CVE-2022-48899

Medium

In the Linux kernel, the following vulnerability has been resolved: drm/virtio: Fix GEM handle creation UAF Userspace can guess the handle value and try to race GEM object creation with handle close, resulting in a use-after-free if we dereference the object after dropping the handle's reference. For that reason, dropping the handle's reference must be done *after* we are done dereferencing the object.

Package Linux Kernel
Published 2024-08-21
Last modified 2024-09-11
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

4.7

out of 10
Medium
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-416

CVE-2022-48899 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

Affected versions

Linux kernel versions 4.4 and later are affected. Fixed in 4.19.270, 5.4.229, 5.10.164, 5.15.89, 6.1.7, 6.2 and their respective stable series.

Affected from
≥ 4.4
Fixed in
✓ 4.19.270 4.19.x ✓ 5.4.229 5.4.x ✓ 5.10.164 5.10.x ✓ 5.15.89 5.15.x ✓ 6.1.7 6.1.x ✓ 6.2

References

The following references provide additional information about CVE-2022-48899 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

6 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2022-48899?

    CVE-2022-48899 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 4.4 onward and has been patched in 4.19.270, 5.4.229, 5.10.164 and others. CVE-2022-48899 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2022-48899?

    CVE-2022-48899 has a CVSS score of 4.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2022-48899?

    Yes — CVE-2022-48899 has been patched. Fixed versions include 4.19.270, 5.4.229, 5.10.164 and others. If you are running Linux kernel 4.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2022-48899 actively exploited?

    No — CVE-2022-48899 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

  • What is Use After Free (CWE-416)?

    The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. View CWE-416 on MITRE CWE →

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