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Red Hat: CVE-2024-53122: kernel: mptcp: cope racing subflow creation in mptcp_rcv_space_adjust (Multiple Advisories)

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Red Hat: CVE-2024-53122: kernel: mptcp: cope racing subflow creation in mptcp_rcv_space_adjust (Multiple Advisories)

Severity
5
CVSS
(AV:N/AC:H/Au:N/C:N/I:N/A:C)
Published
12/02/2024
Created
01/11/2025
Added
01/10/2025
Modified
01/10/2025

Description

In the Linux kernel, the following vulnerability has been resolved: mptcp: cope racing subflow creation in mptcp_rcv_space_adjust Additional active subflows - i.e. created by the in kernel path manager - are included into the subflow list before starting the 3whs. A racing recvmsg() spooling data received on an already established subflow would unconditionally call tcp_cleanup_rbuf() on all the current subflows, potentially hitting a divide by zero error on the newly created ones. Explicitly check that the subflow is in a suitable state before invoking tcp_cleanup_rbuf().

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

References

  • CVE-2024-53122
  • RHSA-2025:0049
  • RHSA-2025:0051
  • RHSA-2025:0052
  • RHSA-2025:0054
  • RHSA-2025:0057
  • RHSA-2025:0059
  • RHSA-2025:0062
  • RHSA-2025:0063
  • RHSA-2025:0064
  • RHSA-2025:0065
  • RHSA-2025:0066
  • RHSA-2025:0109
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