CVE-2023-40791
MEDIUMCVSS 6.3/10EPSS 0.45%
Last modified
CVE-2023-40791 is a medium-severity vulnerability rated 6.3/10 on the CVSS scale. 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.. EPSS estimates a 0.45% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 6.4.12 |
| Netapp | H300s Firmware | All versions |
| Netapp | H500s Firmware | All versions |
| Netapp | H700s Firmware | All versions |
| Netapp | H410s Firmware | All versions |
References
- https://lkml.org/lkml/2023/8/3/323Exploit, Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20231110-0009/Third Party Advisory
- https://lkml.org/lkml/2023/8/3/323Exploit, Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20231110-0009/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-40791?
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.
How severe is CVE-2023-40791?
CVE-2023-40791 has a CVSS score of 6.3/10 (MEDIUM severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.
How do I fix CVE-2023-40791?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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Are you affected by CVE-2023-40791?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST