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CVE-2022-1055

7.8 · HIGH

A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain privilege escalation.

Published Mar 29, 2022CWE-416EPSS 0.50%

Overview

CVE-2022-1055 is a high-severity vulnerability. It was published on March 29, 2022 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

A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain privilege escalation. The exploit requires unprivileged user namespaces. We recommend upgrading past commit 04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5

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

Refpacketstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.htmlRefgit.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5Refkernel.dance/#04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5Refsecurity.netapp.com/advisory/ntap-20220506-0007/Refsyzkaller.appspot.com/bug?id=2212474c958978ab86525fe6832ac8102c309ffcRefpacketstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.htmlRefgit.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5Refkernel.dance/#04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5Refsecurity.netapp.com/advisory/ntap-20220506-0007/Refsyzkaller.appspot.com/bug?id=2212474c958978ab86525fe6832ac8102c309ffc

How CyberStrike helps

Frequently asked questions

What is CVE-2022-1055?

CVE-2022-1055 is a high-severity vulnerability. It was published on March 29, 2022 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-1055?

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-2022-1055?

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-2022-1055?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-1055 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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