{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53545", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-10-04T15:14:15.920Z", "datePublished": "2025-10-04T15:16:53.452Z", "dateUpdated": "2026-08-05T09:14:44.686Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:14:44.686Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: unmap and remove csa_va properly\n\nRoot PD BO should be reserved before unmap and remove\na bo_va from VM otherwise lockdep will complain.\n\nv2: check fpriv->csa_va is not NULL instead of amdgpu_mcbp (christian)\n\n[14616.936827] WARNING: CPU: 6 PID: 1711 at drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1762 amdgpu_vm_bo_del+0x399/0x3f0 [amdgpu]\n[14616.937096] Call Trace:\n[14616.937097] \n[14616.937102] amdgpu_driver_postclose_kms+0x249/0x2f0 [amdgpu]\n[14616.937187] drm_file_free+0x1d6/0x300 [drm]\n[14616.937207] drm_close_helper.isra.0+0x62/0x70 [drm]\n[14616.937220] drm_release+0x5e/0x100 [drm]\n[14616.937234] __fput+0x9f/0x280\n[14616.937239] ____fput+0xe/0x20\n[14616.937241] task_work_run+0x61/0x90\n[14616.937246] exit_to_user_mode_prepare+0x215/0x220\n[14616.937251] syscall_exit_to_user_mode+0x2a/0x60\n[14616.937254] do_syscall_64+0x48/0x90\n[14616.937257] entry_SYSCALL_64_after_hwframe+0x63/0xcd" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable code runs in the DRM file release path (`close()`/process exit on /dev/dri/renderD* → drm_release → amdgpu_driver_postclose_kms), which requires a local file descriptor on the GPU device node. There is no remote or adjacent-network path to this code.\nAC:L - Triggering the unlocked amdgpu_vm_bo_del() requires nothing more than closing the DRM fd, and the attacker controls both sides of the resulting race — one thread submits faulting GPU work or VRAM eviction pressure (driving amdgpu_vm_handle_fault/amdgpu_vm_bo_invalidate under the root PD reservation) while another loops open/close. On SR-IOV VFs the CSA path is taken with stock settings, requiring no special tuning.\nPR:L - Only an unprivileged local user with access to the DRM render node is needed — these are group-accessible on ordinary distributions and available to every app on Android; no capability check exists on the path from drm_release to amdgpu_driver_postclose_kms.\nUI:N - The attacker performs the fd close and the concurrent GPU submissions entirely within their own process; no victim action is involved.\nS:U - Corruption is confined to the guest/host kernel that owns the amdgpu VM; even on an SR-IOV virtual function the VF remains constrained by host GPU/IOMMU isolation, so no security authority is crossed.\nC:H - Unlocked removal from the vm->va interval tree and vm->freed list racing with locked traversals leaves freed amdgpu_bo_va_mapping objects reachable, and corrupted GPU page-table updates map DMA-visible memory, yielding an arbitrary-read primitive over kernel memory.\nI:H - The same rb-tree/list corruption and use-after-free on mapping structures provide a write primitive, and because the affected structures drive GPU PTE programming, an attacker can influence which physical memory the GPU is allowed to write.\nA:H - The path contains an explicit BUG_ON() plus the dma_resv_assert_held() WARN reported in the commit — the latter panics outright under panic_on_warn — and the underlying race produces oopses from torn interval-tree state on every fd close." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/amd/amdgpu/amdgpu_csa.c", "drivers/gpu/drm/amd/amdgpu/amdgpu_csa.h", "drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c" ], "versions": [ { "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21", "lessThan": "1bc35e637a81dac5f5155e83a277c26708c4d4d7", "status": "affected", "versionType": "git" }, { "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21", "lessThan": "ae325b245208394279a1dc412c831ebd71befb0d", "status": "affected", "versionType": "git" }, { "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21", "lessThan": "a3a96bf843c356d1d9b2d7f6d0784b6ee28ca9d0", "status": "affected", "versionType": "git" }, { "version": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21", "lessThan": "5daff15cd013422bc6d1efcfe82b586800025384", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/amd/amdgpu/amdgpu_csa.c", "drivers/gpu/drm/amd/amdgpu/amdgpu_csa.h", "drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c" ], "versions": [ { "version": "4.2", "status": "affected" }, { "version": "0", "lessThan": "4.2", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.167", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.4.12", "lessThanOrEqual": "6.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.5", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "5.15.209" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.1.167" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.4.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.5" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/1bc35e637a81dac5f5155e83a277c26708c4d4d7" }, { "url": "https://git.kernel.org/stable/c/ae325b245208394279a1dc412c831ebd71befb0d" }, { "url": "https://git.kernel.org/stable/c/a3a96bf843c356d1d9b2d7f6d0784b6ee28ca9d0" }, { "url": "https://git.kernel.org/stable/c/5daff15cd013422bc6d1efcfe82b586800025384" } ], "title": "drm/amdgpu: unmap and remove csa_va properly", "x_generator": { "engine": "bippy-1.2.0" } } } }