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CVE-2026-23083

In the Linux kernel, the following vulnerability has been resolved: fou: Don't allow 0 for FOU_ATTR_IPPROTO. fou_udp_recv() has the same problem mentioned in the previous patch. If FOU_ATTR_IPPROTO is set to 0, skb is not freed by fou_udp_recv() nor "resubmit"-ted in ip_protocol_deliver_rcu(). Let's forbid 0 for FOU_ATTR_IPPROTO.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d4fe5f3b651a56bba2b7aef1bcf2daf62730ecc5c6593e010d4a740e2db365e1
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 7 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:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/adp/1/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:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/adp/1/affected/3

{"defaultStatus":"affected","product":"Linux","programFiles":["Documentation/netlink/specs/fou.yaml","net/ipv4/fou_nl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.18"},{"lessThan":"3.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.249","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.199","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.162…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /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:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/adp/1/affected/2

{"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:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/adp/1/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["Documentation/netlink/specs/fou.yaml","net/ipv4/fou_nl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c7498f9bc390479ccfad7c7f2332237ff4945b03","status":"affected","version":"23461551c00628c3f3fe9cf837bf53cf8f212b63","versionType":"git"},{"lessThan":"611ef4bd9c73d9e6d87bed57a635ff1fdd8c91ea","status":"affected","version":"23461551c00628c3f3fe9cf837bf53cf8f212b63","versionType":"git"},{"lessThan":"6e983789b7588ee59cbf303583546c043bad8e19","status":"affected",…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/cna/affected/0

{"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:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/adp/1/affected/4

Affected products and versions

7 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:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/adp/1/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:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/adp/1/affected/3
{"defaultStatus":"affected","product":"Linux","programFiles":["Documentation/netlink/specs/fou.yaml","net/ipv4/fou_nl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.18"},{"lessThan":"3.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.249","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.199","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.162…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /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:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/adp/1/affected/2
{"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:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/adp/1/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["Documentation/netlink/specs/fou.yaml","net/ipv4/fou_nl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c7498f9bc390479ccfad7c7f2332237ff4945b03","status":"affected","version":"23461551c00628c3f3fe9cf837bf53cf8f212b63","versionType":"git"},{"lessThan":"611ef4bd9c73d9e6d87bed57a635ff1fdd8c91ea","status":"affected","version":"23461551c00628c3f3fe9cf837bf53cf8f212b63","versionType":"git"},{"lessThan":"6e983789b7588ee59cbf303583546c043bad8e19","status":"affected",…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/cna/affected/0
{"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:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/adp/1/affected/4

Source references

8 source assertions
{"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/adp/1/references/0
{"url":"https://git.kernel.org/stable/c/1cc98b8887cabb1808d2f4a37cd10a7be7574771"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/611ef4bd9c73d9e6d87bed57a635ff1fdd8c91ea"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/6e983789b7588ee59cbf303583546c043bad8e19"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/7a9bc9e3f42391e4c187e099263cf7a1c4b69ff5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/9b75dff8446ec871030d8daf5a69e74f5fe8b956"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/b7db31a52c3862a1a32202a273a4c32e7f5f4823"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/c7498f9bc390479ccfad7c7f2332237ff4945b03"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:349019f9529da7941142b2707716b6652406280a86e9c2b2096d1bed5436b43a · sha256:391b5c9aee8d0806… · /containers/cna/references/0

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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