CVE-2026-68383

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there is no remote or adjacent-network path into the xe exec-queue lifecycle.\nAC:L - No race is needed \u2014 once __xe_exec_queue_free() kfree()s the queue, sched->name is permanently dangling, so the attacker performs create-queue, export fence, destroy queue, groom the slab, then read, and can retry indefinitely.\nPR:L - XE_EXEC_QUEUE_CREATE/DESTROY, XE_EXEC, SYNCOBJ_EXPORT_SYNC_FILE and SYNC_IOC_FILE_INFO are all DRM_RENDER_ALLOW with no DRM_AUTH or capability gate, so any local user with render-node access (default for desktop sessions, Android/ChromeOS apps, GPU-passthrough containers) qualifies.\nUI:N - The attacker drives the whole sequence inside its own process using its own exec queue and its own exported fence; no victim action or configuration change is required.\nS:U - The use-after-free is on kernel slab memory and its impact stays inside the kernel's own security authority; no VM, IOMMU or hypervisor boundary is crossed.\nC:H - sync_fill_fence_info() strscpy()s from the freed q->name and copy_to_user()s the result, so after reallocating the freed xe_exec_queue slot the attacker reads back kernel heap contents (pointers, residual data) repeatably \u2014 a kernel memory disclosure primitive.\nI:H - This is a use-after-free on a kfree()d slab object whose contents the attacker grooms; the stale pointer is dereferenced as a string by kernel and tracepoint consumers, and UAF of an attacker-controllable slot is leverageable for corruption and control-flow influence.\nA:H - Dereferencing the dangling name pointer after the slab page is returned to the buddy allocator, or scanning for a NUL past the freed object, faults in kernel context and oopses the machine, which any unprivileged render-node user can trigger at will."}]}], "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_guc_exec_queue_types.h", "drivers/gpu/drm/xe/xe_guc_submit.c"], "versions": [{"version": "b17fcce70733c211cb5dabf54f4f9491920b1d92", "lessThan": "eac2839585741e6c1b4af261a0b58bca0d6f5436", "status": "affected", "versionType": "git"}, {"version": "6bd90e700b4285e6a7541e00f969cab0d696adde", "lessThan": "88c38ff74f8345fcf8852549f94025754019b037", "status": "affected", "versionType": "git"}, {"version": "6bd90e700b4285e6a7541e00f969cab0d696adde", "lessThan": "77fd62412431e8c80ef2ad61466bc76fe425f80a", "status": "affected", "versionType": "git"}, {"version": "6bd90e700b4285e6a7541e00f969cab0d696adde", "lessThan": "299bc6d50b1bed7d1f408391736712f01a0855e2", "status": "affected", "versionType": "git"}, {"version": "ba37807d08bae67de6139346a85650cab5f6145a", "status": "affected", "versionType": "git"}, {"version": "683b0e397dad9f26a42dcacf6f7f545a77ce6c06", "status": "affected", "versionType": "git"}, {"version": "6.12.43", "lessThan": "6.12.114", "status": "affected", "versionType": "semver"}, {"version": "6.15.11", "lessThan": "6.16", "status": "affected", "versionType": "semver"}, {"version": "6.16.2", "lessThan": "6.17", "status": "affected", "versionType": "semver"}]}, {"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_guc_exec_queue_types.h", "drivers/gpu/drm/xe/xe_guc_submit.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.114", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.57", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "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": "6.12.43", "versionEndExcluding": "6.12.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.18.57"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/eac2839585741e6c1b4af261a0b58bca0d6f5436"}, {"url": "https://git.kernel.org/stable/c/88c38ff74f8345fcf8852549f94025754019b037"}, {"url": "https://git.kernel.org/stable/c/77fd62412431e8c80ef2ad61466bc76fe425f80a"}, {"url": "https://git.kernel.org/stable/c/299bc6d50b1bed7d1f408391736712f01a0855e2"}], "title": "drm/xe/guc: Keep scheduler timeline name alive", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-68383", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T15:47:46.046450Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T21:09:07.235Z"}}]}}

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there is no remote or adjacent-network path into the xe exec-queue lifecycle.\nAC:L - No race is needed \u2014 once __xe_exec_queue_free() kfree()s the queue, sched->name is permanently dangling, so the attacker performs create-queue, export fence, destroy queue, groom the slab, then read, and can retry indefinitely.\nPR:L - XE_EXEC_QUEUE_CREATE/DESTROY, XE_EXEC, SYNCOBJ_EXPORT_SYNC_FILE and SYNC_IOC_FILE_INFO are all DRM_RENDER_ALLOW with no DRM_AUTH or capability gate, so any local user with render-node access (default for desktop sessions, Android/ChromeOS apps, GPU-passthrough containers) qualifies.\nUI:N - The attacker drives the whole sequence inside its own process using its own exec queue and its own exported fence; no victim action or configuration change is required.\nS:U - The use-after-free is on kernel slab memory and its impact stays inside the kernel's own security authority; no VM, IOMMU or hypervisor boundary is crossed.\nC:H - sync_fill_fence_info() strscpy()s from the freed q->name and copy_to_user()s the result, so after reallocating the freed xe_exec_queue slot the attacker reads back kernel heap contents (pointers, residual data) repeatably \u2014 a kernel memory disclosure primitive.\nI:H - This is a use-after-free on a kfree()d slab object whose contents the attacker grooms; the stale pointer is dereferenced as a string by kernel and tracepoint consumers, and UAF of an attacker-controllable slot is leverageable for corruption and control-flow influence.\nA:H - Dereferencing the dangling name pointer after the slab page is returned to the buddy allocator, or scanning for a NUL past the freed object, faults in kernel context and oopses the machine, which any unprivileged render-node user can trigger at will."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "b17fcce70733c211cb5dabf54f4f9491920b1d92", "lessThan": "eac2839585741e6c1b4af261a0b58bca0d6f5436", "versionType": "git"}, {"status": "affected", "version": "6bd90e700b4285e6a7541e00f969cab0d696adde", "lessThan": "88c38ff74f8345fcf8852549f94025754019b037", "versionType": "git"}, {"status": "affected", "version": "6bd90e700b4285e6a7541e00f969cab0d696adde", "lessThan": "77fd62412431e8c80ef2ad61466bc76fe425f80a", "versionType": "git"}, {"status": "affected", "version": "6bd90e700b4285e6a7541e00f969cab0d696adde", "lessThan": "299bc6d50b1bed7d1f408391736712f01a0855e2", "versionType": "git"}, {"status": "affected", "version": "ba37807d08bae67de6139346a85650cab5f6145a", "versionType": "git"}, {"status": "affected", "version": "683b0e397dad9f26a42dcacf6f7f545a77ce6c06", "versionType": "git"}, {"status": "affected", "version": "6.12.43", "lessThan": "6.12.114", "versionType": "semver"}, {"status": "affected", "version": "6.15.11", "lessThan": "6.16", "versionType": "semver"}, {"status": "affected", "version": "6.16.2", "lessThan": "6.17", "versionType": "semver"}], "programFiles": ["drivers/gpu/drm/xe/xe_guc_exec_queue_types.h", "drivers/gpu/drm/xe/xe_guc_submit.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.17"}, {"status": "unaffected", "version": "0", "lessThan": "6.17", "versionType": "semver"}, {"status": "unaffected", "version": "6.12.114", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.57", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.6", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/gpu/drm/xe/xe_guc_exec_queue_types.h", "drivers/gpu/drm/xe/xe_guc_submit.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/eac2839585741e6c1b4af261a0b58bca0d6f5436"}, {"url": "https://git.kernel.org/stable/c/88c38ff74f8345fcf8852549f94025754019b037"}, {"url": "https://git.kernel.org/stable/c/77fd62412431e8c80ef2ad61466bc76fe425f80a"}, {"url": "https://git.kernel.org/stable/c/299bc6d50b1bed7d1f408391736712f01a0855e2"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/guc: Keep scheduler timeline name alive\n\nThe scheduler keeps a pointer to the timeline name, but q->name\nis freed with the exec queue while scheduler fences can still\nreference it.\n\nStore the name in struct xe_guc_exec_queue so it shares\nthe scheduler's RCU-deferred lifetime.\n\n(cherry picked from commit 41075f0eb5dcbd3b065d15f15ef7bbe9315188e8)"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.114", "versionStartIncluding": "6.12.43"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.57", "versionStartIncluding": "6.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.6", "versionStartIncluding": "6.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "6.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "6.15.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "6.16.2"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:43:54.357Z"}}}, "cveMetadata": {"cveId": "CVE-2026-68383", "state": "PUBLISHED", "dateUpdated": "2026-10-21T12:43:54.357Z", "dateReserved": "2026-07-30T09:28:09.387Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-10T12:04:02.230Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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{"bugzilla": {"description": "kernel: Linux kernel: Use-after-free vulnerability in drm/xe/guc scheduler", "id": "2513292", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513292"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/xe/guc: Keep scheduler timeline name alive\nThe scheduler keeps a pointer to the timeline name, but q->name\nis freed with the exec queue while scheduler fences can still\nreference it.\nStore the name in struct xe_guc_exec_queue so it shares\nthe scheduler's RCU-deferred lifetime.\n(cherry picked from commit 41075f0eb5dcbd3b065d15f15ef7bbe9315188e8)", "A flaw was found in the Linux kernel's drm/xe/guc component. The scheduler maintains a pointer to a timeline name, but this name is prematurely freed while other parts of the system, such as scheduler fences, can still reference it. This creates a use-after-free vulnerability, where the system attempts to access memory that has already been released. Such an issue can lead to system instability and crashes, potentially resulting in a denial of service."], "name": "CVE-2026-68383", "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"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-10T12:04:02Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68383\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68383\nhttps://git.kernel.org/stable/c/299bc6d50b1bed7d1f408391736712f01a0855e2\nhttps://git.kernel.org/stable/c/77fd62412431e8c80ef2ad61466bc76fe425f80a"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6bd90e700b4285e6a7541e00f969cab0d696adde,77fd62412431e8c80ef2ad61466bc76fe425f80a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6bd90e700b4285e6a7541e00f969cab0d696adde,299bc6d50b1bed7d1f408391736712f01a0855e2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "b17fcce70733c211cb5dabf54f4f9491920b1d92"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "ba37807d08bae67de6139346a85650cab5f6145a"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "683b0e397dad9f26a42dcacf6f7f545a77ce6c06"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.12.43,6.13.0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.15.11,6.16.0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.16.2,6.17.0)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.17"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.17)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc4,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-10T17:15:03.143386+00:00", "updated": "2026-10-20T13:15:14.203530+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}