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CVE-2022-49376

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: scsi: sd: Fix potential NULL pointer dereference If sd_probe() sees an early error before sdkp->device is initialized, sd_zbc_r…

Published Feb 26, 2025CWE-476EPSS 0.27%

Overview

CVE-2022-49376 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

scsi: sd: Fix potential NULL pointer dereference

If sd_probe() sees an early error before sdkp->device is initialized,

sd_zbc_release_disk() is called. This causes a NULL pointer dereference

when sd_is_zoned() is called inside that function. Avoid this by removing

the call to sd_zbc_release_disk() in sd_probe() error path.

This change is safe and does not result in zone information memory leakage

because the zone information for a zoned disk is allocated only when

sd_revalidate_disk() is called, at which point sdkp->disk_dev is fully set,

resulting in sd_disk_release() being called when needed to cleanup a disk

zone information using sd_zbc_release_disk().

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/05fbde3a77a4f1d62e4c4428f384288c1f1a0be5Refgit.kernel.org/stable/c/0fcb0b131cc90c8f523a293d84c58d0c7273c96fRefgit.kernel.org/stable/c/3733439593ad12f7b54ae35c273ea6f15d692de3Refgit.kernel.org/stable/c/78f8e96df06e2d04d82d4071c299b59d28744f47Refgit.kernel.org/stable/c/c1f0187025905e9981000d44a92e159468b561a8

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49376?

CVE-2022-49376 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49376?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-49376?

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-2022-49376?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49376 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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