CVE-2025-68314

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-68314", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-16T14:48:05.295Z", "datePublished": "2025-12-16T15:39:44.791Z", "dateUpdated": "2026-08-05T12:10:48.766Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:10:48.766Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm: make sure last_fence is always updated\n\nUpdate last_fence in the vm-bind path instead of kernel managed path.\n\nlast_fence is used to wait for work to finish in vm_bind contexts but not\nused for kernel managed contexts.\n\nThis fixes a bug where last_fence is not waited on context close leading\nto faults as resources are freed while in use.\n\nPatchwork: https://patchwork.freedesktop.org/patch/680080/"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerability is reached through DRM MSM render-node ioctls for VM_BIND setup, GPU submission, and context closure, requiring local device access.\nAC:L - The attacker controls the mappings, command stream, workload duration, and close timing; the missing VM_BIND fence update is deterministic and requires no uncontrollable race.\nPR:L - The required ioctls are DRM_RENDER_ALLOW and have no capability check, so any ordinary user granted render-node access can trigger the flaw.\nUI:N - Exploitation requires only attacker-controlled ioctl and close operations, with no victim action.\nS:C - In-flight GPU DMA can survive teardown of its per-process VM mappings and reach recycled pages belonging to the kernel or another client, crossing the GPU/IOMMU isolation boundary.\nC:H - Mapped GEM pages can be released while attacker-programmed GPU reads remain in flight. Reallocation of those pages can expose kernel or other-process memory through a retained shared destination.\nI:H - In-flight GPU writes can target freed pages after they are recycled into kernel or other-client allocations, enabling potentially arbitrary memory corruption.\nA:H - The premature unmapping causes GPU translation faults and hangs that require shared-GPU recovery or reset. An unprivileged attacker can repeat the trigger, potentially making graphics-dependent systems unavailable."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/msm/msm_gem_submit.c"], "versions": [{"version": "92395af63a9958615edfa9d4ef1ea72c92a00410", "lessThan": "8ee817ceafba266d9c6f3a09babd2ac7441d9a2b", "status": "affected", "versionType": "git"}, {"version": "92395af63a9958615edfa9d4ef1ea72c92a00410", "lessThan": "86404a9e3013d814a772ac407573be5d3cd4ee0d", "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/msm/msm_gem_submit.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.8", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18", "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": "6.17", "versionEndExcluding": "6.17.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.18"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8ee817ceafba266d9c6f3a09babd2ac7441d9a2b"}, {"url": "https://git.kernel.org/stable/c/86404a9e3013d814a772ac407573be5d3cd4ee0d"}], "title": "drm/msm: make sure last_fence is always updated", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/msm/msm_gem_submit.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "8ee817ceafba266d9c6f3a09babd2ac7441d9a2b", "status": "affected", "version": "92395af63a9958615edfa9d4ef1ea72c92a00410", "versionType": "git"}, {"lessThan": "86404a9e3013d814a772ac407573be5d3cd4ee0d", "status": "affected", "version": "92395af63a9958615edfa9d4ef1ea72c92a00410", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/msm/msm_gem_submit.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.17"}, {"lessThan": "6.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.17.*", "status": "unaffected", "version": "6.17.8", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.18", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm: make sure last_fence is always updated\n\nUpdate last_fence in the vm-bind path instead of kernel managed path.\n\nlast_fence is used to wait for work to finish in vm_bind contexts but not\nused for kernel managed contexts.\n\nThis fixes a bug where last_fence is not waited on context close leading\nto faults as resources are freed while in use.\n\nPatchwork: https://patchwork.freedesktop.org/patch/680080/"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/msm: asegurar que last_fence siempre se actualice\n\nActualizar last_fence en la ruta de vm-bind en lugar de la ruta gestionada por el kernel.\n\nlast_fence se utiliza para esperar a que el trabajo termine en contextos de vm_bind, pero no se utiliza para contextos gestionados por el kernel.\n\nEsto corrige un error donde no se espera a last_fence al cerrar el contexto, lo que lleva a fallos ya que los recursos se liberan mientras est\u00e1n en uso.\n\nPatchwork: https://patchwork.freedesktop.org/patch/680080/"}], "id": "CVE-2025-68314", "lastModified": "2026-10-14T16:10:00.250", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.0, "impactScore": 6.0, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2025-12-16T16:16:10.983", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/86404a9e3013d814a772ac407573be5d3cd4ee0d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8ee817ceafba266d9c6f3a09babd2ac7441d9a2b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: drm/msm: make sure last_fence is always updated", "id": "2422807", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2422807"}, "csaw": false, "details": ["No description is available for this CVE."], "name": "CVE-2025-68314", "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": "2025-12-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-68314\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-68314\nhttps://lore.kernel.org/linux-cve-announce/2025121655-CVE-2025-68314-847b@gregkh/T"]}

{}