发布时间: 2024年10月11日
修改时间: 2024年10月11日
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Don't refer to dc_sink in is_dsc_need_re_compute [Why] When unplug one of monitors connected after mst hub, encounter null pointer dereference. It's due to dc_sink get released immediately in early_unregister() or detect_ctx(). When commit new state which directly referring to info stored in dc_sink will cause null pointer dereference. [how] Remove redundant checking condition. Relevant condition should already be covered by checking if dsc_aux is null or not. Also reset dsc_aux to NULL when the connector is disconnected.
| NVD | openEuler | |
|---|---|---|
| CVSS评分 | 5.5 | 3.9 |
| Attack Vector | Local | Local |
| Attack Complexity | Low | High |
| Privileges Required | Low | High |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality | None | Low |
| Integrity | None | Low |
| Availability | High | Low |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2024-3894 | In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Don't refer to dc_sink in is_dsc_need_re_compute [Why] When unplug one of monitors connected after mst hub, encounter null pointer dereference. It's due to dc_sink get released immediately in early_unregister() or detect_ctx(). When commit new state which directly referring to info stored in dc_sink will cause null pointer dereference. [how] Remove redundant checking condition. Relevant condition should already be covered by checking if dsc_aux is null or not. Also reset dsc_aux to NULL when the connector is disconnected. | 2024年10月12日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.4-5 | kernel | Unaffected |
| KY3.5.2 | kernel | Unaffected |
| KY3.5.3 | kernel | Unaffected |
| V6 | kernel | Unaffected |
