What is CVE-2023-40791?

CVE-2023-40791 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.3 out of 10. CVE-2023-40791 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-40791?

CVE-2023-40791 has a CVSS score of 6.3 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H.

Is there a patch available for CVE-2023-40791?

No patch is currently available for CVE-2023-40791. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2023-40791 actively exploited?

CVE-2023-40791 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-40791

Medium

extract_user_to_sg in lib/scatterlist.c in the Linux kernel before 6.4.12 fails to unpin pages in a certain situation, as demonstrated by a WARNING for try_grab_page.

Package Linux Kernel

Published 2023-10-16

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

6.3

out of 10

Medium

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:N/I:H/A:H

References

The following references provide additional information about CVE-2023-40791 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.12

Release Notes
Lkml
https://lkml.org/lkml/2023/8/3/323

Exploit Mailing List Third Party Advisory
Security
https://security.netapp.com/advisory/ntap-20231110-0009/

Third Party Advisory
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f443fd5af5dbd531f880d3645d5dd36976cf087f
Patch
Kernel patch commit
https://lore.kernel.org/linux-crypto/20571.1690369076%40warthog.procyon.org.uk/
Patch

Details

CVE ID CVE-2023-40791

Severity Medium

CVSS score 6.3 / 10

CVSS version 3.1

Published 2023-10-16

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-40791?

CVE-2023-40791 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.3 out of 10 . CVE-2023-40791 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-40791?

CVE-2023-40791 has a CVSS score of 6.3 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H.
Is there a patch available for CVE-2023-40791?

No patch is currently available for CVE-2023-40791. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2023-40791 actively exploited?

No — CVE-2023-40791 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.