What is CVE-2022-48771?

CVE-2022-48771 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 4.14 onward and patched in 4.14.264, 4.19.227, 5.4.175 and others. CVE-2022-48771 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-48771?

CVE-2022-48771 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2022-48771?

Yes, CVE-2022-48771 has been patched. Fixed versions include 4.14.264, 4.19.227, 5.4.175 and others. If you are running Linux kernel 4.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-48771 actively exploited?

CVE-2022-48771 has not been confirmed as actively exploited and is not listed in the CISA 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. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2022-48771

High

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Fix stale file descriptors on failed usercopy A failing usercopy of the fence_rep object will lead to a stale entry in the file descriptor table as put_unused_fd() won't release it. This enables userland to refer to a dangling 'file' object through that still valid file descriptor, leading to all kinds of use-after-free exploitation scenarios. Fix this by deferring the call to fd_install() until after the usercopy has succeeded.

Package Linux Kernel

Published 2024-06-20

Last modified 2025-01-06

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2022-48771 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 4.14 and later are affected. Fixed in 4.14.264, 4.19.227, 5.4.175, 5.10.95, 5.15.18, 5.16.4, 5.17 and their respective stable series.

Affected from

≥ 4.14

Fixed in

✓ 4.14.264 4.14.x ✓ 4.19.227 4.19.x ✓ 5.4.175 5.4.x ✓ 5.10.95 5.10.x ✓ 5.15.18 5.15.x ✓ 5.16.4 5.16.x ✓ 5.17

References

7 total

Kernel Git
https://git.kernel.org/stable/c/0008a0c78fc33a84e2212a7c04e6b21a36ca6f4d

Patch
Kernel Git
https://git.kernel.org/stable/c/1d833b27fb708d6fdf5de9f6b3a8be4bd4321565

Patch
Kernel Git
https://git.kernel.org/stable/c/6066977961fc6f437bc064f628cf9b0e4571c56c

Patch
Kernel Git
https://git.kernel.org/stable/c/84b1259fe36ae0915f3d6ddcea6377779de48b82

Patch
Kernel Git
https://git.kernel.org/stable/c/a0f90c8815706981c483a652a6aefca51a5e191c

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2022-48771

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-06-20

Modified 2025-01-06

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-48771?

CVE-2022-48771 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 4.14 onward and has been patched in 4.14.264, 4.19.227, 5.4.175 and others. CVE-2022-48771 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-48771?

CVE-2022-48771 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2022-48771?

Yes. CVE-2022-48771 has been patched. Fixed versions include 4.14.264, 4.19.227, 5.4.175 and others. If you are running Linux kernel 4.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-48771 actively exploited?

No. CVE-2022-48771 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.