{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-97497", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-24T16:01:01.150Z", "datePublished": "2026-09-24T16:04:44.515Z", "dateUpdated": "2026-10-03T10:59:00.579Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-03T10:59:00.579Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Check bounds for allocate_sdma_queue restore_sdma_id\n\nallocate_sdma_queue has an option where the sdma queue id can be\nspecified (used by CRIU). We weren't bounds-checking that\nvalue.\n\nConfirm it's less than the maximum number of queues." } ], "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 unbounded index is kfd_criu_queue_priv_data.sdma_id, copy_from_user'd in kfd_criu_restore_queue() from AMDKFD_IOC_CRIU_OP KFD_CRIU_OP_RESTORE on /dev/kfd, then passed as restore_sdma_id into allocate_sdma_queue() by create_queue_cpsch()/create_queue_nocpsch(); no network protocol carries that field.\nAC:L - A single crafted KFD_CRIU_OP_RESTORE QUEUE object with type KFD_QUEUE_TYPE_SDMA or KFD_QUEUE_TYPE_SDMA_XGMI and an oversized sdma_id makes allocate_sdma_queue() run test_bit()/clear_bit() on that index; the attacker supplies the whole criu_restore() blob, so no race or victim-owned GPU state is required.\nPR:L - kfd_ioctl() admits AMDKFD_IOC_CRIU_OP only when capable(CAP_CHECKPOINT_RESTORE) or capable(CAP_SYS_ADMIN). CAP_CHECKPOINT_RESTORE is the delegated non-root capability already held by CRIU tooling and container checkpoint services, matching limited local privilege rather than init-namespace root.\nUI:N - The attacker opens their own /dev/kfd (kfd_open -> kfd_init_apertures creates PDDs) and issues KFD_CRIU_OP_RESTORE against that process; no other user must mount media, open a file, or interact.\nS:U - allocate_sdma_queue()'s OOB test_bit()/clear_bit() on the kzalloc'd device_queue_manager sdma_bitmap corrupts host kernel slab inside amdkfd. That stays in the same kernel authority; it is not a KVM/Xen guest-to-host escape or an IOMMU/DMA bypass.\nC:H - restore_sdma_id is a user uint32_t used as the bit index into a KFD_MAX_SDMA_QUEUES (128-bit) dqm->sdma_bitmap. test_bit() of an out-of-range index is an unbounded kernel-bit read (the ioctl returns -EBUSY iff the bit is clear), which is not a few-byte leak.\nI:H - When that out-of-range bit is set, allocate_sdma_queue() does clear_bit(*restore_sdma_id, dqm->sdma_bitmap), a one-bit write at an attacker-chosen offset past the 128-bit map into later dqm fields (fence_addr, hung_db_array) or adjacent kmalloc objects, an OOB write.\nA:H - test_bit()/clear_bit() of a restore_sdma_id whose bitmap word is unmapped oopses inside allocate_sdma_queue(); the same OOB clear can smash dqm pointers and flags and panic the host." } ] } ], "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/amdkfd/kfd_device_queue_manager.c" ], "versions": [ { "version": "2485c12c980a36bb9e23ababb07d73c4ac6a45af", "lessThan": "41460d2dd0246f0ab7e80b103d34c8649e022999", "status": "affected", "versionType": "git" }, { "version": "2485c12c980a36bb9e23ababb07d73c4ac6a45af", "lessThan": "25e1b29ecc8da3609ba0072ca54a3b1fdd1578f3", "status": "affected", "versionType": "git" }, { "version": "2485c12c980a36bb9e23ababb07d73c4ac6a45af", "lessThan": "42f2bd50236b61ad0aeb2c233c990ee0d615fdad", "status": "affected", "versionType": "git" }, { "version": "2485c12c980a36bb9e23ababb07d73c4ac6a45af", "lessThan": "dd2870ca036e1d51baa59f942007b36a595b5890", "status": "affected", "versionType": "git" }, { "version": "2485c12c980a36bb9e23ababb07d73c4ac6a45af", "lessThan": "bfe9a7545b2a7be1c543f1741e16f2d5ec4116ae", "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/amdkfd/kfd_device_queue_manager.c" ], "versions": [ { "version": "5.18", "status": "affected" }, { "version": "0", "lessThan": "5.18", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2", "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": "5.18", "versionEndExcluding": "6.1.189" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.6.158" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.12.111" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.18.53" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/41460d2dd0246f0ab7e80b103d34c8649e022999" }, { "url": "https://git.kernel.org/stable/c/25e1b29ecc8da3609ba0072ca54a3b1fdd1578f3" }, { "url": "https://git.kernel.org/stable/c/42f2bd50236b61ad0aeb2c233c990ee0d615fdad" }, { "url": "https://git.kernel.org/stable/c/dd2870ca036e1d51baa59f942007b36a595b5890" }, { "url": "https://git.kernel.org/stable/c/bfe9a7545b2a7be1c543f1741e16f2d5ec4116ae" } ], "title": "drm/amdkfd: Check bounds for allocate_sdma_queue restore_sdma_id", "x_generator": { "engine": "bippy-1.2.0" } } } }