CVE-2026-46201

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Note: we cannot use goto out_err here because\nxe_dma_buf_init_obj() already frees bo on failure, and out_err would\ndouble-free it.\n\n(cherry picked from commit a828eb185aac41800df8eae4b60501ccc0dbbe51)"}], "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 is reached via the DRM_IOCTL_PRIME_FD_TO_HANDLE ioctl on the xe device node (drivers/gpu/drm/xe/xe_dma_buf.c), which requires local access to /dev/dri/renderD*. There is no network path.\nAC:L - The leak/UAF triggers when xe_dma_buf_init_obj() fails (ENOMEM in bo creation), a condition the attacker can induce via memory pressure and unlimited retries; per the higher-severity rule this is Low.\nPR:L - The PRIME_FD_TO_HANDLE ioctl is DRM_RENDER_ALLOW and the xe driver exposes DRIVER_RENDER render nodes, so any unprivileged local user with render-node access can trigger it. No real root is required.\nUI:N - The attacker performs the prime-import ioctl directly; no victim action is needed.\nS:U - The dangling attachment and freed bo are kernel-internal to the GPU/dma-buf subsystem; the impact stays within the kernel's security authority.\nC:H - The leaked attachment leaves a dangling importer_priv to the freed bo; via the exporter's move_notify path the freed (reallocatable) object is dereferenced, enabling disclosure of attacker-influenced freed-object contents (UAF).\nI:H - The use-after-free allows the freed bo to be reclaimed and controlled via heap spray, after which xe_dma_buf_move_notify()/xe_bo_evict() operate on attacker-controlled memory, yielding a write/control-flow primitive.\nA:H - Dereferencing the freed bo through the leaked attachment's move_notify callback corrupts kernel state and readily causes an oops/panic; the attachment also constitutes a kernel memory leak."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/xe/xe_dma_buf.c"], "versions": [{"version": "dd08ebf6c3525a7ea2186e636df064ea47281987", "lessThan": "d394669e194936d7ce15284a24a5ae334c4c5b74", "status": "affected", "versionType": "git"}, {"version": "dd08ebf6c3525a7ea2186e636df064ea47281987", "lessThan": "0afa8b1ef582ecf6fb04097fd356f8741e5005ed", "status": "affected", "versionType": "git"}, {"version": "dd08ebf6c3525a7ea2186e636df064ea47281987", "lessThan": "eea1e10f8d99c0f04deef707c99705b94bba3b78", "status": "affected", "versionType": "git"}, {"version": "dd08ebf6c3525a7ea2186e636df064ea47281987", "lessThan": "111ab678471bf1f90d078d5513bb086b70596c3c", "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/xe/xe_dma_buf.c"], "versions": [{"version": "6.8", "status": "affected"}, {"version": "0", "lessThan": "6.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.90", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.32", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.9", "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": "6.8", "versionEndExcluding": "6.12.90"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.18.32"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "7.0.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d394669e194936d7ce15284a24a5ae334c4c5b74"}, {"url": "https://git.kernel.org/stable/c/0afa8b1ef582ecf6fb04097fd356f8741e5005ed"}, {"url": "https://git.kernel.org/stable/c/eea1e10f8d99c0f04deef707c99705b94bba3b78"}, {"url": "https://git.kernel.org/stable/c/111ab678471bf1f90d078d5513bb086b70596c3c"}], "title": "drm/xe: Fix dma-buf attachment leak in xe_gem_prime_import()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-46201", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T15:21:05.797214Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-772", "description": "CWE-772 Missing Release of Resource after Effective Lifetime"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T19:36:54.904Z"}}]}}

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There is no network path.\nAC:L - The leak/UAF triggers when xe_dma_buf_init_obj() fails (ENOMEM in bo creation), a condition the attacker can induce via memory pressure and unlimited retries; per the higher-severity rule this is Low.\nPR:L - The PRIME_FD_TO_HANDLE ioctl is DRM_RENDER_ALLOW and the xe driver exposes DRIVER_RENDER render nodes, so any unprivileged local user with render-node access can trigger it. No real root is required.\nUI:N - The attacker performs the prime-import ioctl directly; no victim action is needed.\nS:U - The dangling attachment and freed bo are kernel-internal to the GPU/dma-buf subsystem; the impact stays within the kernel's security authority.\nC:H - The leaked attachment leaves a dangling importer_priv to the freed bo; via the exporter's move_notify path the freed (reallocatable) object is dereferenced, enabling disclosure of attacker-influenced freed-object contents (UAF).\nI:H - The use-after-free allows the freed bo to be reclaimed and controlled via heap spray, after which xe_dma_buf_move_notify()/xe_bo_evict() operate on attacker-controlled memory, yielding a write/control-flow primitive.\nA:H - Dereferencing the freed bo through the leaked attachment's move_notify callback corrupts kernel state and readily causes an oops/panic; the attachment also constitutes a kernel memory leak."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "dd08ebf6c3525a7ea2186e636df064ea47281987", "lessThan": "d394669e194936d7ce15284a24a5ae334c4c5b74", "versionType": "git"}, {"status": "affected", "version": "dd08ebf6c3525a7ea2186e636df064ea47281987", "lessThan": "0afa8b1ef582ecf6fb04097fd356f8741e5005ed", "versionType": "git"}, {"status": "affected", "version": "dd08ebf6c3525a7ea2186e636df064ea47281987", "lessThan": "eea1e10f8d99c0f04deef707c99705b94bba3b78", "versionType": "git"}, {"status": "affected", "version": "dd08ebf6c3525a7ea2186e636df064ea47281987", "lessThan": "111ab678471bf1f90d078d5513bb086b70596c3c", "versionType": "git"}], "programFiles": ["drivers/gpu/drm/xe/xe_dma_buf.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.8"}, {"status": "unaffected", "version": "0", "lessThan": "6.8", "versionType": "semver"}, {"status": "unaffected", "version": "6.12.90", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.32", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.9", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/gpu/drm/xe/xe_dma_buf.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/d394669e194936d7ce15284a24a5ae334c4c5b74"}, {"url": "https://git.kernel.org/stable/c/0afa8b1ef582ecf6fb04097fd356f8741e5005ed"}, {"url": "https://git.kernel.org/stable/c/eea1e10f8d99c0f04deef707c99705b94bba3b78"}, {"url": "https://git.kernel.org/stable/c/111ab678471bf1f90d078d5513bb086b70596c3c"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Fix dma-buf attachment leak in xe_gem_prime_import()\n\nWhen xe_dma_buf_init_obj() fails, the attachment from\ndma_buf_dynamic_attach() is not detached. Add dma_buf_detach() before\nreturning the error. Note: we cannot use goto out_err here because\nxe_dma_buf_init_obj() already frees bo on failure, and out_err would\ndouble-free it.\n\n(cherry picked from commit a828eb185aac41800df8eae4b60501ccc0dbbe51)"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.90", "versionStartIncluding": "6.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.32", "versionStartIncluding": "6.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0.9", "versionStartIncluding": "6.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1", "versionStartIncluding": "6.8"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:30:25.116Z"}}}, "cveMetadata": {"cveId": "CVE-2026-46201", "state": "PUBLISHED", "dateUpdated": "2026-10-16T15:31:07.817Z", "dateReserved": "2026-05-13T15:03:33.104Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-05-28T09:40:17.964Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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{"bugzilla": {"description": "kernel: drm/xe: Fix dma-buf attachment leak in xe_gem_prime_import()", "id": "2482534", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482534"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's `drm/xe` subsystem. When handling dma-buf attachments, a resource leak occurs if the initialization of a dma-buf object fails, as the attachment is not properly detached. This oversight can lead to resource exhaustion, potentially allowing a local attacker to cause a Denial of Service (DoS) by making the system unstable or unresponsive."], "name": "CVE-2026-46201", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-46201\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-46201\nhttps://lore.kernel.org/linux-cve-announce/2026052832-CVE-2026-46201-2126@gregkh/T"], "threat_severity": "Low"}

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