What is CVE-2023-1476?

CVE-2023-1476 is a High severity Linux kernel vulnerability with a CVSS score of 7.0 out of 10, classified as a Use After Free flaw (CWE-416). CVE-2023-1476 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-1476?

CVE-2023-1476 has a CVSS score of 7.0 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2023-1476?

No patch is currently available for CVE-2023-1476. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2023-1476 actively exploited?

CVE-2023-1476 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-2023-1476

High

A use-after-free flaw was found in the Linux kernel’s mm/mremap memory address space accounting source code. This issue occurs due to a race condition between rmap walk and mremap, allowing a local user to crash the system or potentially escalate their privileges on the system.

Package Linux Kernel

Published 2023-11-03

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.0

out of 10

High

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2023-1476 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

The following references provide additional information about CVE-2023-1476 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Red Hat
https://access.redhat.com/errata/RHSA-2023:1659

Third Party Advisory
Red Hat
https://access.redhat.com/security/cve/CVE-2023-1476

Third Party Advisory
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=2176035

Issue Tracking
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=97113eb39fa7972722ff490b947d8af023e1f6a2
Patch

Details

CVE ID CVE-2023-1476

Severity High

CVSS score 7.0 / 10

CVSS version 3.1

Published 2023-11-03

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-1476?

CVE-2023-1476 is a High severity Linux kernel vulnerability with a CVSS score of 7.0 out of 10 , classified as an Use After Free flaw (CWE-416) . CVE-2023-1476 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-1476?

CVE-2023-1476 has a CVSS score of 7.0 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2023-1476?

No patch is currently available for CVE-2023-1476. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2023-1476 actively exploited?

No — CVE-2023-1476 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 →