{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63881", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.018Z", "datePublished": "2026-07-19T14:54:53.676Z", "dateUpdated": "2026-07-20T13:41:08.305Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-20T13:41:08.305Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: fix a vulnerability of integer overflow in kfd debugger\n\nget_queue_ids() computes array_size = num_queues * sizeof(uint32_t),\nwhich could overflow on 32-bit size_t build. using array_size()\ninstead, it saturates to SIZE_MAX on overflow.\n\n(cherry picked from commit 2d57a0475f085c08b49312dfd8edcb461845f285)"}], "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"}}], "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": "a70a93fa568b4f05aba548dadb673703eccf5480", "lessThan": "4e5f808b454167cc58d7084a407a554d8ddc694d", "status": "affected", "versionType": "git"}, {"version": "a70a93fa568b4f05aba548dadb673703eccf5480", "lessThan": "de70a80992396ee306ee3a2810ad28aa1608ba9b", "status": "affected", "versionType": "git"}, {"version": "a70a93fa568b4f05aba548dadb673703eccf5480", "lessThan": "5cf4a41aa0d74e4c83f82d2ce233b5189ed4b43c", "status": "affected", "versionType": "git"}, {"version": "a70a93fa568b4f05aba548dadb673703eccf5480", "lessThan": "4f9eeedc3d3151f8a226fd676c314a813edda5a1", "status": "affected", "versionType": "git"}, {"version": "a70a93fa568b4f05aba548dadb673703eccf5480", "lessThan": "93f5534b35a05ef8a0109c1eefa800062fee810a", "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": "6.5", "status": "affected"}, {"version": "0", "lessThan": "6.5", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.93", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.35", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.12", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "6.5", "versionEndExcluding": "6.6.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "6.12.93"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "6.18.35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "7.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/4e5f808b454167cc58d7084a407a554d8ddc694d"}, {"url": "https://git.kernel.org/stable/c/de70a80992396ee306ee3a2810ad28aa1608ba9b"}, {"url": "https://git.kernel.org/stable/c/5cf4a41aa0d74e4c83f82d2ce233b5189ed4b43c"}, {"url": "https://git.kernel.org/stable/c/4f9eeedc3d3151f8a226fd676c314a813edda5a1"}, {"url": "https://git.kernel.org/stable/c/93f5534b35a05ef8a0109c1eefa800062fee810a"}], "title": "drm/amdkfd: fix a vulnerability of integer overflow in kfd debugger", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"bugzilla": {"description": "kernel: drm/amdkfd: fix a vulnerability of integer overflow in kfd debugger", "id": "2502452", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502452"}, "csaw": false, "cwe": "CWE-787", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/amdkfd: fix a vulnerability of integer overflow in kfd debugger\nget_queue_ids() computes array_size = num_queues * sizeof(uint32_t),\nwhich could overflow on 32-bit size_t build. using array_size()\ninstead, it saturates to SIZE_MAX on overflow.\n(cherry picked from commit 2d57a0475f085c08b49312dfd8edcb461845f285)", "A flaw was found in the Linux kernel's AMD KFD (Kernel Fusion Driver) debugger component. The `get_queue_ids()` function, responsible for handling queue identifiers, contains an integer overflow vulnerability. This occurs when calculating the size of an array, where a malicious local user could provide a large number of queues, causing the size calculation to wrap around on 32-bit systems. This could lead to a heap buffer overflow, potentially resulting in a denial of service or, in certain scenarios, privilege escalation."], "name": "CVE-2026-63881", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-63881\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-63881\nhttps://lore.kernel.org/linux-cve-announce/2026071939-CVE-2026-63881-5a86@gregkh/T"], "threat_severity": "Moderate"}