CVE-2019-25160

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Both\nerrors are embarassingly simple, and the fixes are straightforward.\n\nAs a FYI for anyone backporting this patch to kernels prior to v4.8,\nyou'll want to apply the netlbl_bitmap_walk() patch to\ncipso_v4_bitmap_walk() as netlbl_bitmap_walk() doesn't exist before\nLinux v4.8."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "baseScore": 9.1, "baseSeverity": "CRITICAL"}, "scenarios": [{"lang": "en", "value": "AV:N - Crafted IPv4 packets with CIPSO options reach the bug via ip_rcv_finish_core -> ip_rcv_options -> ip_options_compile -> cipso_v4_validate -> cipso_v4_map_lvl_valid/netlbl_bitmap_walk, with no local access required. This is a net/ stack path processing remote peer packet data.\nAC:L - With a CIPSO MAP_TRANS DOI configured (the labeled-networking deployment this subsystem targets), an attacker reliably triggers the OOB by setting an out-of-range level byte or category bitmap; DOI values are probeable via ICMP parameter-problem offsets. No race or other attacker-uncontrollable condition is required.\nPR:N - Incoming skbs take the CIPSO path in __ip_options_compile without CAP_NET_RAW or any authentication; the privilege check applies only when skb is NULL (setsockopt). A remote unauthenticated sender can trigger the vulnerable validation.\nUI:N - Exploitation requires only sending crafted IP packets to the host; no victim user action is needed.\nS:U - Impact is confined to the receiving kernel's NetLabel/CIPSO processing and memory; there is no VM escape, IOMMU bypass, or other cross-authority boundary crossing.\nC:H - cipso_v4_map_lvl_valid indexes an attacker-controlled u8 into the DOI level array without a size check, enabling a large kernel heap OOB read (up to ~1KB when cipso_size is small). Per guidance, unbounded OOB reads score Confidentiality High.\nI:N - Both defects are out-of-bounds reads with no write, UAF, or control-flow corruption primitive; later map_lvl_ntoh still bounds-checks before applying labels, so there is no integrity impact.\nA:H - The OOB reads can fault on unmapped pages and cause a kernel oops/panic, and a remote attacker can trigger them repeatedly for DoS against CIPSO-enabled hosts."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv4/cipso_ipv4.c", "net/netlabel/netlabel_kapi.c"], "versions": [{"version": "446fda4f26822b2d42ab3396aafcedf38a9ff2b6", "lessThan": "97bc3683c24999ee621d847c9348c75d2fe86272", "status": "affected", "versionType": "git"}, {"version": "446fda4f26822b2d42ab3396aafcedf38a9ff2b6", "lessThan": "c61d01faa5550e06794dcf86125ccd325bfad950", "status": "affected", "versionType": "git"}, 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"versionType": "semver"}, {"version": "5.0", "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": "2.6.19", "versionEndExcluding": "3.16.66"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "3.18.137"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "4.4.177"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "4.9.163"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "4.14.106"}, {"vulnerable": true, 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This is a net/ stack path processing remote peer packet data.\nAC:L - With a CIPSO MAP_TRANS DOI configured (the labeled-networking deployment this subsystem targets), an attacker reliably triggers the OOB by setting an out-of-range level byte or category bitmap; DOI values are probeable via ICMP parameter-problem offsets. No race or other attacker-uncontrollable condition is required.\nPR:N - Incoming skbs take the CIPSO path in __ip_options_compile without CAP_NET_RAW or any authentication; the privilege check applies only when skb is NULL (setsockopt). A remote unauthenticated sender can trigger the vulnerable validation.\nUI:N - Exploitation requires only sending crafted IP packets to the host; no victim user action is needed.\nS:U - Impact is confined to the receiving kernel's NetLabel/CIPSO processing and memory; there is no VM escape, IOMMU bypass, or other cross-authority boundary crossing.\nC:H - cipso_v4_map_lvl_valid indexes an attacker-controlled u8 into the DOI level array without a size check, enabling a large kernel heap OOB read (up to ~1KB when cipso_size is small). Per guidance, unbounded OOB reads score Confidentiality High.\nI:N - Both defects are out-of-bounds reads with no write, UAF, or control-flow corruption primitive; later map_lvl_ntoh still bounds-checks before applying labels, so there is no integrity impact.\nA:H - The OOB reads can fault on unmapped pages and cause a kernel oops/panic, and a remote attacker can trigger them repeatedly for DoS against CIPSO-enabled hosts."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "446fda4f26822b2d42ab3396aafcedf38a9ff2b6", "lessThan": "97bc3683c24999ee621d847c9348c75d2fe86272", "versionType": "git"}, {"status": "affected", "version": "446fda4f26822b2d42ab3396aafcedf38a9ff2b6", "lessThan": "c61d01faa5550e06794dcf86125ccd325bfad950", "versionType": "git"}, {"status": "affected", "version": "446fda4f26822b2d42ab3396aafcedf38a9ff2b6", "lessThan": "dc18101f95fa6e815f426316b8b9a5cee28a334e", "versionType": "git"}, {"status": "affected", "version": "446fda4f26822b2d42ab3396aafcedf38a9ff2b6", "lessThan": "1c973f9c7cc2b3caae93192fdc8ecb3f0b4ac000", "versionType": "git"}, {"status": "affected", "version": "446fda4f26822b2d42ab3396aafcedf38a9ff2b6", "lessThan": "fcfe700acdc1c72eab231300e82b962bac2b2b2c", "versionType": "git"}, {"status": "affected", "version": "446fda4f26822b2d42ab3396aafcedf38a9ff2b6", "lessThan": "e3713abc4248aa6bcc11173d754c418b02a62cbb", "versionType": "git"}, {"status": "affected", "version": "446fda4f26822b2d42ab3396aafcedf38a9ff2b6", "lessThan": "fbf9578919d6c91100ec63acf2cba641383f6c78", "versionType": "git"}, {"status": "affected", "version": "446fda4f26822b2d42ab3396aafcedf38a9ff2b6", "lessThan": "5578de4834fe0f2a34fedc7374be691443396d1f", "versionType": "git"}], "programFiles": ["net/ipv4/cipso_ipv4.c", "net/netlabel/netlabel_kapi.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.19"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.19", "versionType": "semver"}, {"status": "unaffected", "version": "3.16.66", "versionType": "semver", "lessThanOrEqual": "3.16.*"}, {"status": "unaffected", "version": "3.18.137", "versionType": "semver", "lessThanOrEqual": "3.18.*"}, {"status": "unaffected", "version": "4.4.177", "versionType": "semver", "lessThanOrEqual": "4.4.*"}, {"status": "unaffected", "version": "4.9.163", "versionType": "semver", "lessThanOrEqual": "4.9.*"}, {"status": "unaffected", "version": "4.14.106", "versionType": "semver", "lessThanOrEqual": "4.14.*"}, {"status": "unaffected", "version": "4.19.28", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "4.20.15", "versionType": "semver", "lessThanOrEqual": "4.20.*"}, {"status": "unaffected", "version": "5.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/ipv4/cipso_ipv4.c", "net/netlabel/netlabel_kapi.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/97bc3683c24999ee621d847c9348c75d2fe86272"}, {"url": "https://git.kernel.org/stable/c/c61d01faa5550e06794dcf86125ccd325bfad950"}, {"url": "https://git.kernel.org/stable/c/dc18101f95fa6e815f426316b8b9a5cee28a334e"}, {"url": "https://git.kernel.org/stable/c/1c973f9c7cc2b3caae93192fdc8ecb3f0b4ac000"}, {"url": "https://git.kernel.org/stable/c/fcfe700acdc1c72eab231300e82b962bac2b2b2c"}, {"url": "https://git.kernel.org/stable/c/e3713abc4248aa6bcc11173d754c418b02a62cbb"}, {"url": "https://git.kernel.org/stable/c/fbf9578919d6c91100ec63acf2cba641383f6c78"}, {"url": "https://git.kernel.org/stable/c/5578de4834fe0f2a34fedc7374be691443396d1f"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetlabel: fix out-of-bounds memory accesses\n\nThere are two array out-of-bounds memory accesses, one in\ncipso_v4_map_lvl_valid(), the other in netlbl_bitmap_walk(). Both\nerrors are embarassingly simple, and the fixes are straightforward.\n\nAs a FYI for anyone backporting this patch to kernels prior to v4.8,\nyou'll want to apply the netlbl_bitmap_walk() patch to\ncipso_v4_bitmap_walk() as netlbl_bitmap_walk() doesn't exist before\nLinux v4.8."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "3.16.66", "versionStartIncluding": "2.6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "3.18.137", "versionStartIncluding": "2.6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.4.177", "versionStartIncluding": "2.6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.9.163", "versionStartIncluding": "2.6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.14.106", "versionStartIncluding": "2.6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.28", "versionStartIncluding": "2.6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.20.15", "versionStartIncluding": "2.6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.0", "versionStartIncluding": "2.6.19"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:43:45.278Z"}}}, "cveMetadata": {"cveId": "CVE-2019-25160", "state": "PUBLISHED", "dateUpdated": "2026-08-05T08:43:45.278Z", "dateReserved": "2024-02-26T17:07:20.465Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-02-26T17:20:19.490Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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Both\nerrors are embarassingly simple, and the fixes are straightforward.\n\nAs a FYI for anyone backporting this patch to kernels prior to v4.8,\nyou'll want to apply the netlbl_bitmap_walk() patch to\ncipso_v4_bitmap_walk() as netlbl_bitmap_walk() doesn't exist before\nLinux v4.8."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnetlabel: correcci\u00f3n de accesos a memoria fuera de l\u00edmites\n\nHay dos accesos a memoria fuera de l\u00edmites de array, uno en cipso_v4_map_lvl_valid(), el otro en netlbl_bitmap_walk(). Ambos errores son vergonzosamente simples, y las correcciones son directas.\n\nComo informaci\u00f3n para cualquiera que haga un 'backport' de este parche a kernels anteriores a la v4.8, querr\u00e1n aplicar el parche de netlbl_bitmap_walk() a cipso_v4_bitmap_walk() ya que netlbl_bitmap_walk() no existe antes de Linux v4.8."}], "id": "CVE-2019-25160", "lastModified": "2026-08-04T10:16:33.017", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2019-25160", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-02-27T16:02:54.112450Z", "version": "2.0.3"}}]}, "published": "2024-02-26T18:15:06.930", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1c973f9c7cc2b3caae93192fdc8ecb3f0b4ac000"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5578de4834fe0f2a34fedc7374be691443396d1f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/97bc3683c24999ee621d847c9348c75d2fe86272"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c61d01faa5550e06794dcf86125ccd325bfad950"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dc18101f95fa6e815f426316b8b9a5cee28a334e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e3713abc4248aa6bcc11173d754c418b02a62cbb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fbf9578919d6c91100ec63acf2cba641383f6c78"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fcfe700acdc1c72eab231300e82b962bac2b2b2c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1c973f9c7cc2b3caae93192fdc8ecb3f0b4ac000"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5578de4834fe0f2a34fedc7374be691443396d1f"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/97bc3683c24999ee621d847c9348c75d2fe86272"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c61d01faa5550e06794dcf86125ccd325bfad950"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dc18101f95fa6e815f426316b8b9a5cee28a334e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e3713abc4248aa6bcc11173d754c418b02a62cbb"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fbf9578919d6c91100ec63acf2cba641383f6c78"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fcfe700acdc1c72eab231300e82b962bac2b2b2c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2019:3517", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-147.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2019-11-05T00:00:00Z"}], "bugzilla": {"description": "kernel: out-of-bounds memory accesses in netlabel", "id": "2266290", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2266290"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "status": "verified"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnetlabel: fix out-of-bounds memory accesses\nThere are two array out-of-bounds memory accesses, one in\ncipso_v4_map_lvl_valid(), the other in netlbl_bitmap_walk(). Both\nerrors are embarassingly simple, and the fixes are straightforward.\nAs a FYI for anyone backporting this patch to kernels prior to v4.8,\nyou'll want to apply the netlbl_bitmap_walk() patch to\ncipso_v4_bitmap_walk() as netlbl_bitmap_walk() doesn't exist before\nLinux v4.8.", "A vulnerability was found in the Linux kernel. An out-of-bounds (OOB) memory access flaw exists in the netlabel driver module. This may lead to a crash."], "name": "CVE-2019-25160", "package_state": [{"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": "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": "2024-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-25160\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-25160"], "statement": "Red Hat has protection mechanisms in place against buffer overflows, such as FORTIFY_SOURCE, Position Independent Executables or Stack Smashing Protection.", "threat_severity": "Moderate"}

{}