CVE-2026-23457

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-23457", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:37:46.020Z", "datePublished": "2026-04-03T15:15:38.193Z", "dateUpdated": "2026-11-10T12:43:29.967Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:21:56.236Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conntrack_sip: fix Content-Length u32 truncation in sip_help_tcp()\n\nsip_help_tcp() parses the SIP Content-Length header with\nsimple_strtoul(), which returns unsigned long, but stores the result in\nunsigned int clen. On 64-bit systems, values exceeding UINT_MAX are\nsilently truncated before computing the SIP message boundary.\n\nFor example, Content-Length 4294967328 (2^32 + 32) is truncated to 32,\ncausing the parser to miscalculate where the current message ends. The\nloop then treats trailing data in the TCP segment as a second SIP\nmessage and processes it through the SDP parser.\n\nFix this by changing clen to unsigned long to match the return type of\nsimple_strtoul(), and reject Content-Length values that exceed the\nremaining TCP payload length."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H", "baseScore": 8.6, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - The vulnerable parser is reached by TCP SIP packets processed by the in-kernel netfilter SIP conntrack helper on a firewall/NAT/SIP gateway. In a reasonable SIP ALG deployment, a remote peer can deliver the crafted SIP payload over the network.\nAC:L - The attacker controls the SIP TCP stream contents, including the oversized Content-Length and trailing data that is reinterpreted as another SIP/SDP message. No race or condition outside the attacker's control is required once the helper is active.\nPR:N - A remote SIP peer does not need local credentials or kernel privileges to send packets through an already configured SIP conntrack helper. Although local CAP_NET_ADMIN can configure helpers, the highest reasonable deployment is a network-facing SIP gateway where the attacker only sends traffic.\nUI:N - No victim user action is needed after the SIP helper is deployed. The crafted TCP payload is processed automatically on packet traversal.\nS:U - The affected logic is kernel netfilter conntrack/NAT state within the same security authority. This is not a VM escape, IOMMU bypass, or other cross-scope boundary break.\nC:L - The bug does not expose kernel memory, but smuggled SDP can create unintended SIP media expectations that may allow limited otherwise-blocked traffic to protected endpoints. That can expose limited traffic or service responses behind the firewall.\nI:L - The primary impact is limited integrity loss in conntrack/NAT policy state: attacker-controlled trailing bytes can be processed as a separate SIP/SDP message and create or alter expectations. This is not arbitrary kernel memory write or code execution.\nA:H - Crafted traffic can repeatedly drive incorrect SIP helper parsing, packet drops, NAT mangling, and expectation-state pollution for affected SIP flows. In a SIP gateway scenario this can deny call or media setup through the affected subsystem."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/netfilter/nf_conntrack_sip.c"], "versions": [{"version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da", "lessThan": "ed81b6a7012485acdb9c6c80735a0b7d8e5e1873", "status": "affected", "versionType": "git"}, {"version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da", "lessThan": "cd1b7403ec835f8a0b3f1f7e68ac26af2cb1e42f", "status": "affected", "versionType": "git"}, {"version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da", "lessThan": "b75209debb9adab287b3caa982f77788c1e15027", "status": "affected", "versionType": "git"}, {"version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da", "lessThan": "528b4509c9dfc272e2e92d811915e5211650d383", "status": "affected", "versionType": "git"}, {"version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da", "lessThan": "75fcaee5170e7dbbee778927134ef2e9568b4659", "status": "affected", "versionType": "git"}, {"version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da", "lessThan": "865dba58958c3a86786f89a501971ab0e3ec6ba9", "status": "affected", "versionType": "git"}, {"version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da", "lessThan": "d4f17256544cc37f6534a14a27a9dec3540c2015", "status": "affected", "versionType": "git"}, {"version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da", "lessThan": "fbce58e719a17aa215c724473fd5baaa4a8dc57c", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/netfilter/nf_conntrack_sip.c"], "versions": [{"version": "2.6.34", "status": "affected"}, {"version": "0", "lessThan": "2.6.34", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.253", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.203", "lessThanOrEqual": "5.15.*", "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": "6.12.78", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.20", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.10", "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": "2.6.34", "versionEndExcluding": "5.10.253"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "5.15.203"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.1.167"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.6.130"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.12.78"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.18.20"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.19.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ed81b6a7012485acdb9c6c80735a0b7d8e5e1873"}, {"url": "https://git.kernel.org/stable/c/cd1b7403ec835f8a0b3f1f7e68ac26af2cb1e42f"}, {"url": "https://git.kernel.org/stable/c/b75209debb9adab287b3caa982f77788c1e15027"}, {"url": "https://git.kernel.org/stable/c/528b4509c9dfc272e2e92d811915e5211650d383"}, {"url": "https://git.kernel.org/stable/c/75fcaee5170e7dbbee778927134ef2e9568b4659"}, {"url": "https://git.kernel.org/stable/c/865dba58958c3a86786f89a501971ab0e3ec6ba9"}, {"url": "https://git.kernel.org/stable/c/d4f17256544cc37f6534a14a27a9dec3540c2015"}, {"url": "https://git.kernel.org/stable/c/fbce58e719a17aa215c724473fd5baaa4a8dc57c"}], "title": "netfilter: nf_conntrack_sip: fix Content-Length u32 truncation in sip_help_tcp()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"x_adpType": "supplier", 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In a reasonable SIP ALG deployment, a remote peer can deliver the crafted SIP payload over the network.\nAC:L - The attacker controls the SIP TCP stream contents, including the oversized Content-Length and trailing data that is reinterpreted as another SIP/SDP message. No race or condition outside the attacker's control is required once the helper is active.\nPR:N - A remote SIP peer does not need local credentials or kernel privileges to send packets through an already configured SIP conntrack helper. Although local CAP_NET_ADMIN can configure helpers, the highest reasonable deployment is a network-facing SIP gateway where the attacker only sends traffic.\nUI:N - No victim user action is needed after the SIP helper is deployed. The crafted TCP payload is processed automatically on packet traversal.\nS:U - The affected logic is kernel netfilter conntrack/NAT state within the same security authority. This is not a VM escape, IOMMU bypass, or other cross-scope boundary break.\nC:L - The bug does not expose kernel memory, but smuggled SDP can create unintended SIP media expectations that may allow limited otherwise-blocked traffic to protected endpoints. That can expose limited traffic or service responses behind the firewall.\nI:L - The primary impact is limited integrity loss in conntrack/NAT policy state: attacker-controlled trailing bytes can be processed as a separate SIP/SDP message and create or alter expectations. This is not arbitrary kernel memory write or code execution.\nA:H - Crafted traffic can repeatedly drive incorrect SIP helper parsing, packet drops, NAT mangling, and expectation-state pollution for affected SIP flows. In a SIP gateway scenario this can deny call or media setup through the affected subsystem."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da", "lessThan": "ed81b6a7012485acdb9c6c80735a0b7d8e5e1873", "versionType": "git"}, {"status": "affected", "version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da", "lessThan": "cd1b7403ec835f8a0b3f1f7e68ac26af2cb1e42f", "versionType": "git"}, {"status": "affected", "version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da", "lessThan": "b75209debb9adab287b3caa982f77788c1e15027", "versionType": "git"}, {"status": "affected", "version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da", "lessThan": "528b4509c9dfc272e2e92d811915e5211650d383", "versionType": "git"}, {"status": "affected", "version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da", "lessThan": "75fcaee5170e7dbbee778927134ef2e9568b4659", "versionType": "git"}, {"status": "affected", "version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da", "lessThan": "865dba58958c3a86786f89a501971ab0e3ec6ba9", "versionType": "git"}, {"status": "affected", "version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da", "lessThan": "d4f17256544cc37f6534a14a27a9dec3540c2015", "versionType": "git"}, {"status": "affected", "version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da", "lessThan": "fbce58e719a17aa215c724473fd5baaa4a8dc57c", "versionType": "git"}], "programFiles": ["net/netfilter/nf_conntrack_sip.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.34"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.34", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.253", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.203", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.167", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.130", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.78", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.20", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.10", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/netfilter/nf_conntrack_sip.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/ed81b6a7012485acdb9c6c80735a0b7d8e5e1873"}, {"url": "https://git.kernel.org/stable/c/cd1b7403ec835f8a0b3f1f7e68ac26af2cb1e42f"}, {"url": "https://git.kernel.org/stable/c/b75209debb9adab287b3caa982f77788c1e15027"}, {"url": "https://git.kernel.org/stable/c/528b4509c9dfc272e2e92d811915e5211650d383"}, {"url": "https://git.kernel.org/stable/c/75fcaee5170e7dbbee778927134ef2e9568b4659"}, {"url": "https://git.kernel.org/stable/c/865dba58958c3a86786f89a501971ab0e3ec6ba9"}, {"url": "https://git.kernel.org/stable/c/d4f17256544cc37f6534a14a27a9dec3540c2015"}, {"url": "https://git.kernel.org/stable/c/fbce58e719a17aa215c724473fd5baaa4a8dc57c"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conntrack_sip: fix Content-Length u32 truncation in sip_help_tcp()\n\nsip_help_tcp() parses the SIP Content-Length header with\nsimple_strtoul(), which returns unsigned long, but stores the result in\nunsigned int clen. On 64-bit systems, values exceeding UINT_MAX are\nsilently truncated before computing the SIP message boundary.\n\nFor example, Content-Length 4294967328 (2^32 + 32) is truncated to 32,\ncausing the parser to miscalculate where the current message ends. The\nloop then treats trailing data in the TCP segment as a second SIP\nmessage and processes it through the SDP parser.\n\nFix this by changing clen to unsigned long to match the return type of\nsimple_strtoul(), and reject Content-Length values that exceed the\nremaining TCP payload length."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.253", "versionStartIncluding": "2.6.34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.203", "versionStartIncluding": "2.6.34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.167", "versionStartIncluding": "2.6.34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.130", "versionStartIncluding": "2.6.34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.78", "versionStartIncluding": "2.6.34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.20", "versionStartIncluding": "2.6.34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.19.10", "versionStartIncluding": "2.6.34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0", "versionStartIncluding": "2.6.34"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:21:56.236Z"}}}, "cveMetadata": {"cveId": "CVE-2026-23457", "state": "PUBLISHED", "dateUpdated": "2026-11-10T12:43:29.967Z", "dateReserved": "2026-01-13T15:37:46.020Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-04-03T15:15:38.193Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.7", "versionType": "custom"}]}], "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E40FDCE0-F435-4862-9BEF-B0C980697894", "versionEndExcluding": "5.10.253", "versionStartIncluding": "2.6.34", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "20DDB3E9-AABF-4107-ADB0-5362AA067045", "versionEndExcluding": "5.15.203", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "2EDC6BAF-B710-4E26-B6AA-D68922EE7B43", "versionEndExcluding": "6.1.167", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": 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On 64-bit systems, values exceeding UINT_MAX are\nsilently truncated before computing the SIP message boundary.\n\nFor example, Content-Length 4294967328 (2^32 + 32) is truncated to 32,\ncausing the parser to miscalculate where the current message ends. The\nloop then treats trailing data in the TCP segment as a second SIP\nmessage and processes it through the SDP parser.\n\nFix this by changing clen to unsigned long to match the return type of\nsimple_strtoul(), and reject Content-Length values that exceed the\nremaining TCP payload length."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnetfilter: nf_conntrack_sip: correcci\u00f3n de la truncaci\u00f3n u32 de Content-Length en sip_help_tcp()\n\nsip_help_tcp() analiza la cabecera SIP Content-Length con simple_strtoul(), que devuelve unsigned long, pero almacena el resultado en unsigned int clen. En sistemas de 64 bits, los valores que exceden UINT_MAX se truncan silenciosamente antes de calcular el l\u00edmite del mensaje SIP.\n\nPor ejemplo, Content-Length 4294967328 (2^32 + 32) se trunca a 32, provocando que el analizador calcule err\u00f3neamente d\u00f3nde termina el mensaje actual. El bucle entonces trata los datos restantes en el segmento TCP como un segundo mensaje SIP y lo procesa a trav\u00e9s del analizador SDP.\n\nSe corrige esto cambiando clen a unsigned long para que coincida con el tipo de retorno de simple_strtoul(), y rechazando los valores de Content-Length que exceden la longitud restante de la carga \u00fatil TCP."}], "id": "CVE-2026-23457", "lastModified": "2026-11-10T13:18:48.033", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.7, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-23457", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:08:27.615597Z", "version": "2.0.3"}}]}, "published": "2026-04-03T16:16:32.473", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/528b4509c9dfc272e2e92d811915e5211650d383"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/75fcaee5170e7dbbee778927134ef2e9568b4659"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/865dba58958c3a86786f89a501971ab0e3ec6ba9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b75209debb9adab287b3caa982f77788c1e15027"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cd1b7403ec835f8a0b3f1f7e68ac26af2cb1e42f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d4f17256544cc37f6534a14a27a9dec3540c2015"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ed81b6a7012485acdb9c6c80735a0b7d8e5e1873"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fbce58e719a17aa215c724473fd5baaa4a8dc57c"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-190"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: netfilter: nf_conntrack_sip: fix Content-Length u32 truncation in sip_help_tcp()", "id": "2454800", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2454800"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-681", "details": ["A flaw was found in the Linux kernel's netfilter subsystem, specifically within the `nf_conntrack_sip` module. This vulnerability arises from an integer truncation error when processing the `Content-Length` header in Session Initiation Protocol (SIP) messages. On 64-bit systems, large `Content-Length` values are silently truncated, causing the system to misinterpret the boundary of SIP messages. This can lead to the incorrect parsing of network traffic, potentially allowing an attacker to bypass security policies or trigger unintended processing of data."], "name": "CVE-2026-23457", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "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", "product_name": "Red Hat Enterprise Linux 8"}, {"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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-04-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-23457\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-23457\nhttps://lore.kernel.org/linux-cve-announce/2026040318-CVE-2026-23457-e7f6@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f5b321bd37fbec9188feb1f721ab46a5ac0b35da,b75209debb9adab287b3caa982f77788c1e15027)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f5b321bd37fbec9188feb1f721ab46a5ac0b35da,528b4509c9dfc272e2e92d811915e5211650d383)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f5b321bd37fbec9188feb1f721ab46a5ac0b35da,75fcaee5170e7dbbee778927134ef2e9568b4659)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f5b321bd37fbec9188feb1f721ab46a5ac0b35da,865dba58958c3a86786f89a501971ab0e3ec6ba9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f5b321bd37fbec9188feb1f721ab46a5ac0b35da,d4f17256544cc37f6534a14a27a9dec3540c2015)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f5b321bd37fbec9188feb1f721ab46a5ac0b35da,fbce58e719a17aa215c724473fd5baaa4a8dc57c)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.34"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.34)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.167,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.130,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.78,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.20,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.10,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0-rc5,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-04-03T21:13:41.344320+00:00", "updated": "2026-10-19T21:00:04.824640+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}