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CVE-2026-31669

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix slab-use-after-free in __inet_lookup_established The ehash table lookups are lockless and rely on SLAB_TYPESAFE_BY_RCU to guarantee socket memory stability during RCU read-side critical sections. Both tcp_prot and tcpv6_prot have their slab caches created with this flag via proto_register(). However, MPTCP's mptcp_subflow_init() copies tcpv6_prot into tcpv6_prot_override during inet_init() (fs_initcall, level 5), b
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:81148448da689eeac9f546a77e9a0a14a8c45989575787a645714a371591fa88
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":"V3.1.5","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/adp/0/affected/3

{"defaultStatus":"affected","product":"Linux","programFiles":["net/mptcp/protocol.c","net/mptcp/protocol.h","net/mptcp/subflow.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.12"},{"lessThan":"5.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.169","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /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:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /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:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/adp/0/affected/6

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/adp/0/affected/2

{"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:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/adp/0/affected/8

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/mptcp/protocol.c","net/mptcp/protocol.h","net/mptcp/subflow.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f6e1f25fa5e733570f6d6fe37a4dfed2a0deba47","status":"affected","version":"b19bc2945b40b9fd38e835700907ffe8534ef0de","versionType":"git"},{"lessThan":"fb1f54b7d16f393b8b65d328410f78b4beea8fcc","status":"affected","version":"b19bc2945b40b9fd38e835700907ffe8534ef0de","versionType":"git"},{"lessThan":"3fd6547f5b8ac99687be6d937a0321efda760597","status":"a…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /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:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /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:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/adp/0/affected/4

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /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:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/adp/0/affected/5

{"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:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/adp/0/affected/7

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":"V3.1.5","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/adp/0/affected/3
{"defaultStatus":"affected","product":"Linux","programFiles":["net/mptcp/protocol.c","net/mptcp/protocol.h","net/mptcp/subflow.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.12"},{"lessThan":"5.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.169","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /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:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /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:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/adp/0/affected/6
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/adp/0/affected/2
{"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:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/adp/0/affected/8
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/mptcp/protocol.c","net/mptcp/protocol.h","net/mptcp/subflow.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f6e1f25fa5e733570f6d6fe37a4dfed2a0deba47","status":"affected","version":"b19bc2945b40b9fd38e835700907ffe8534ef0de","versionType":"git"},{"lessThan":"fb1f54b7d16f393b8b65d328410f78b4beea8fcc","status":"affected","version":"b19bc2945b40b9fd38e835700907ffe8534ef0de","versionType":"git"},{"lessThan":"3fd6547f5b8ac99687be6d937a0321efda760597","status":"a…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /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:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /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:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/adp/0/affected/4
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.5","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /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:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/adp/0/affected/5
{"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:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/adp/0/affected/7

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/cna/metrics/0/cvssV3_1

Source references

9 source assertions
{"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /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:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/adp/0/references/0
{"url":"https://git.kernel.org/stable/c/15fa9ead4d5e6b6b9c794e84144146c917f2cb62"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/3fd6547f5b8ac99687be6d937a0321efda760597"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/9b55b253907e7431210483519c5ad711a37dafa1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/b313e9037d98c13938740e5ebda7852929366dff"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/eb9c6aeb512f877cf397deb1e4526f646c70e4a7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/f6e1f25fa5e733570f6d6fe37a4dfed2a0deba47"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/fb1f54b7d16f393b8b65d328410f78b4beea8fcc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ecd716cd972e4913728490809227fd0d5869710412d3863a5aec4c601b4a5514 · sha256:20302f275b044a0f… · /containers/cna/references/1

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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