CVE-2015-2925
6.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
5.8 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
10.1%
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.”
Affected configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| linux:linux_kernel | linux linux kernel | le | 4.2.3 |
References
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=397d425dc26da728396e66d392d5dcb8dac30c37
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cde93be45a8a90d8c264c776fab63487b5038a65
lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.html
lists.opensuse.org/opensuse-security-announce/2015-12/msg00018.html
lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html
lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html
lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html
lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.html
lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.html
lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.html
lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.html
lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.html
lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.html
permalink.gmane.org/gmane.linux.kernel.containers/29173
permalink.gmane.org/gmane.linux.kernel.containers/29177
pkgs.fedoraproject.org/cgit/kernel.git/commit/?h=f22&id=520b64102de2f184036024b2a53de2b67463bd78
rhn.redhat.com/errata/RHSA-2015-2636.html
rhn.redhat.com/errata/RHSA-2016-0068.html
www.debian.org/security/2015/dsa-3364
www.debian.org/security/2015/dsa-3372
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.2.4
www.openwall.com/lists/oss-security/2015/04/04/4
www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
www.securityfocus.com/bid/73926
www.ubuntu.com/usn/USN-2792-1
www.ubuntu.com/usn/USN-2794-1
www.ubuntu.com/usn/USN-2795-1
www.ubuntu.com/usn/USN-2798-1
www.ubuntu.com/usn/USN-2799-1
bugzilla.redhat.com/show_bug.cgi?id=1209367
bugzilla.redhat.com/show_bug.cgi?id=1209373
github.com/torvalds/linux/commit/397d425dc26da728396e66d392d5dcb8dac30c37
github.com/torvalds/linux/commit/cde93be45a8a90d8c264c776fab63487b5038a65
Related
6.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
5.8 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
10.1%