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CVE-2026-31423

In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_hfsc: fix divide-by-zero in rtsc_min() m2sm() converts a u32 slope to a u64 scaled value. For large inputs (e.g. m1=4000000000), the result can reach 2^32. rtsc_min() stores the difference of two such u64 values in a u32 variable `dsm` and uses it as a divisor. When the difference is exactly 2^32 the truncation yields zero, causing a divide-by-zero oops in the concave-curve intersection path: Oops: divide
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:611ef549541b45b106b92ae4906fd38cd9ac7c79dd0df5b53095555f41ab9bdb
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":"V3.1.6","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/adp/0/affected/4

{"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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/adp/0/affected/5

{"defaultStatus":"affected","product":"Linux","programFiles":["net/sched/sch_hfsc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.12"},{"lessThan":"2.6.12","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":"6.1.168","versionType":"semver"},{"less…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/adp/0/affected/1

{"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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/adp/0/affected/7

{"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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/adp/0/affected/2

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/adp/0/affected/3

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/sched/sch_hfsc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ad8e8fec40290a8c8cf145c0deaadf76f80c5163","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"ab1ff5890c7354afc7be56502fcfbd61f3b7ae4f","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"25b6821884713a31e2b49fb67b0ebd765b33e0a9","status":"affected","version":"1da177e4c3f41524e886b7f1b…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/adp/0/affected/8

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":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/adp/0/affected/4
{"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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/adp/0/affected/5
{"defaultStatus":"affected","product":"Linux","programFiles":["net/sched/sch_hfsc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.12"},{"lessThan":"2.6.12","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":"6.1.168","versionType":"semver"},{"less…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/adp/0/affected/1
{"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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/adp/0/affected/7
{"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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/adp/0/affected/2
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/adp/0/affected/3
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/sched/sch_hfsc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ad8e8fec40290a8c8cf145c0deaadf76f80c5163","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"ab1ff5890c7354afc7be56502fcfbd61f3b7ae4f","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"25b6821884713a31e2b49fb67b0ebd765b33e0a9","status":"affected","version":"1da177e4c3f41524e886b7f1b…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/adp/0/affected/8

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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /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:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/adp/0/references/0
{"url":"https://git.kernel.org/stable/c/17c1b9807b8a67d676b6dcf749ee932ebaa7f568"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/25b6821884713a31e2b49fb67b0ebd765b33e0a9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/4576100b8cd03118267513cafacde164b498b322"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/ab1ff5890c7354afc7be56502fcfbd61f3b7ae4f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/ad8e8fec40290a8c8cf145c0deaadf76f80c5163"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/b9e6431cbea8bb1fae8069ed099b4ee100499835"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/c56f78614e7781aaceca9bd3cb2128bf7d45c3bd"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/d0aefec1b1a1ba2c1d251028dc2c4e5b4ce1fea5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b86945ab970b778970bc4d6b878aab4190ae5a89dc0b87dbc1bbc44324cfda14 · sha256:dd41c3c919120333… · /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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