Updated: 2025-02-04 16:16:03.012598
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.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0 | |
| CVSS Version 3.x | HIGH | 7.8 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | kernel | 5.14.0 | 7.8 | HIGH | Released | CLSA-2025:1743193221 | 2025-03-29 03:48:32 | |
| CentOS 6 ELS | kernel | 2.6.32 | 7.8 | HIGH | Not Vulnerable | 2025-02-24 06:40:08 | ||
| CentOS 7 ELS | kernel | 3.10.0 | 7.8 | HIGH | Released | CLSA-2025:1740649075 | 2025-03-14 23:27:28 | |
| CentOS 8.4 ELS | kernel | 4.18.0 | 7.8 | HIGH | In Testing | CLSA-2025:1747688514 | 2025-05-09 04:28:08 | |
| CentOS 8.5 ELS | kernel | 4.18.0 | 7.8 | HIGH | In Testing | CLSA-2025:1747688831 | 2025-05-09 04:28:09 | |
| CentOS Stream 8 ELS | kernel | 4.18.0 | 7.8 | HIGH | Released | CLSA-2025:1742472545 | 2025-03-21 03:33:13 | |
| CloudLinux 6 ELS | kernel | 2.6.32 | 7.8 | HIGH | Not Vulnerable | 2025-02-24 06:40:08 | ||
| CloudLinux 7 ELS | kernel | 3.10.0 | 7.8 | HIGH | Ignored | 2025-02-24 06:40:07 | ||
| Oracle Linux 6 ELS | kernel | 2.6.32 | 7.8 | HIGH | Not Vulnerable | 2025-02-24 06:40:07 | ||
| Oracle Linux 7 ELS | kernel | 3.10.0 | 7.8 | HIGH | Released | 2025-03-25 03:28:40 |