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CVE-2022-50405

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net/tunnel: wait until all sk_user_data reader finish before releasing the sock There is a race condition in vxlan that when de…

Published Sep 18, 2025CWE-476EPSS 0.18%

Overview

CVE-2022-50405 is a high-severity vulnerability. It was published on September 18, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

net/tunnel: wait until all sk_user_data reader finish before releasing the sock

There is a race condition in vxlan that when deleting a vxlan device

during receiving packets, there is a possibility that the sock is

released after getting vxlan_sock vs from sk_user_data. Then in

later vxlan_ecn_decapsulate(), vxlan_get_sk_family() we will got

NULL pointer dereference. e.g.

#0 [ffffa25ec6978a38] machine_kexec at ffffffff8c669757

#1 [ffffa25ec6978a90] __crash_kexec at ffffffff8c7c0a4d

#2 [ffffa25ec6978b58] crash_kexec at ffffffff8c7c1c48

#3 [ffffa25ec6978b60] oops_end at ffffffff8c627f2b

#4 [ffffa25ec6978b80] page_fault_oops at ffffffff8c678fcb

#5 [ffffa25ec6978bd8] exc_page_fault at ffffffff8d109542

#6 [ffffa25ec6978c00] asm_exc_page_fault at ffffffff8d200b62

[exception RIP: vxlan_ecn_decapsulate+0x3b]

RIP: ffffffffc1014e7b RSP: ffffa25ec6978cb0 RFLAGS: 00010246

RAX: 0000000000

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/303000c793f705d07b551eb7c1c27001c5b33c8dRefgit.kernel.org/stable/c/3cf7203ca620682165706f70a1b12b5194607dceRefgit.kernel.org/stable/c/588d0b8462f5ffed3e677e65639825b2678117abRefgit.kernel.org/stable/c/84e566d157cc22ad2da8bdd970495855fbf13d92Refgit.kernel.org/stable/c/91f09a776ae335ca836ed864b8f2a9461882a280Refgit.kernel.org/stable/c/9a6544343bba7da929d6d4a2dc44ec0f15970081Refgit.kernel.org/stable/c/b38aa7465411795e9e744b8d94633910497fec2aRefgit.kernel.org/stable/c/be34e79e0ae6adbf6e7e75ddaee9ad84795ab933Refgit.kernel.org/stable/c/e8316584b0a6c61c9c407631040c22712b26e38c

How CyberStrike helps

Frequently asked questions

What is CVE-2022-50405?

CVE-2022-50405 is a high-severity vulnerability. It was published on September 18, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-50405?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-50405?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-50405?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-50405 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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