发布时间: 2024年5月27日
修改时间: 2025年4月13日
In the Linux kernel, the following vulnerability has been resolved:drm/nouveau: fix several DMA buffer leaksNouveau manages GSP-RM DMA buffers with nvkm_gsp_mem objects. Several ofthese buffers are never dealloced. Some of them can be deallocatedright after GSP-RM is initialized, but the rest need to stay until thedriver unloads.Also futher bullet-proof these objects by poisoning the buffer andclearing the nvkm_gsp_mem object when it is deallocated. Poisoningthe buffer should trigger an error (or crash) from GSP-RM if it triesto access the buffer after we ve deallocated it, because we were wrongabout when it is safe to deallocate.Finally, change the mem->size field to a size_t because that s the sametype that dma_alloc_coherent expects.
| NVD | openEuler | |
|---|---|---|
| Confidentiality | None | None |
| Attack Vector | Local | Local |
| CVSS评分 | 5.5 | 5.5 |
| Attack Complexity | Low | Low |
| Privileges Required | Low | Low |
| Scope | Unchanged | Unchanged |
| Integrity | None | None |
| User Interaction | None | None |
| Availability | High | High |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2024-2054 | In the Linux kernel, the following vulnerability has been resolved:drm/nouveau: fix several DMA buffer leaksNouveau manages GSP-RM DMA buffers with nvkm_gsp_mem objects. Several ofthese buffers are never dealloced. Some of them can be deallocatedright after GSP-RM is initialized, but the rest need to stay until thedriver unloads.Also futher bullet-proof these objects by poisoning the buffer andclearing the nvkm_gsp_mem object when it is deallocated. Poisoningthe buffer should trigger an error (or crash) from GSP-RM if it triesto access the buffer after we ve deallocated it, because we were wrongabout when it is safe to deallocate.Finally, change the mem->size field to a size_t because that s the sametype that dma_alloc_coherent expects. | 2024年5月27日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.4-4A | kernel | Unaffected |
| KY3.4-5 | kernel | Unaffected |
| KY3.5.1 | kernel | Unaffected |
| KY3.5.2 | kernel | Unaffected |
| KY3.5.3 | kernel | Unaffected |
| V6 | kernel | Unaffected |
