CVE-2016-6197
fs/overlayfs/dir.c in the OverlayFS filesystem implementation in the Linux kernel before 4.6 does not properly verify the upper dentry before proceeding with unlink and rename system-call processing, which allows local users to cause a denial of service…
Does this matter?
Lower severity and a low EPSS score (0.49%). Track it; it rarely justifies an emergency change on its own.
Description
fs/overlayfs/dir.c in the OverlayFS filesystem implementation in the Linux kernel before 4.6 does not properly verify the upper dentry before proceeding with unlink and rename system-call processing, which allows local users to cause a denial of service (system crash) via a rename system call that specifies a self-hardlink.
- CVSS 3.0
- 5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.49% probability · 40th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- oracle/linux · linux/linux kernel · oracle/vm server
- Source
- cve@mitre.org
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=11f3710417d026ea2f4fcf362d866342c5274185Issue Tracking, Patch
- http://rhn.redhat.com/errata/RHSA-2016-1847.html
- http://rhn.redhat.com/errata/RHSA-2016-1875.html
- http://www.openwall.com/lists/oss-security/2016/07/11/8Mailing List, Third Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.htmlThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htmlVendor Advisory
- http://www.securityfocus.com/bid/91709
- http://www.securitytracker.com/id/1036273
- http://www.ubuntu.com/usn/USN-3070-1
- http://www.ubuntu.com/usn/USN-3070-2
- http://www.ubuntu.com/usn/USN-3070-3
- http://www.ubuntu.com/usn/USN-3070-4
- https://bugzilla.redhat.com/show_bug.cgi?id=1355650Issue Tracking
- https://github.com/torvalds/linux/commit/11f3710417d026ea2f4fcf362d866342c5274185Issue Tracking, Patch
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=11f3710417d026ea2f4fcf362d866342c5274185Issue Tracking, Patch
- http://rhn.redhat.com/errata/RHSA-2016-1847.html
- http://rhn.redhat.com/errata/RHSA-2016-1875.html
- http://www.openwall.com/lists/oss-security/2016/07/11/8Mailing List, Third Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.htmlThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htmlVendor Advisory
- http://www.securityfocus.com/bid/91709
- http://www.securitytracker.com/id/1036273
- http://www.ubuntu.com/usn/USN-3070-1
- http://www.ubuntu.com/usn/USN-3070-2
- http://www.ubuntu.com/usn/USN-3070-3
- http://www.ubuntu.com/usn/USN-3070-4
- https://bugzilla.redhat.com/show_bug.cgi?id=1355650Issue Tracking
- https://github.com/torvalds/linux/commit/11f3710417d026ea2f4fcf362d866342c5274185Issue Tracking, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.