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CVE-2026-23456

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_h323: fix OOB read in decode_int() CONS case In decode_int(), the CONS case calls get_bits(bs, 2) to read a length value, then calls get_uint(bs, len) without checking that len bytes remain in the buffer. The existing boundary check only validates the 2 bits for get_bits(), not the subsequent 1-4 bytes that get_uint() reads. This allows a malformed H.323/RAS packet to cause a 1-4 byte slab-out-of-bounds
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d934961a2ce69201d489fc657eac4a8ec30f5bb609879c8415c0e18f179c146b
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 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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/0

{"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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/1

{"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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/3

{"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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/2

{"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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/7

{"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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/5

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/netfilter/nf_conntrack_h323_asn1.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a2cd54b9348e485d338b3c132338a4410c99afaf","status":"affected","version":"5e35941d990123f155b02d5663e51a24f816b6f3","versionType":"git"},{"lessThan":"c95dc674ebf01ecfb40388b6facfc89b81fed3b7","status":"affected","version":"5e35941d990123f155b02d5663e51a24f816b6f3","versionType":"git"},{"lessThan":"41b417ff73a24b2c68134992cc44c88db27f482d","status":"affected","version":"5e35941…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/4

{"defaultStatus":"affected","product":"Linux","programFiles":["net/netfilter/nf_conntrack_h323_asn1.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.17"},{"lessThan":"2.6.17","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…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/cna/affected/1

{"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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/8

{"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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/9

Affected products and versions

12 source assertions
{"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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/0
{"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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/1
{"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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/3
{"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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/2
{"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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/7
{"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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/5
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/netfilter/nf_conntrack_h323_asn1.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a2cd54b9348e485d338b3c132338a4410c99afaf","status":"affected","version":"5e35941d990123f155b02d5663e51a24f816b6f3","versionType":"git"},{"lessThan":"c95dc674ebf01ecfb40388b6facfc89b81fed3b7","status":"affected","version":"5e35941d990123f155b02d5663e51a24f816b6f3","versionType":"git"},{"lessThan":"41b417ff73a24b2c68134992cc44c88db27f482d","status":"affected","version":"5e35941…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/4
{"defaultStatus":"affected","product":"Linux","programFiles":["net/netfilter/nf_conntrack_h323_asn1.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.17"},{"lessThan":"2.6.17","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…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/cna/affected/1
{"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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/8
{"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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/affected/9

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":8.2,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /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:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/adp/0/references/0
{"url":"https://git.kernel.org/stable/c/1e3a3593162c96e8a8de48b1e14f60c3b57fca8a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/41b417ff73a24b2c68134992cc44c88db27f482d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/52235bf88159a1ef16434ab49e47e99c8a09ab20"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/6bce72daeccca9aa1746e92d6c3d4784e71f2ebb"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/774a434f8c9c8602a976b2536f65d0172a07f4d2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/a2cd54b9348e485d338b3c132338a4410c99afaf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/c95dc674ebf01ecfb40388b6facfc89b81fed3b7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/fb6c3596823ec5dd09c2123340330d7448f51a59"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:fb3488d015e8d703920e100d2fae5ede313102231566d27744676b8af25e086f · sha256:b9da3965c386cc1e… · /containers/cna/references/6

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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