CVE-2025-40069

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-40069", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.159Z", "datePublished": "2025-10-28T11:48:38.232Z", "dateUpdated": "2026-08-05T12:07:32.509Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:07:32.509Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm: Fix obj leak in VM_BIND error path\n\nIf we fail a handle-lookup part way thru, we need to drop the already\nobtained obj references.\n\nPatchwork: https://patchwork.freedesktop.org/patch/669784/"}], "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 - Reached only through the `DRM_IOCTL_MSM_VM_BIND` ioctl on the local msm DRM device/render node, which requires an open file descriptor on `/dev/dri/renderD*`. There is no remote or adjacent-network path to this code.\nAC:L - Triggering is fully deterministic and race-free \u2014 a single VM_BIND ioctl with one MSM_VM_BIND_OP_MAP op carrying a handle not present in `file->object_idr` (any large value, since IDR ids are allocated from 1 upward) drives the error path every time. All other validation (page-aligned iova/range, VA range) is trivially satisfied using values queryable via MSM_PARAM_VA_START/VA_SIZE.\nPR:L - Every ioctl on the path (MSM_SET_PARAM, MSM_SUBMITQUEUE_NEW, MSM_VM_BIND) is marked `DRM_RENDER_ALLOW`, so no DRM master, authentication, or capability is needed, and `MSM_PARAM_EN_VM_BIND` has no `capable()` gate. Any unprivileged process that can open the render node \u2014 including an Android app, a Chrome GPU sandbox process, or a desktop user on a Snapdragon laptop \u2014 qualifies.\nUI:N - The attacker issues the ioctls entirely from their own process; no victim action, no file to open, no device to plug in is involved.\nS:U - The corruption and any resulting escalation stay within the kernel's own security authority on the same host, with no crossing of a hypervisor, IOMMU, or other separate security scope.\nC:H - The union-aliased handle is dereferenced as a `struct drm_gem_object *` at an address the attacker fully controls; if that access succeeds, `drm_gem_object_free()` proceeds to read `obj->funcs->free` from attacker-shaped memory, giving a memory-corruption primitive that can be leveraged into arbitrary kernel memory disclosure.\nI:H - `kref_put()` performs an atomic read-modify-write (decrement) at the attacker-supplied address, and reaching zero funnels into an indirect call through a function pointer read from that same attacker-influenced memory \u2014 a write plus control-flow-hijack primitive, not a mere refcount imbalance.\nA:H - In the common case the wild pointer lands in an unmapped or PAN/SMAP-protected page and the `refcount_dec_and_test()` faults, producing an immediate kernel oops that kills the task and leaks the job/submitqueue state; an unprivileged user can trigger this at will, and with `panic_on_oops` (common on Android and hardened builds) it is a full system panic."}]}], "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_vma.c"], "versions": [{"version": "2e6a8a1fe2b262a6dfd0a65041fcd830ee1e7143", "lessThan": "2b512909a291a964cfcf6b58de13256ab3e848c4", "status": "affected", "versionType": "git"}, {"version": "2e6a8a1fe2b262a6dfd0a65041fcd830ee1e7143", "lessThan": "278f8904434aa96055e793936b5977c010549e28", "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_vma.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.3", "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": "6.17.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.18"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/2b512909a291a964cfcf6b58de13256ab3e848c4"}, {"url": "https://git.kernel.org/stable/c/278f8904434aa96055e793936b5977c010549e28"}], "title": "drm/msm: Fix obj leak in VM_BIND error path", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/msm/msm_gem_vma.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "2b512909a291a964cfcf6b58de13256ab3e848c4", "status": "affected", "version": "2e6a8a1fe2b262a6dfd0a65041fcd830ee1e7143", "versionType": "git"}, {"lessThan": "278f8904434aa96055e793936b5977c010549e28", "status": "affected", "version": "2e6a8a1fe2b262a6dfd0a65041fcd830ee1e7143", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/msm/msm_gem_vma.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": "6.17.3", "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: Fix obj leak in VM_BIND error path\n\nIf we fail a handle-lookup part way thru, we need to drop the already\nobtained obj references.\n\nPatchwork: https://patchwork.freedesktop.org/patch/669784/"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/msm: Corrige la fuga de obj en la ruta de error de VM_BIND\n\nSi falla una b\u00fasqueda de manejador a mitad de camino, necesitamos descartar las referencias de obj ya obtenidas.\n\nPatchwork: https://patchwork.freedesktop.org/patch/669784/"}], "id": "CVE-2025-40069", "lastModified": "2026-10-19T21:10:00.160", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2025-10-28T12:15:41.387", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/278f8904434aa96055e793936b5977c010549e28"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2b512909a291a964cfcf6b58de13256ab3e848c4"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: drm/msm: Fix obj leak in VM_BIND error path", "id": "2406764", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2406764"}, "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"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-40069", "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": "2025-10-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40069\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40069\nhttps://lore.kernel.org/linux-cve-announce/2025102818-CVE-2025-40069-ebb6@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-10-29T10:58:18.392862+00:00", "updated": "2025-10-29T10:58:18.392888+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}