CVE-2011-1771 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7797069305d13252fd66cf722aa8f2cbeb3c95cd http://marc.info/?l=linux-cifs&m=130204357001849&w=2 http://marc.info/?l=linux-cifs&m=130204730006155&w=2 http://securityreason.com/securityalert/8367 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39 http://www.openwall.com/lists/oss-security/2011/05/09/2 https://bugzilla.redhat.com/show_bug.cgi?id=703016

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8