CVE-2022-50071

HIGH EPSS 9.5%
Published Jun 18, 20251y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Jun 18, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: mptcp: move subflow cleanup in mptcp_destroy_common() If the mptcp socket creation fails due to a CGROUP_INET_SOCK_CREATE eBPF program, the MPTCP protocol ends-up leaking all the subflows: the related cleanup happens in __mptcp_destroy_sock() that is not invoked in such code path. Address the issue moving the subflow sockets cleanup in the mptcp_destroy_common() helper, which is invoked in every msk cleanup path. Additionally get rid of the intermediate list_splice_init step, which is an unneeded relic from the past. The issue is present since before the reported root cause commit, but any attempt to backport the fix before that hash will require a complete rewrite.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
9.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 1

VendorProductVersionRange
linuxlinux_kernel*≥5.11  –  <5.19.4

References 2

  • git.kernel.org https://git.kernel.org/stable/c/6139039c8fc5c9dbcdc3ad389b9a6d0cacb4d693
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c0bf3c6aa444a5ef44acc57ef6cfa53fd4fc1c9b
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/6139039c8fc5c9dbcdc3ad389b9a6d0cacb4d693
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c0bf3c6aa444a5ef44acc57ef6cfa53fd4fc1c9b
    Patch