Description
The ovl_setattr function in fs/overlayfs/inode.c in the Linux kernel through 4.3.3 attempts to merge distinct setattr operations, which allows local users to bypass intended access restrictions and modify the attributes of arbitrary overlay files via a crafted application.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html ↗
- https://www.exploit-db.com/exploits/39166/ ↗
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00039.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00043.html ↗
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html ↗
- http://packetstormsecurity.com/files/135151/Ubuntu-14.04-LTS-15.10-overlayfs-Local-Root.html ↗
- http://www.securitytracker.com/id/1034548 ↗
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=acff81ec2c79492b180fade3c2894425cd35a545 ↗
- http://rhn.redhat.com/errata/RHSA-2016-1541.html ↗
- https://github.com/torvalds/linux/commit/acff81ec2c79492b180fade3c2894425cd35a545 ↗
- https://www.exploit-db.com/exploits/40688/ ↗
- http://www.openwall.com/lists/oss-security/2015/12/23/5 ↗
- http://rhn.redhat.com/errata/RHSA-2016-1539.html ↗
- http://www.ubuntu.com/usn/USN-2857-2 ↗
- http://rhn.redhat.com/errata/RHSA-2016-1532.html ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=1291329 ↗
- https://www.exploit-db.com/exploits/39230/ ↗
- http://www.ubuntu.com/usn/USN-2858-2 ↗
- http://www.ubuntu.com/usn/USN-2858-3 ↗
- http://www.ubuntu.com/usn/USN-2858-1 ↗
- http://www.ubuntu.com/usn/USN-2857-1 ↗
- http://www.securityfocus.com/bid/79671 ↗
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00040.html ↗