modified
2026-03-20T12:41:01.535348Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req()
Details

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

drm/dpmst: Ensure mstprimary pointer is valid in drmdpmsthandleup_req()

While receiving an MST up request message from one thread in drmdpmsthandleupreq(), the MST topology could be removed from another thread via drmdpmsttopologymgrsetmst(false), freeing mstprimary and setting drmdpmsttopologymgr::mstprimary to NULL. This could lead to a NULL deref/use-after-free of mstprimary in drmdpmsthandleup_req().

Avoid the above by holding a reference for mstprimary in drmdpmsthandleupreq() while it's used.

v2: Fix kfreeing the request if getting an mst_primary reference fails.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57798.json"
}
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
9408cc94eb041d0c2f9f00189a613b94c0449450
Fixed
f61b2e5e7821f868d6afc22382a66a30ee780ba0
Fixed
9735d40f5fde9970aa46e828ecc85c32571d58a2
Fixed
ce55818b2d3a999f886af91679589e4644ff1dc8
Fixed
e54b00086f7473dbda1a7d6fc47720ced157c6a8

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-57798.json"