CVE-2026-64371

{"id": "CVE-2026-64371", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d", "lessThan": "ae1e630bcaac739f625822078edbaea98366930d", "versionType": "git"}, {"status": "affected", "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d", "lessThan": "d54f14655fd7d7b293698a8b6918563c4c0465e7", "versionType": "git"}, {"status": "affected", "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d", "lessThan": "bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9", "versionType": "git"}, {"status": "affected", "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d", "lessThan": "7456ae990a9738962b33146916fabca62ae3d4e0", "versionType": "git"}, {"status": "affected", "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d", "lessThan": "4bfe8c481846cee52473a2f7d7b30ee8e6749fc4", "versionType": "git"}, {"status": "affected", "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d", "lessThan": "f9b4b03ccc9c69bf7f7298d4559906ebea7143b3", "versionType": "git"}, {"status": "affected", "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d", "lessThan": "c1cfd63326f5d09999134e9052c353faf738286e", "versionType": "git"}, {"status": "affected", "version": "f83ce3e6b02d5e48b3a43b001390e2b58820389d", "lessThan": "6650527444dadc63d84aa939d14ecba4fadb2f69", "versionType": "git"}, {"status": "affected", "version": "6b06d6282100dd5aacf7d45443d651a1995bd9c4", "versionType": "git"}, {"status": "affected", "version": "334ed22054b2ec8477e4409e214fc139cf937ef6", "versionType": "git"}, {"status": "affected", "version": "2.6.27.23", "lessThan": "2.6.28", "versionType": "semver"}, {"status": "affected", "version": "2.6.29.3", "lessThan": "2.6.30", "versionType": "semver"}], "programFiles": ["fs/proc/array.c", "fs/proc/base.c", "fs/proc/namespaces.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.30"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.30", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.261", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.212", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.178", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.145", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.97", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.40", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.4", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/proc/array.c", "fs/proc/base.c", "fs/proc/namespaces.c"], "defaultStatus": "affected"}]}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "affectedData": [{"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}]}], "published": "2026-07-25T10:17:20.010", "references": [{"url": "https://git.kernel.org/stable/c/4bfe8c481846cee52473a2f7d7b30ee8e6749fc4", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6650527444dadc63d84aa939d14ecba4fadb2f69", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7456ae990a9738962b33146916fabca62ae3d4e0", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ae1e630bcaac739f625822078edbaea98366930d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c1cfd63326f5d09999134e9052c353faf738286e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d54f14655fd7d7b293698a8b6918563c4c0465e7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f9b4b03ccc9c69bf7f7298d4559906ebea7143b3", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html", "tags": ["Third Party Advisory"], "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nproc: protect ptrace_may_access() with exec_update_lock (part 1)\n\nFix the easy cases where procfs currently calls ptrace_may_access() without\nexec_update_lock protection, where the fix is to simply add the extra lock\nor use mm_access():\n\n - do_task_stat(): grab exec_update_lock\n - proc_pid_wchan(): grab exec_update_lock\n - proc_map_files_lookup(): use mm_access() instead of get_task_mm()\n - proc_map_files_readdir(): use mm_access() instead of get_task_mm()\n - proc_ns_get_link(): grab exec_update_lock\n - proc_ns_readlink(): grab exec_update_lock"}], "lastModified": "2026-09-08T15:23:41.413", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "41099123-1AEE-460F-89CA-4EC446C09108", "versionEndExcluding": "2.6.28", "versionStartIncluding": "2.6.27.23"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FE850330-A382-4C97-A96F-D2D7DB5B8390", "versionEndExcluding": "2.6.30", "versionStartIncluding": "2.6.29.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3CF1F53C-204B-40AB-AEBC-90D579D9AE66", "versionEndExcluding": "5.10.261", "versionStartIncluding": "2.6.30.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": 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