Description (CNA)
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)
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 18b683bff89d46ace55f12d00c0440d44d6160c4 before 3267a061096efc91eda52c2a0c61ba76e46e4b34; affected 18b683bff89d46ace55f12d00c0440d44d6160c4 before 18e7f0580da15cac1e79d73683ada5a9e70980f8; affected 18b683bff89d46ace55f12d00c0440d44d6160c4 before 29249eac5225429b898f278230a6ca2baa1ae154 |
| Linux / Linux | affected 5.7; unaffected 0 before 5.7; unaffected 5.10.42 through 5.10.*; unaffected 5.12.9 through 5.12.*; unaffected 5.13 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/3267a061096efc91eda52c2a0c61ba76e46e4b34
- https://git.kernel.org/stable/c/18e7f0580da15cac1e79d73683ada5a9e70980f8
- https://git.kernel.org/stable/c/29249eac5225429b898f278230a6ca2baa1ae154
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.