AZL-56223
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-56223.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-56223
- Upstream
- Published
- 2025-01-11T13:15:29Z
- Modified
- 2026-04-01T05:19:44.735739Z
- 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
- CVE-2024-57798 affecting package kernel 5.15.200.1-1
- 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.
- References