CVE-2011-1771: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

The cifs_close function in fs/cifs/file.c in the Linux kernel before 2.6.39 allows local users to cause a denial of service (NULL pointer dereference and BUG) or possibly have unspecified other impact by setting the O_DIRECT flag during an attempt to open a file on a CIFS filesystem.

Affected products

• Linux Linux Kernel: before 2.6.39 (fixed in 2.6.39)

Published 2011-09-06. Last modified 2026-06-16.