What is CVE-2022-4378?

CVE-2022-4378 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10. CVE-2022-4378 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-4378?

CVE-2022-4378 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-2022-4378?

No patch is currently available for CVE-2022-4378. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2022-4378 actively exploited?

CVE-2022-4378 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-4378

High

A stack overflow flaw was found in the Linux kernel's SYSCTL subsystem in how a user changes certain kernel parameters and variables. This flaw allows a local user to crash or potentially escalate their privileges on the system.

Package Linux Kernel

Published 2023-01-05

Last modified 2025-04-10

CVSS version 3.1

Patch available

Awaiting data

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-131

CVE-2022-4378 is classified as CWE-131

See CWE-131 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2022-4378 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Packet Storm
http://packetstormsecurity.com/files/171289/Kernel-Live-Patch-Security-Notice-LNS-0092-1.html
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=2152548

Issue Tracking Third Party Advisory
Seclists
https://seclists.org/oss-sec/2022/q4/178

Mailing List Third Party Advisory
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-avoid-integer-type-confusion-in-get_proc_long.patch
Patch
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-proc_skip_spaces-shouldn-t-think-it-is-working-on-c-strings.patch
Patch

Details

CVE ID CVE-2022-4378

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2023-01-05

Modified 2025-04-10

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2022-4378?

CVE-2022-4378 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2022-4378 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-4378?

CVE-2022-4378 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-2022-4378?

No patch is currently available for CVE-2022-4378. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2022-4378 actively exploited?

No — CVE-2022-4378 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.