What is CVE-2022-49000?

CVE-2022-49000 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.0 onward and patched in 5.10.158, 5.15.82, 6.0.12 and others. CVE-2022-49000 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49000?

CVE-2022-49000 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2022-49000?

Yes, CVE-2022-49000 has been patched. Fixed versions include 5.10.158, 5.15.82, 6.0.12 and others. If you are running Linux kernel 5.0 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49000 actively exploited?

CVE-2022-49000 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-49000

Medium

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix PCI device refcount leak in has_external_pci() for_each_pci_dev() is implemented by pci_get_device(). The comment of pci_get_device() says that it will increase the reference count for the returned pci_dev and also decrease the reference count for the input pci_dev @from if it is not NULL. If we break for_each_pci_dev() loop with pdev not NULL, we need to call pci_dev_put() to decrease the reference count. Add the missing pci_dev_put() before 'return true' to avoid reference count leak.

Package Linux Kernel

Published 2024-10-21

Last modified 2024-10-31

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 5.0 and later are affected. Fixed in 5.10.158, 5.15.82, 6.0.12, 6.1 and their respective stable series.

Affected from

≥ 5.0

Fixed in

✓ 5.10.158 5.10.x ✓ 5.15.82 5.15.x ✓ 6.0.12 6.0.x ✓ 6.1

References

The following references provide additional information about CVE-2022-49000 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/10ed7655a17f6a3eaecd1293830488259ccd5723
Patch
Kernel patch commit
https://git.kernel.org/stable/c/17f67414718e6aba123335a33b7d15aa594fff34
Patch
Kernel patch commit
https://git.kernel.org/stable/c/afca9e19cc720bfafc75dc5ce429c185ca93f31d
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2022-49000

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-10-21

Modified 2024-10-31

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49000?

CVE-2022-49000 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.0 onward and has been patched in 5.10.158, 5.15.82, 6.0.12 and others. CVE-2022-49000 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49000?

CVE-2022-49000 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2022-49000?

Yes — CVE-2022-49000 has been patched. Fixed versions include 5.10.158, 5.15.82, 6.0.12 and others. If you are running Linux kernel 5.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49000 actively exploited?

No — CVE-2022-49000 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.