Is CVE-2022-49147 in the CISA KEV catalog?

No. CVE-2022-49147 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-49147?

CVE-2022-49147 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2022-49147?

CVE-2022-49147 has an EPSS score of 0.24% (16th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-49147?

Upgrade linux on debian 12 to 5.17.3-1 or later.

CVE & CISA-KEV Catalog

CVE-2022-49147

MEDIUM

5.5

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: block: Fix the maximum minor value is blk_alloc_ext_minor() ida_alloc_range(..., min, max, ...) returns values from min to max, inclusive. So, NR_EXT_DEVT is a valid idx returned by blk_alloc_ext_minor(). This is an issue because in device_add_disk(), this value is used in: ddev->devt = MKDEV(disk->major, disk->first_minor); and NR_EXT_DEVT is '(1 << MINORBITS)'. So, should 'disk->first_minor' be NR_EXT_DEVT, it would overflow.

How to fix

Remediation Available

linuxDebian

Fixed in:5.17.3-1CVE-2022-49147

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.24%probability of exploitation in 30 days

16thpercentile

Low risk: more likely to be exploited than 16% of all known CVEs.

References

Patch4

Embed a live status badge for CVE-2022-49147

Markdown

[![CVE-2022-49147](https://tridentstack.com/cve/badge/CVE-2022-49147.svg)](https://tridentstack.com/cve/CVE-2022-49147)

HTML

<a href="https://tridentstack.com/cve/CVE-2022-49147"><img src="https://tridentstack.com/cve/badge/CVE-2022-49147.svg" alt="CVE-2022-49147"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-15.