{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-43370", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:56.006Z", "datePublished": "2026-05-08T14:21:21.926Z", "dateUpdated": "2026-08-05T12:27:32.528Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:27:32.528Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Fix use-after-free race in VM acquire\n\nReplace non-atomic vm->process_info assignment with cmpxchg()\nto prevent race when parent/child processes sharing a drm_file\nboth try to acquire the same VM after fork().\n\n(cherry picked from commit c7c573275ec20db05be769288a3e3bb2250ec618)" } ], "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 path is reached through local AMD KFD/amdgpu device ioctls, especially acquiring an amdgpu render-node VM through /dev/kfd. No network or physical-device packet path reaches this code.\nAC:L - The race is between attacker-controlled processes sharing the same drm_file after fork and issuing concurrent VM-acquire operations. Because the attacker controls both sides of the race, this is low complexity.\nPR:L - An unprivileged local user with access to /dev/kfd and the amdgpu render node can issue the relevant ioctls; no real root or init-namespace capability check is required. This is basic local user access rather than administrative privilege.\nUI:N - Exploitation does not require a victim user action after the attacker has local execution and device access. The attacker can open the device files, fork, and invoke the ioctls directly.\nS:U - The bug corrupts kernel driver state within the same kernel security authority. It is a standard local kernel memory-corruption/privilege-escalation scenario, not a VM escape or other scope change.\nC:H - The non-atomic VM ownership assignment can leave stale amdkfd_process_info references and cause a kernel use-after-free. Following kernel UAF scoring guidance, this can be leveraged for high-impact information disclosure.\nI:H - The freed process_info object contains list, mutex, fence, and process state used later by KFD/GPUVM paths, making this kernel memory corruption. A defensible worst case is arbitrary kernel memory modification or control-flow influence.\nA:H - Even without full exploitation, the UAF and associated list/lifetime corruption can crash or hang the kernel. Kernel oops/panic-level denial of service is high availability impact." } ] } ], "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_gpuvm.c" ], "versions": [ { "version": "ede0dd86f45adf2b7083bb161f6bc81da5fe2bad", "lessThan": "ae87aea330c24f462fc7058ed543ba8bc6798447", "status": "affected", "versionType": "git" }, { "version": "ede0dd86f45adf2b7083bb161f6bc81da5fe2bad", "lessThan": "46d309996bd9251792d7dafdbaf615cf202b4447", "status": "affected", "versionType": "git" }, { "version": "ede0dd86f45adf2b7083bb161f6bc81da5fe2bad", "lessThan": "e61e355cbe49e585097eee28c15b862bfb1c0668", "status": "affected", "versionType": "git" }, { "version": "ede0dd86f45adf2b7083bb161f6bc81da5fe2bad", "lessThan": "c658c1c85ec235b7ecfbf8dbfee385b1332088f4", "status": "affected", "versionType": "git" }, { "version": "ede0dd86f45adf2b7083bb161f6bc81da5fe2bad", "lessThan": "904025fa8bba1d028adade33346372b4ac1a9249", "status": "affected", "versionType": "git" }, { "version": "ede0dd86f45adf2b7083bb161f6bc81da5fe2bad", "lessThan": "7885eb335d8f9e9942925d57e300a85e3f82ded4", "status": "affected", "versionType": "git" }, { "version": "ede0dd86f45adf2b7083bb161f6bc81da5fe2bad", "lessThan": "94b7782d0c8024f5b88454241c8d4777076c3786", "status": "affected", "versionType": "git" }, { "version": "ede0dd86f45adf2b7083bb161f6bc81da5fe2bad", "lessThan": "2c1030f2e84885cc58bffef6af67d5b9d2e7098f", "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_gpuvm.c" ], "versions": [ { "version": "4.17", "status": "affected" }, { "version": "0", "lessThan": "4.17", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.253", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.203", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.167", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.130", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.78", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.19", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.19.9", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0", "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": "4.17", "versionEndExcluding": "5.10.253" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "5.15.203" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.1.167" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.6.130" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.12.78" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.18.19" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.19.9" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "7.0" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/ae87aea330c24f462fc7058ed543ba8bc6798447" }, { "url": "https://git.kernel.org/stable/c/46d309996bd9251792d7dafdbaf615cf202b4447" }, { "url": "https://git.kernel.org/stable/c/e61e355cbe49e585097eee28c15b862bfb1c0668" }, { "url": "https://git.kernel.org/stable/c/c658c1c85ec235b7ecfbf8dbfee385b1332088f4" }, { "url": "https://git.kernel.org/stable/c/904025fa8bba1d028adade33346372b4ac1a9249" }, { "url": "https://git.kernel.org/stable/c/7885eb335d8f9e9942925d57e300a85e3f82ded4" }, { "url": "https://git.kernel.org/stable/c/94b7782d0c8024f5b88454241c8d4777076c3786" }, { "url": "https://git.kernel.org/stable/c/2c1030f2e84885cc58bffef6af67d5b9d2e7098f" } ], "title": "drm/amdgpu: Fix use-after-free race in VM acquire", "x_generator": { "engine": "bippy-1.2.0" } } } }