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CVE-2026-23397

In the Linux kernel, the following vulnerability has been resolved: nfnetlink_osf: validate individual option lengths in fingerprints nfnl_osf_add_callback() validates opt_num bounds and string NUL-termination but does not check individual option length fields. A zero-length option causes nf_osf_match_one() to enter the option matching loop even when foptsize sums to zero, which matches packets with no TCP options where ctx->optp is NULL: Oops: general protection fault KASAN: null-ptr-deref
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d57a821eb15ab273215dcdd862584b607851b86f15cfd5e4f3557a4a69de173f
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":"affected","product":"Linux","programFiles":["net/netfilter/nfnetlink_osf.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.31"},{"lessThan":"2.6.31","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":"semver…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/cna/affected/1

{"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:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/4

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/2

{"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:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/netfilter/nfnetlink_osf.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e9cf17b91e733fec725ebcc0b3098bc5ccd505e0","status":"affected","version":"11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384","versionType":"git"},{"lessThan":"3c11b5c2436a3a5b450612ab160e3a525b28cfb5","status":"affected","version":"11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384","versionType":"git"},{"lessThan":"aa0574182c46963c3cdb8cde46ec93aca21100d8","status":"affected","version":"11eeef41d5f63c7d…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/cna/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:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/3

{"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:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/5

{"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:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/9

{"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:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /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:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/0

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/6

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/7

Affected products and versions

12 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["net/netfilter/nfnetlink_osf.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.31"},{"lessThan":"2.6.31","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":"semver…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/cna/affected/1
{"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:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/4
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/2
{"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:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/netfilter/nfnetlink_osf.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e9cf17b91e733fec725ebcc0b3098bc5ccd505e0","status":"affected","version":"11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384","versionType":"git"},{"lessThan":"3c11b5c2436a3a5b450612ab160e3a525b28cfb5","status":"affected","version":"11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384","versionType":"git"},{"lessThan":"aa0574182c46963c3cdb8cde46ec93aca21100d8","status":"affected","version":"11eeef41d5f63c7d…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/cna/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:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/3
{"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:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/5
{"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:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/9
{"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:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /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:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/0
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/6
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/affected/7

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:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /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:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/adp/0/references/0
{"url":"https://git.kernel.org/stable/c/224f4678812e1a7bc8341bcb666773a0aec5ea6f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/3932620c04c2938c93c0890c225960d3d34ba355"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/3c11b5c2436a3a5b450612ab160e3a525b28cfb5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/4c6aa008b913e808c4f4d3cde36cb1d9bb5967c6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/aa0574182c46963c3cdb8cde46ec93aca21100d8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/dbdfaae9609629a9569362e3b8f33d0a20fd783c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/e9cf17b91e733fec725ebcc0b3098bc5ccd505e0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/ec8bf0571b142f29dc0b68ae2ac3952f7a464b38"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:efaffb190d1cf322940c36d7c2d1b9a27a760b139174d0c6fb216f2e8131ff5f · sha256:833d2029cb6d1506… · /containers/cna/references/4

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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