CVE-2021-47152 (GCVE-0-2021-47152)
Vulnerability from cvelistv5
Published
2024-03-25 09:07
Modified
2024-12-19 07:36
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/18e7f0580da15cac1e79d73683ada5a9e70980f8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/29249eac5225429b898f278230a6ca2baa1ae154Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3267a061096efc91eda52c2a0c61ba76e46e4b34Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/18e7f0580da15cac1e79d73683ada5a9e70980f8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/29249eac5225429b898f278230a6ca2baa1ae154Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3267a061096efc91eda52c2a0c61ba76e46e4b34Patch
Impacted products
Vendor Product Version
Linux Linux Version: 18b683bff89d46ace55f12d00c0440d44d6160c4
Version: 18b683bff89d46ace55f12d00c0440d44d6160c4
Version: 18b683bff89d46ace55f12d00c0440d44d6160c4
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   Linux Linux Version: 5.7
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