What is CVE-2022-1055?

CVE-2022-1055 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 5.1.0 onward and patched in 5.17.0. CVE-2022-1055 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-1055?

CVE-2022-1055 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-2022-1055?

Yes, CVE-2022-1055 has been patched. Fixed versions include 5.17.0. If you are running Linux kernel 5.1.0 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-1055 actively exploited?

CVE-2022-1055 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-2022-1055

High

A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain privilege escalation. The exploit requires unprivileged user namespaces. We recommend upgrading past commit 04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5

Package Linux Kernel

Published 2022-03-29

Last modified 2026-08-13

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-2022-1055 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 5.1.0, 5.5.0, 5.11.0, 5.16.0 and later are affected. Fixed in 5.17.0 and their respective stable series.

Affected from

≥ 5.1.0 ≥ 5.5.0 ≥ 5.11.0 ≥ 5.16.0

Fixed in

✓ 5.17.0 5.17.x

References

5 total

Kernel
https://kernel.dance/#04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5

Exploit Patch Third Party Advisory
Syzkaller
https://syzkaller.appspot.com/bug?id=2212474c958978ab86525fe6832ac8102c309ffc

Exploit Patch Third Party Advisory
Kernel Git
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5

Patch Vendor Advisory
Packet Storm
http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html

Third Party Advisory VDB Entry
Security
https://security.netapp.com/advisory/ntap-20220506-0007/

Third Party Advisory

Details

CVE ID CVE-2022-1055

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2022-03-29

Modified 2026-08-13

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-1055?

CVE-2022-1055 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 5.1.0 onward and has been patched in 5.17.0. CVE-2022-1055 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-1055?

CVE-2022-1055 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-2022-1055?

Yes. CVE-2022-1055 has been patched. Fixed versions include 5.17.0. If you are running Linux kernel 5.1.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-1055 actively exploited?

No. CVE-2022-1055 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.