CVE-2023-40791

Public Exploit

Description

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.

6.3

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.04%

Third-Party Advisory lkml.org Third-Party Advisory netapp.com

Affected: n/a n/a

References

Link	Tags
https://lkml.org/lkml/2023/8/3/323	mailing list third party advisory exploit
https://lore.kernel.org/linux-crypto/20571.1690369076%40warthog.procyon.org.uk/	patch mailing list
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f443fd5af5dbd531f880d3645d5dd36976cf087f	patch mailing list
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.12	release notes
https://security.netapp.com/advisory/ntap-20231110-0009/	third party advisory

Frequently Asked Questions

What is the severity of CVE-2023-40791?: CVE-2023-40791 has been scored as a medium severity vulnerability.
How to fix CVE-2023-40791?: To fix CVE-2023-40791, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-40791 being actively exploited in the wild?: It is possible that CVE-2023-40791 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.