CVE Explorer

CVE-2026-53183

In the Linux kernel, the following vulnerability has been resolved: mptcp: allow subflow rcv wnd to shrink In MPTCP connection, the `window` field in the TCP header refers to the MPTCP-level rcv_nxt and it's right edge should not move backward. Such constraint is enforced at DSS option generation time. At the same time, the TCP stack ensures independently that the TCP-level rcv wnd right's edge does not move backward. That in turn causes artificial inflating of the MPTCP rcv window when the i

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:24b31260f57f8c6a34b718bcee23c458b59a6a4e552a6bb469920707e818e468

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/mptcp/options.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"bf364b0f10b27679140699821f88af7f01e2a6e3","status":"affected","version":"f3589be0c420a3137e5902d15705ced6a36f3f43","versionType":"git"},{"lessThan":"b1fd13074f22105deec45aa02283e322733e0c2d","status":"affected","version":"f3589be0c420a3137e5902d15705ced6a36f3f43","versionType":"git"},{"lessThan":"aa3861f40ac32706d9e97bfac76984613e278788","status":"affected","version":"f3589be0c420a3137e5902d157…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:d1aacf698d927c6df1c719237ca781addfa6bbec2742102bee1356d74be53705 · sha256:b4a7571fc797a282… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["net/mptcp/options.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.19"},{"lessThan":"5.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.143","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.94","versionType":"semver"},{"lessThanOrEq…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:d1aacf698d927c6df1c719237ca781addfa6bbec2742102bee1356d74be53705 · sha256:b4a7571fc797a282… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:d1aacf698d927c6df1c719237ca781addfa6bbec2742102bee1356d74be53705 · sha256:b4a7571fc797a282… · /containers/cna/affected/0

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:d1aacf698d927c6df1c719237ca781addfa6bbec2742102bee1356d74be53705 · sha256:b4a7571fc797a282… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:d1aacf698d927c6df1c719237ca781addfa6bbec2742102bee1356d74be53705 · sha256:b4a7571fc797a282… · /containers/cna/metrics/0/cvssV3_1

Source references

6 source assertions

{"url":"https://git.kernel.org/stable/c/653245266913f03fcf21cbca68eed5c197a33e52"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:d1aacf698d927c6df1c719237ca781addfa6bbec2742102bee1356d74be53705 · sha256:b4a7571fc797a282… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/aa3861f40ac32706d9e97bfac76984613e278788"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:d1aacf698d927c6df1c719237ca781addfa6bbec2742102bee1356d74be53705 · sha256:b4a7571fc797a282… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/b1fd13074f22105deec45aa02283e322733e0c2d"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:d1aacf698d927c6df1c719237ca781addfa6bbec2742102bee1356d74be53705 · sha256:b4a7571fc797a282… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/bf364b0f10b27679140699821f88af7f01e2a6e3"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:d1aacf698d927c6df1c719237ca781addfa6bbec2742102bee1356d74be53705 · sha256:b4a7571fc797a282… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/c297a4e65c50a2b807d9309b22615080faffa8f3"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:d1aacf698d927c6df1c719237ca781addfa6bbec2742102bee1356d74be53705 · sha256:b4a7571fc797a282… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/da23be77e1292cd611e736c3aa17da633d7ddce7"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:d1aacf698d927c6df1c719237ca781addfa6bbec2742102bee1356d74be53705 · sha256:b4a7571fc797a282… · /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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