CVE-2023-40791: Linux Kernel

Medium severity, CVSS 6.3. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux Kernel: before 6.4.12 (fixed in 6.4.12)
• Netapp h300s Firmware: affected versions not specified
• Netapp h410s Firmware: affected versions not specified
• Netapp h500s Firmware: affected versions not specified
• Netapp h700s Firmware: affected versions not specified

Published 2023-10-16. Last modified 2026-06-17.