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CVE-2026-45889

In the Linux kernel, the following vulnerability has been resolved: mptcp: do not account for OoO in mptcp_rcvbuf_grow() MPTCP-level OoOs are physiological when multiple subflows are active concurrently and will not cause retransmissions nor are caused by drops. Accounting for them in mptcp_rcvbuf_grow() causes the rcvbuf slowly drifting towards tcp_rmem[2]. Remove such accounting. Note that subflows will still account for TCP-level OoO when the MPTCP-level rcvbuf is propagated. This also c
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6bbc735e53d436e9b2bf0450750279c7885999f4b13255ea9b9f225f89f71c8b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/mptcp/protocol.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"fb7bf00b04a6b48859f52035d4e745848c2b4c79","status":"affected","version":"e118cdc34dd109562b64f6a397f68cd33b041d5b","versionType":"git"},{"lessThan":"400ee4854adef1e4983812a3decf6717ea020136","status":"affected","version":"e118cdc34dd109562b64f6a397f68cd33b041d5b","versionType":"git"},{"lessThan":"6b329393502e5857662b851a13f947209c588587","status":"affected","version":"e118cdc34dd109562b64f6a39…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:703fbb8868b6fd9adeab802f6cb8cde49025f01bdb91ae0fbe86fae24c931dd5 · sha256:8bd8b91eb5f2c325… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["net/mptcp/protocol.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.18"},{"lessThan":"6.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.14","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:703fbb8868b6fd9adeab802f6cb8cde49025f01bdb91ae0fbe86fae24c931dd5 · sha256:8bd8b91eb5f2c325… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/mptcp/protocol.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"fb7bf00b04a6b48859f52035d4e745848c2b4c79","status":"affected","version":"e118cdc34dd109562b64f6a397f68cd33b041d5b","versionType":"git"},{"lessThan":"400ee4854adef1e4983812a3decf6717ea020136","status":"affected","version":"e118cdc34dd109562b64f6a397f68cd33b041d5b","versionType":"git"},{"lessThan":"6b329393502e5857662b851a13f947209c588587","status":"affected","version":"e118cdc34dd109562b64f6a39…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:703fbb8868b6fd9adeab802f6cb8cde49025f01bdb91ae0fbe86fae24c931dd5 · sha256:8bd8b91eb5f2c325… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["net/mptcp/protocol.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.18"},{"lessThan":"6.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.14","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:703fbb8868b6fd9adeab802f6cb8cde49025f01bdb91ae0fbe86fae24c931dd5 · sha256:8bd8b91eb5f2c325… · /containers/cna/affected/1

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/400ee4854adef1e4983812a3decf6717ea020136"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:703fbb8868b6fd9adeab802f6cb8cde49025f01bdb91ae0fbe86fae24c931dd5 · sha256:8bd8b91eb5f2c325… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/6b329393502e5857662b851a13f947209c588587"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:703fbb8868b6fd9adeab802f6cb8cde49025f01bdb91ae0fbe86fae24c931dd5 · sha256:8bd8b91eb5f2c325… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/fb7bf00b04a6b48859f52035d4e745848c2b4c79"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:703fbb8868b6fd9adeab802f6cb8cde49025f01bdb91ae0fbe86fae24c931dd5 · sha256:8bd8b91eb5f2c325… · /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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