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CVE-2026-23398

In the Linux kernel, the following vulnerability has been resolved: icmp: fix NULL pointer dereference in icmp_tag_validation() icmp_tag_validation() unconditionally dereferences the result of rcu_dereference(inet_protos[proto]) without checking for NULL. The inet_protos[] array is sparse -- only about 15 of 256 protocol numbers have registered handlers. When ip_no_pmtu_disc is set to 3 (hardened PMTU mode) and the kernel receives an ICMP Fragmentation Needed error with a quoted inner IP heade
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ac04a63d50c18de567c3a6a849954b83d3efe1105e478bd9d6442beebe5cd79e
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:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/adp/0/affected/5

{"defaultStatus":"affected","product":"Linux","programFiles":["net/ipv4/icmp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.14"},{"lessThan":"3.14","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"},{"lessThanOrEqu…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/cna/affected/1

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/adp/0/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/ipv4/icmp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"571d9d7b650f02d1e38c01128817868bceac9edd","status":"affected","version":"8ed1dc44d3e9e8387a104b1ae8f92e9a3fbf1b1e","versionType":"git"},{"lessThan":"d783fa413c702ff0f8f8bea63f862e28eeaf39e3","status":"affected","version":"8ed1dc44d3e9e8387a104b1ae8f92e9a3fbf1b1e","versionType":"git"},{"lessThan":"1f9f2c6d4b2a613b7756fc5679c5116ba2ca0161","status":"affected","version":"8ed1dc44d3e9e8387a104b1ae8f92e…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/cna/affected/0

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/adp/0/affected/9

{"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:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/adp/0/affected/6

{"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:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /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:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/adp/0/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:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/adp/0/affected/8

{"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:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/adp/0/affected/7

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /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:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /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:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/adp/0/affected/5
{"defaultStatus":"affected","product":"Linux","programFiles":["net/ipv4/icmp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.14"},{"lessThan":"3.14","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"},{"lessThanOrEqu…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/cna/affected/1
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/adp/0/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/ipv4/icmp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"571d9d7b650f02d1e38c01128817868bceac9edd","status":"affected","version":"8ed1dc44d3e9e8387a104b1ae8f92e9a3fbf1b1e","versionType":"git"},{"lessThan":"d783fa413c702ff0f8f8bea63f862e28eeaf39e3","status":"affected","version":"8ed1dc44d3e9e8387a104b1ae8f92e9a3fbf1b1e","versionType":"git"},{"lessThan":"1f9f2c6d4b2a613b7756fc5679c5116ba2ca0161","status":"affected","version":"8ed1dc44d3e9e8387a104b1ae8f92e…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/cna/affected/0
{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/adp/0/affected/9
{"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:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/adp/0/affected/6
{"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:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /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:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/adp/0/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:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/adp/0/affected/8
{"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:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/adp/0/affected/7
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /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:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/adp/0/affected/2

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:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /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:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/adp/0/references/0
{"url":"https://git.kernel.org/stable/c/1e4e2f5e48cec0cccaea9815fb9486c084ba41e2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/1f9f2c6d4b2a613b7756fc5679c5116ba2ca0161"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/571d9d7b650f02d1e38c01128817868bceac9edd"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/614aefe56af8e13331e50220c936fc0689cf5675"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/9647e99d2a617c355d2b378be0ff6d0e848fd579"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/b61529c357f1ee4d64836eb142a542d2e7ad67ce"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/d783fa413c702ff0f8f8bea63f862e28eeaf39e3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/d938dd5a0ad780c891ea3bc94cae7405f11e618a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:82bed072b99d5aa9d81946478e64c5626b42afe50c951436d8313ac7452b1bf7 · sha256:2471d8b4a704f4ca… · /containers/cna/references/5

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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