{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-49991", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T12:17:06.054Z", "datePublished": "2024-10-21T18:02:33.805Z", "dateUpdated": "2026-08-05T11:40:56.884Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:40:56.884Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: amdkfd_free_gtt_mem clear the correct pointer\n\nPass pointer reference to amdgpu_bo_unref to clear the correct pointer,\notherwise amdgpu_bo_unref clear the local variable, the original pointer\nnot set to NULL, this could cause use-after-free bug." } ], "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 paths are reached only through ioctls on the local `/dev/kfd` character device (`kfd_ioctl_create_queue`, `kfd_ioctl_destroy_queue`) and through process teardown in `kfd_process_destroy_pdds()`. No network or adjacent-network exposure exists.\nAC:L - The attacker fully controls queue creation/destruction and process exit, so the free of the `amdgpu_bo` and the subsequent reuse of the stale pointer are directly and repeatably triggerable with no race or memory-layout condition outside the attacker's influence. Standard heap grooming from userspace controls what reoccupies the freed object.\nPR:L - `kfd_open()` performs no capability check; any local user holding a file descriptor on `/dev/kfd` (render group on desktops, or the device node passed directly into ROCm containers) can drive the paths. No root or CAP_SYS_ADMIN is needed.\nUI:N - The attacker triggers everything from its own process via ioctls and normal process exit; no action by another user or administrator is required.\nS:U - The corruption stays within the kernel's own memory and security authority — it is standard in-kernel memory corruption, not a hypervisor, IOMMU, or sandbox boundary crossing.\nC:H - Use-after-free on a `struct amdgpu_bo` lets the attacker reclaim the freed slab object with attacker-shaped data and have the driver dereference it (e.g. `amdgpu_bo_gpu_offset(q->wptr_bo)`, kmap/CPU-pointer fields), yielding an arbitrary kernel-memory read primitive and disclosure of kernel addresses and contents.\nI:H - The same UAF gives a write primitive — the freed `amdgpu_bo` is subsequently written through (`amdgpu_bo_kunmap`, `amdgpu_bo_unpin`, refcount and TTM list manipulation) and contains function-pointer-bearing sub-structures, so heap spraying can be leveraged into controlled writes and control-flow hijack for privilege escalation.\nA:H - Even without full exploitation, dereferencing and double-unref'ing a freed buffer object corrupts TTM/slab state and reliably produces an oops or kernel panic, taking down the machine — and it is triggerable repeatedly by any local user with GPU access." } ] } ], "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_amdkfd.c", "drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h", "drivers/gpu/drm/amd/amdkfd/kfd_chardev.c", "drivers/gpu/drm/amd/amdkfd/kfd_device.c", "drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c", "drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c", "drivers/gpu/drm/amd/amdkfd/kfd_process.c", "drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c" ], "versions": [ { "version": "130e0371b7d454bb4a861253c822b9f911ad5d19", "lessThan": "e7831613cbbcd9058d3658fbcdc5d5884ceb2e0c", "status": "affected", "versionType": "git" }, { "version": "130e0371b7d454bb4a861253c822b9f911ad5d19", "lessThan": "30ceb873cc2e97348d9da2265b2d1ddf07f682e1", "status": "affected", "versionType": "git" }, { "version": "130e0371b7d454bb4a861253c822b9f911ad5d19", "lessThan": "71f3240f82987f0f070ea5bed559033de7d4c0e1", "status": "affected", "versionType": "git" }, { "version": "130e0371b7d454bb4a861253c822b9f911ad5d19", "lessThan": "6c9289806591807e4e3be9a23df8ee2069180055", "status": "affected", "versionType": "git" }, { "version": "130e0371b7d454bb4a861253c822b9f911ad5d19", "lessThan": "c86ad39140bbcb9dc75a10046c2221f657e8083b", "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_amdkfd.c", "drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h", "drivers/gpu/drm/amd/amdkfd/kfd_chardev.c", "drivers/gpu/drm/amd/amdkfd/kfd_device.c", "drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c", "drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c", "drivers/gpu/drm/amd/amdkfd/kfd_process.c", "drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c" ], "versions": [ { "version": "4.3", "status": "affected" }, { "version": "0", "lessThan": "4.3", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.118", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.55", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10.14", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.3", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12", "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": "4.3", "versionEndExcluding": "6.1.118" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "6.6.55" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "6.10.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "6.11.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "6.12" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/e7831613cbbcd9058d3658fbcdc5d5884ceb2e0c" }, { "url": "https://git.kernel.org/stable/c/30ceb873cc2e97348d9da2265b2d1ddf07f682e1" }, { "url": "https://git.kernel.org/stable/c/71f3240f82987f0f070ea5bed559033de7d4c0e1" }, { "url": "https://git.kernel.org/stable/c/6c9289806591807e4e3be9a23df8ee2069180055" }, { "url": "https://git.kernel.org/stable/c/c86ad39140bbcb9dc75a10046c2221f657e8083b" } ], "title": "drm/amdkfd: amdkfd_free_gtt_mem clear the correct pointer", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-49991", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-10-22T13:31:14.431279Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-22T13:38:42.686Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:24:09.828Z" } } ] } }