摘要:
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.
安全等级: Low
公告ID: KylinSec-SA-2024-2054
发布日期: 2024年5月27日
关联CVE: CVE-2024-26912
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.
| cve名称 | 产品 | 组件 | 是否受影响 |
|---|---|---|---|
| CVE-2024-26912 | KY3.4-4A | kernel | Unaffected |
| CVE-2024-26912 | KY3.4-5 | kernel | Unaffected |
| CVE-2024-26912 | KY3.5.1 | kernel | Unaffected |
| CVE-2024-26912 | KY3.5.3 | kernel | Unaffected |
| CVE-2024-26912 | V6 | kernel | Unaffected |
