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CVE PROGRAM SOURCE RECORD8.2 High

CVE-2024-45009

mptcp: pm: only decrement add_addr_accepted for MPJ req

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: only decrement add_addr_accepted for MPJ req Adding the following warning ... WARN_ON_ONCE(msk->pm.add_addr_accepted == 0) ... before decrementing the add_addr_accepted counter helped to find a bug when running the "remove single subflow" subtest from the mptcp_join.sh selftest. Removing a 'subflow' endpoint will first trigger a RM_ADDR, then the subflow closure. Before this patch, and upon the reception of the RM_ADDR, the other peer will then try to decrement this add_addr_accepted. That's not correct because the attached subflows have not been created upon the reception of an ADD_ADDR. A way to solve that is to decrement the counter only if the attached subflow was an MP_JOIN to a remote id that was not 0, and initiated by the host receiving the RM_ADDR.

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

  • d0876b2284cf8b34dd214b2d0aa21071c345da59 to < 35b31f5549ede4070566b949781e83495906b43daffected
  • d0876b2284cf8b34dd214b2d0aa21071c345da59 to < 85b866e4c4e63a1d7afb58f1e24273caad03d0b7affected
  • d0876b2284cf8b34dd214b2d0aa21071c345da59 to < d20bf2c96d7ffd171299b32f562f70e5bf5dc608affected
  • d0876b2284cf8b34dd214b2d0aa21071c345da59 to < 2060f1efab370b496c4903b840844ecaff324c3caffected
  • d0876b2284cf8b34dd214b2d0aa21071c345da59 to < 1c1f721375989579e46741f59523e39ec9b2a9bdaffected

Linux Linux

Default version status: affected

  • 5.10affected
  • 0 to < 5.10unaffected
  • 5.15.167 to ≤ 5.15.*unaffected
  • 6.1.107 to ≤ 6.1.*unaffected
  • 6.6.48 to ≤ 6.6.*unaffected
  • 6.10.7 to ≤ 6.10.*unaffected
  • 6.11 to ≤ *unaffected

References