CVE-2021-47152 (GCVE-0-2021-47152)
Vulnerability from cvelistv5
Published
2024-03-25 09:07
Modified
2025-05-04 07:05
Severity ?
Summary
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)
References
Impacted products
Vendor Product Version
Linux Linux Version: 18b683bff89d46ace55f12d00c0440d44d6160c4
Version: 18b683bff89d46ace55f12d00c0440d44d6160c4
Version: 18b683bff89d46ace55f12d00c0440d44d6160c4
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