CVE-2026-23317

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This was changed to another lookup function that\nreturned an error code with the pointer becoming an out parameter.\n\nThe error path when the lookup failed was not changed to reflect this\nchange and the code continued to return the PTR_ERR of the now\nuninitialized pointer. This could cause the vmw_translate_ptr functions\nto return success when they actually failed causing further uninitialized\nand OOB accesses."}], "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 vulnerability is triggered via the DRM execbuf ioctl (DRM_IOCTL_VMW_EXECBUF) on the vmwgfx render node (/dev/dri/renderD*), requiring local system access.\nAC:L - The attacker reliably triggers the bug by submitting a command buffer with an invalid buffer handle. With CONFIG_INIT_STACK_ALL_ZERO (default on most modern distros), the uninitialized vmw_bo is deterministically NULL, making PTR_ERR return 0 every time.\nPR:L - The ioctl is marked DRM_RENDER_ALLOW, meaning any user with access to the render node can trigger it. Render nodes are typically accessible to unprivileged local users on desktop/VM systems.\nUI:N - No user interaction is required; the attacker directly issues the ioctl with a crafted command buffer.\nS:U - The vulnerability affects the kernel within its own security authority. While this is in a VM guest driver, exploitation stays within the guest kernel boundary.\nC:H - The uninitialized pointer dereference leads to OOB memory accesses, potentially reading arbitrary kernel memory contents.\nI:H - The uninitialized pointer is passed to vmw_bo_placement_set and vmw_validation_add_bo which perform write operations, enabling memory corruption that could be leveraged for code execution.\nA:H - Dereferencing an uninitialized or invalid pointer in kernel context causes a kernel oops/crash, confirmed by the commit message describing \"uninitialized and OOB accesses.\""}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c"], "versions": [{"version": "7ac9578e45b20e3f3c0c8eb71f5417a499a7226a", "lessThan": "ce3a5cf139787c186d5d54336107298cacaad2b9", "status": "affected", "versionType": "git"}, {"version": "a309c7194e8a2f8bd4539b9449917913f6c2cd50", "lessThan": "7e55d0788b362c93660b80cc5603031bbbdefa98", "status": "affected", "versionType": "git"}, {"version": "a309c7194e8a2f8bd4539b9449917913f6c2cd50", "lessThan": "36cb28b6d303a81e6ed4536017090e85e0143e42", "status": "affected", "versionType": "git"}, {"version": "a309c7194e8a2f8bd4539b9449917913f6c2cd50", "lessThan": "531f45589787799aa81b63e1e1f8e71db5d93dd1", "status": "affected", "versionType": "git"}, {"version": "a309c7194e8a2f8bd4539b9449917913f6c2cd50", "lessThan": "149f028772fa2879d9316b924ce948a6a0877e45", "status": "affected", "versionType": "git"}, {"version": "a309c7194e8a2f8bd4539b9449917913f6c2cd50", "lessThan": "5023ca80f9589295cb60735016e39fc5cc714243", "status": "affected", "versionType": "git"}, {"version": "6.1.7", "lessThan": "6.1.167", "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/vmwgfx/vmwgfx_execbuf.c"], "versions": [{"version": "6.2", "status": "affected"}, {"version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.167", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.130", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.77", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.17", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.7", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "6.1.7", "versionEndExcluding": "6.1.167"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.6.130"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.12.77"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.18.17"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.19.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ce3a5cf139787c186d5d54336107298cacaad2b9"}, {"url": "https://git.kernel.org/stable/c/7e55d0788b362c93660b80cc5603031bbbdefa98"}, {"url": "https://git.kernel.org/stable/c/36cb28b6d303a81e6ed4536017090e85e0143e42"}, {"url": "https://git.kernel.org/stable/c/531f45589787799aa81b63e1e1f8e71db5d93dd1"}, {"url": "https://git.kernel.org/stable/c/149f028772fa2879d9316b924ce948a6a0877e45"}, {"url": "https://git.kernel.org/stable/c/5023ca80f9589295cb60735016e39fc5cc714243"}], "title": "drm/vmwgfx: Return the correct value in vmw_translate_ptr functions", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"x_adpType": "supplier", "providerMetadata": {"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-10-15T01:13:59.345Z"}, "affected": [{"vendor": "Siemens", "product": "SIMATIC S7-1500 TM MFP - 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While this is in a VM guest driver, exploitation stays within the guest kernel boundary.\nC:H - The uninitialized pointer dereference leads to OOB memory accesses, potentially reading arbitrary kernel memory contents.\nI:H - The uninitialized pointer is passed to vmw_bo_placement_set and vmw_validation_add_bo which perform write operations, enabling memory corruption that could be leveraged for code execution.\nA:H - Dereferencing an uninitialized or invalid pointer in kernel context causes a kernel oops/crash, confirmed by the commit message describing \"uninitialized and OOB accesses.\""}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c"], "versions": [{"version": "7ac9578e45b20e3f3c0c8eb71f5417a499a7226a", "lessThan": "ce3a5cf139787c186d5d54336107298cacaad2b9", "status": "affected", "versionType": "git"}, {"version": "a309c7194e8a2f8bd4539b9449917913f6c2cd50", "lessThan": "7e55d0788b362c93660b80cc5603031bbbdefa98", "status": "affected", "versionType": "git"}, {"version": "a309c7194e8a2f8bd4539b9449917913f6c2cd50", "lessThan": "36cb28b6d303a81e6ed4536017090e85e0143e42", "status": "affected", "versionType": "git"}, {"version": "a309c7194e8a2f8bd4539b9449917913f6c2cd50", "lessThan": "531f45589787799aa81b63e1e1f8e71db5d93dd1", "status": "affected", "versionType": "git"}, {"version": "a309c7194e8a2f8bd4539b9449917913f6c2cd50", "lessThan": "149f028772fa2879d9316b924ce948a6a0877e45", "status": "affected", "versionType": "git"}, {"version": "a309c7194e8a2f8bd4539b9449917913f6c2cd50", "lessThan": "5023ca80f9589295cb60735016e39fc5cc714243", "status": "affected", "versionType": "git"}, {"version": "6.1.7", "lessThan": "6.1.167", "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/vmwgfx/vmwgfx_execbuf.c"], "versions": [{"version": "6.2", "status": "affected"}, {"version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.167", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.130", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.77", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.17", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.7", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "6.1.7", "versionEndExcluding": "6.1.167"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.6.130"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.12.77"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.18.17"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.19.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ce3a5cf139787c186d5d54336107298cacaad2b9"}, {"url": "https://git.kernel.org/stable/c/7e55d0788b362c93660b80cc5603031bbbdefa98"}, {"url": "https://git.kernel.org/stable/c/36cb28b6d303a81e6ed4536017090e85e0143e42"}, {"url": "https://git.kernel.org/stable/c/531f45589787799aa81b63e1e1f8e71db5d93dd1"}, {"url": "https://git.kernel.org/stable/c/149f028772fa2879d9316b924ce948a6a0877e45"}, {"url": "https://git.kernel.org/stable/c/5023ca80f9589295cb60735016e39fc5cc714243"}], "title": "drm/vmwgfx: Return the correct value in vmw_translate_ptr functions", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"x_adpType": "supplier", "providerMetadata": {"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-10-15T01:13:59.345Z"}, "affected": [{"vendor": "Siemens", "product": "SIMATIC S7-1500 TM MFP - 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This was changed to another lookup function that\nreturned an error code with the pointer becoming an out parameter.\n\nThe error path when the lookup failed was not changed to reflect this\nchange and the code continued to return the PTR_ERR of the now\nuninitialized pointer. This could cause the vmw_translate_ptr functions\nto return success when they actually failed causing further uninitialized\nand OOB accesses."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/vmwgfx: Devolver el valor correcto en las funciones vmw_translate_ptr\n\nAntes de las correcciones referenciadas, estas funciones utilizaban una funci\u00f3n de b\u00fasqueda que devolv\u00eda un puntero. Esto fue cambiado a otra funci\u00f3n de b\u00fasqueda que devolv\u00eda un c\u00f3digo de error con el puntero convirti\u00e9ndose en un par\u00e1metro de salida.\n\nLa ruta de error cuando la b\u00fasqueda fallaba no fue cambiada para reflejar este cambio y el c\u00f3digo continu\u00f3 devolviendo el PTR_ERR del puntero ahora no inicializado. Esto podr\u00eda causar que las funciones vmw_translate_ptr devolvieran \u00e9xito cuando en realidad fallaron, causando accesos no inicializados y OOB adicionales."}], "id": "CVE-2026-23317", "lastModified": "2026-10-19T19:17:45.500", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-23317", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:07:24.083139Z", "version": "2.0.3"}}]}, "published": "2026-03-25T11:16:28.220", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/149f028772fa2879d9316b924ce948a6a0877e45"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/36cb28b6d303a81e6ed4536017090e85e0143e42"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5023ca80f9589295cb60735016e39fc5cc714243"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/531f45589787799aa81b63e1e1f8e71db5d93dd1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7e55d0788b362c93660b80cc5603031bbbdefa98"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ce3a5cf139787c186d5d54336107298cacaad2b9"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-908"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-457"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: drm/vmwgfx: Return the correct value in vmw_translate_ptr functions", "id": "2451188", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451188"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L", "status": "draft"}, "cwe": "CWE-390", "details": ["A flaw was found in the `drm/vmwgfx` component of the Linux kernel. Incorrect error handling in the `vmw_translate_ptr` functions could cause them to return a success status even when an internal lookup operation failed. This could lead to the use of uninitialized pointers and out-of-bounds (OOB) memory accesses, potentially resulting in system instability or information disclosure."], "name": "CVE-2026-23317", "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": "Out of support scope", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "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": "2026-03-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-23317\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-23317\nhttps://lore.kernel.org/linux-cve-announce/2026032530-CVE-2026-23317-0e9e@gregkh/T"], "statement": "This flaw affects VMware graphics (vmwgfx) driver used in VMware virtual machines. The error handling regression causes failed lookups to incorrectly return success, leading to use of uninitialized pointers and potential OOB memory accesses. This affects systems running Linux guests in VMware environments with 3D acceleration enabled.", "threat_severity": "Moderate"}

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