PT-2025-25997 · Linux+1 · Linux Kernel+1

Published 2022-08-05 · Updated 2026-05-26 · CVE-2022-50071

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A issue in the Linux kernel has been resolved, related to the MPTCP protocol. When the mptcp socket creation fails due to a CGROUP INET SOCK CREATE eBPF program, the MPTCP protocol leaks all the subflows because the related cleanup happens in mptcp destroy sock(), which is not invoked in this code path. The fix involves moving the subflow sockets cleanup to the mptcp destroy common() helper, which is invoked in every msk cleanup path.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

AZL-70352

BDU:2026-05731

CVE-2022-50071

Affected Products

Astra Linux

Linux Kernel

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50071.json · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50071 · Vendor Advisory
• https://git.kernel.org/stable/c/c0bf3c6aa444a5ef44acc57ef6cfa53fd4fc1c9b · Patch
• https://git.kernel.org/stable/c/6139039c8fc5c9dbcdc3ad389b9a6d0cacb4d693 · Patch
• https://cve.org/CVERecord?id=CVE-2022-50071 · Security Note
• https://ubuntu.com/security/CVE-2022-50071 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-70352 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50071 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-50071 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-05731 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2022-50071 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50071 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-50071 · Vendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://access.redhat.com/security/cve/cve-2022-50071 · Note