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CVE-2026-23457

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_sip: fix Content-Length u32 truncation in sip_help_tcp() sip_help_tcp() parses the SIP Content-Length header with simple_strtoul(), which returns unsigned long, but stores the result in unsigned int clen. On 64-bit systems, values exceeding UINT_MAX are silently truncated before computing the SIP message boundary. For example, Content-Length 4294967328 (2^32 + 32) is truncated to 32, causing the parse
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ddd6ddc28c3b7c367812acfa5952a8b753cac7b808f0001da0229770f59952c5
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 12 assertions

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/5

{"defaultStatus":"affected","product":"Linux","programFiles":["net/netfilter/nf_conntrack_sip.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.34"},{"lessThan":"2.6.34","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.167","versionType":"sem…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/cna/affected/1

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/0

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/7

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/netfilter/nf_conntrack_sip.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ed81b6a7012485acdb9c6c80735a0b7d8e5e1873","status":"affected","version":"f5b321bd37fbec9188feb1f721ab46a5ac0b35da","versionType":"git"},{"lessThan":"cd1b7403ec835f8a0b3f1f7e68ac26af2cb1e42f","status":"affected","version":"f5b321bd37fbec9188feb1f721ab46a5ac0b35da","versionType":"git"},{"lessThan":"b75209debb9adab287b3caa982f77788c1e15027","status":"affected","version":"f5b321bd37fbe…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/cna/affected/0

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/6

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/4

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/1

{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/9

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/3

{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/8

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/2

Affected products and versions

12 source assertions
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/5
{"defaultStatus":"affected","product":"Linux","programFiles":["net/netfilter/nf_conntrack_sip.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.34"},{"lessThan":"2.6.34","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.167","versionType":"sem…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/cna/affected/1
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/0
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/7
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/netfilter/nf_conntrack_sip.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ed81b6a7012485acdb9c6c80735a0b7d8e5e1873","status":"affected","version":"f5b321bd37fbec9188feb1f721ab46a5ac0b35da","versionType":"git"},{"lessThan":"cd1b7403ec835f8a0b3f1f7e68ac26af2cb1e42f","status":"affected","version":"f5b321bd37fbec9188feb1f721ab46a5ac0b35da","versionType":"git"},{"lessThan":"b75209debb9adab287b3caa982f77788c1e15027","status":"affected","version":"f5b321bd37fbe…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/cna/affected/0
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/6
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/4
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/1
{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/9
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/3
{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/8
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/affected/2

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":8.6,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/cna/metrics/0/cvssV3_1

Source references

10 source assertions
{"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/references/1
{"url":"https://cert-portal.siemens.com/productcert/html/ssa-082556.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/adp/0/references/0
{"url":"https://git.kernel.org/stable/c/528b4509c9dfc272e2e92d811915e5211650d383"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/75fcaee5170e7dbbee778927134ef2e9568b4659"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/865dba58958c3a86786f89a501971ab0e3ec6ba9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/b75209debb9adab287b3caa982f77788c1e15027"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/cd1b7403ec835f8a0b3f1f7e68ac26af2cb1e42f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/d4f17256544cc37f6534a14a27a9dec3540c2015"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/ed81b6a7012485acdb9c6c80735a0b7d8e5e1873"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/fbce58e719a17aa215c724473fd5baaa4a8dc57c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8859057179215051ab1b1b3f9aeefbbbe480c6b10a769e082cb8334e526daa6c · sha256:237b4958ceb2af36… · /containers/cna/references/7

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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