What is CVE-2022-42703?

CVE-2022-42703 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Use After Free flaw (CWE-416). CVE-2022-42703 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-42703?

CVE-2022-42703 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-2022-42703?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2022-42703 patch availability.

Is CVE-2022-42703 actively exploited?

CVE-2022-42703 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-2022-42703

Medium

mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.

Package Linux Kernel

Published 2022-10-09

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

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

Weakness type

CWE-416

CVE-2022-42703 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

References

5 total

Bugs
https://bugs.chromium.org/p/project-zero/issues/detail?id=2351

Exploit Mailing List Third Party Advisory
Googleprojectzero
https://googleprojectzero.blogspot.com/2022/12/exploiting-CVE-2022-42703-bringing-back-the-stack-attack.html

Exploit Technical Description Third Party Advisory
Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.7

Mailing List Patch Vendor Advisory
Kernel Git
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2555283eb40df89945557273121e9393ef9b542b

Mailing List Patch Vendor Advisory
GitHub
https://github.com/torvalds/linux/commit/2555283eb40df89945557273121e9393ef9b542b

Patch Third Party Advisory

Details

CVE ID CVE-2022-42703

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2022-10-09

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2022-42703?

CVE-2022-42703 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Use After Free flaw (CWE-416) . CVE-2022-42703 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-42703?

CVE-2022-42703 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-2022-42703?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2022-42703 patch availability.
Is CVE-2022-42703 actively exploited?

No. CVE-2022-42703 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.