What is CVE-2023-0459?

CVE-2023-0459 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Release of Invalid Pointer or Reference flaw (CWE-763). CVE-2023-0459 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-0459?

CVE-2023-0459 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:H/I:N/A:N.

Is there a patch available for CVE-2023-0459?

No patch is currently available for CVE-2023-0459. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2023-0459 actively exploited?

CVE-2023-0459 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Release of Invalid Pointer or Reference (CWE-763)?

The product attempts to return a memory resource to the system but calls the wrong release function. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/763.html

CVE-2023-0459

Medium

Copy_from_user on 64-bit versions of the Linux kernel does not implement the __uaccess_begin_nospec allowing a user to bypass the "access_ok" check and pass a kernel pointer to copy_from_user(). This would allow an attacker to leak information. We recommend upgrading beyond commit 74e19ef0ff8061ef55957c3abd71614ef0f42f47

Package Linux Kernel

Published 2023-05-25

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

High

Integrity

None

Availability

None

Vector string

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

Weakness type

CWE-763

CVE-2023-0459 is a Release of Invalid Pointer or Reference vulnerability

What is Release of Invalid Pointer or Reference?

The product attempts to return a memory resource to the system but calls the wrong release function. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2023-0459 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://github.com/torvalds/linux/commit/4b842e4e25b12951fa10dedb4bc16bc47e3b850c
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/74e19ef0ff8061ef55957c3abd71614ef0f42f47
Patch

Details

CVE ID CVE-2023-0459

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2023-05-25

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-0459?

CVE-2023-0459 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Release of Invalid Pointer or Reference flaw (CWE-763) . CVE-2023-0459 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-0459?

CVE-2023-0459 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:H/I:N/A:N.
Is there a patch available for CVE-2023-0459?

No patch is currently available for CVE-2023-0459. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2023-0459 actively exploited?

No — CVE-2023-0459 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Release of Invalid Pointer or Reference (CWE-763)?

The product attempts to return a memory resource to the system but calls the wrong release function. View CWE-763 on MITRE CWE →