CVE-2015-2925

 

Published at: - 16-11-2015 12:59

Last modified: - 21-09-2022 08:44

Total changes: - 2

Description

The prepend_path function in fs/dcache.c in the Linux kernel before 4.2.4 does not properly handle rename actions inside a bind mount, which allows local users to bypass an intended container protection mechanism by renaming a directory, related to a "double-chroot attack."

Common Vulnerability Scoring System (CVSS)

AV:L/AC:M/Au:N/C:C/I:C/A:C

 

Verification logic

 

Reference

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cde93be45a8a90d8c264c776fab63487b5038a65
• https://github.com/torvalds/linux/commit/397d425dc26da728396e66d392d5dcb8dac30c37
• https://github.com/torvalds/linux/commit/cde93be45a8a90d8c264c776fab63487b5038a65
• [oss-security] 20150404 Re: Linux namespaces: It is possible to escape from bind mounts-
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.2.4
• https://bugzilla.redhat.com/show_bug.cgi?id=1209367
• [containers] 20150403 [PATCH review 17/19] vfs: Test for and handle paths that are unreachable from their mnt_root-
• http://pkgs.fedoraproject.org/cgit/kernel.git/commit/?h=f22&id=520b64102de2f184036024b2a53de2b67463bd78
• https://bugzilla.redhat.com/show_bug.cgi?id=1209373
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=397d425dc26da728396e66d392d5dcb8dac30c37
• [containers] 20150403 [PATCH review 19/19] vfs: Do not allow escaping from bind mounts.-
• http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
• http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
• 73926-
• SUSE-SU-2016:0380-
• SUSE-SU-2016:0386-
• SUSE-SU-2016:0384-
• SUSE-SU-2016:0337-
• SUSE-SU-2016:0335-
• SUSE-SU-2016:0387-
• SUSE-SU-2016:0434-
• SUSE-SU-2016:0381-
• SUSE-SU-2016:0383-
• USN-2794-1-
• USN-2799-1-
• SUSE-SU-2015:2194-
• RHSA-2015:2636-
• USN-2792-1-
• USN-2795-1-
• USN-2798-1-
• DSA-3372-
• SUSE-SU-2015:2292-
• DSA-3364-
• RHSA-2016:0068-

 

Keywords

NVD

 

CVE-2015-2925

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures