Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2022-48636

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup Fix Oops in dasd_alias_get_start_dev() function caused…

Published Apr 28, 2024CWE-476EPSS 0.24%

Overview

CVE-2022-48636 is a high-severity vulnerability. It was published on April 28, 2024 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:

s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup

Fix Oops in dasd_alias_get_start_dev() function caused by the pavgroup

pointer being NULL.

The pavgroup pointer is checked on the entrance of the function but

without the lcu->lock being held. Therefore there is a race window

between dasd_alias_get_start_dev() and _lcu_update() which sets

pavgroup to NULL with the lcu->lock held.

Fix by checking the pavgroup pointer with lcu->lock held.

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/2e473351400e3dd66f0b71eddcef82ee45a584c1Refgit.kernel.org/stable/c/49f401a98b318761ca2e15d4c7869a20043fbed4Refgit.kernel.org/stable/c/650a2e79d176db753654d3dde88e53a2033036acRefgit.kernel.org/stable/c/aaba5ff2742043705bc4c02fd0b2b246e2e16da1Refgit.kernel.org/stable/c/d3a67c21b18f33c79382084af556557c442f12a6Refgit.kernel.org/stable/c/d86b4267834e6d4af62e3073e48166e349ab1b70Refgit.kernel.org/stable/c/db7ba07108a48c0f95b74fabbfd5d63e924f992dRefgit.kernel.org/stable/c/f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20bRefgit.kernel.org/stable/c/2e473351400e3dd66f0b71eddcef82ee45a584c1Refgit.kernel.org/stable/c/49f401a98b318761ca2e15d4c7869a20043fbed4

How CyberStrike helps

Frequently asked questions

What is CVE-2022-48636?

CVE-2022-48636 is a high-severity vulnerability. It was published on April 28, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-48636?

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-2022-48636?

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-2022-48636?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-48636 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.

Related HIGH CVEs from 2022

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999