CVE-2021-47152 - OpenCVE

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)

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

No data.

No data.

No data.

References

Link	Providers
https://git.kernel.org/stable/c/18e7f0580da15cac1e79d73683ada5a9e70980f8
https://git.kernel.org/stable/c/29249eac5225429b898f278230a6ca2baa1ae154
https://git.kernel.org/stable/c/3267a061096efc91eda52c2a0c61ba76e46e4b34
https://lore.kernel.org/linux-cve-announce/2024032500-CVE-2021-47152-a386@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2021-47152
https://www.cve.org/CVERecord?id=CVE-2021-47152

History

Wed, 11 Sep 2024 18:30:00 +0000

Type	Values Removed	Values Added
Metrics	ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Wed, 11 Sep 2024 13:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-03-25T09:07:47.235Z

Updated: 2024-11-04T12:00:29.864Z

Reserved: 2024-03-04T18:12:48.846Z

Link: CVE-2021-47152

Vulnrichment

Updated: 2024-08-04T05:24:39.850Z

NVD

Status : Awaiting Analysis

Published: 2024-03-25T09:15:09.357

Modified: 2024-03-25T13:47:14.087

Link: CVE-2021-47152

Redhat

Severity : Moderate

Publid Date: 2024-03-25T00:00:00Z

Links: CVE-2021-47152 - Bugzilla

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