In the Linux kernel, the following vulnerability has been resolved:
mptcp: fix data stream corruption
Maxim reported several issues when forcing a TCP transparent proxy to use the MPTCP protocol for the inbound connections. He also provided a clean reproducer.
The problem boils down to 'mptcp_frag_can_collapse_to()' assuming that only MPTCP will use the given page_frag.
If others - e.g. the plain TCP protocol - allocate page fragments, we can end-up re-using already allocated memory for mptcp_data_frag.
Fix the issue ensuring that the to-be-expanded data fragment is located at the current page frag end.
v1 -> v2: - added missing fixes tag (Mat)
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernelUpgrade kernel-toolsUpgrade perfUpgrade bpftoolUpgrade kernel-tools-develUpgrade python-perfUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade python-perf-debuginfoUpgrade kernel-headersUpgrade kernel-develUpgrade bpftool-debuginfoUpgrade perf-debuginfo | Aug 28, 2024 | Mar 25, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Mar 25, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Mar 25, 2024 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub