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CVE PROGRAM SOURCE RECORD9.4 Critical

CVE-2025-38552

mptcp: plug races between subflow fail and subflow creation

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: mptcp: plug races between subflow fail and subflow creation We have races similar to the one addressed by the previous patch between subflow failing and additional subflow creation. They are just harder to trigger. The solution is similar. Use a separate flag to track the condition 'socket state prevent any additional subflow creation' protected by the fallback lock. The socket fallback makes such flag true, and also receiving or sending an MP_FAIL option. The field 'allow_infinite_fallback' is now always touched under the relevant lock, we can drop the ONCE annotation on write.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 478d770008b03ed9d74bdc8add2315b7fd124ecc to < c476d627584b7589a134a8b48dd5c6639e4401c5affected
  • 478d770008b03ed9d74bdc8add2315b7fd124ecc to < 7c96d519ee15a130842a6513530b4d20acd2bfcdaffected
  • 478d770008b03ed9d74bdc8add2315b7fd124ecc to < f81b6fbe13c7fc413b5158cdffc6a59391a2a8dbaffected
  • 478d770008b03ed9d74bdc8add2315b7fd124ecc to < 659da22dee5ff316ba63bdaeeac7b58b5442f6c2affected
  • 478d770008b03ed9d74bdc8add2315b7fd124ecc to < def5b7b2643ebba696fc60ddf675dca13f073486affected

Linux Linux

Default version status: affected

  • 5.15affected
  • 0 to < 5.15unaffected
  • 6.1.149 to ≤ 6.1.*unaffected
  • 6.6.101 to ≤ 6.6.*unaffected
  • 6.12.40 to ≤ 6.12.*unaffected
  • 6.15.8 to ≤ 6.15.*unaffected
  • 6.16 to ≤ *unaffected

References