Vulnerability in Linux Kernel
CVE-2016-1576
The overlayfs implementation in the Linux kernel through 4.5.2 does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an overlayfs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.011 (66.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
- Linux Kernel
- Canonical Ubuntu Core — versions 15.04
- Canonical Ubuntu Linux — versions 12.04, 14.04, 15.10
- Canonical Ubuntu Touch — versions 15.04
Public proof-of-concept exploits
References
- launchpadlibrarian.net/235300093/0005-overlayfs-Be-more-careful-about-copying-u… (Patch, Mailing List, Third Party Advisory)
- launchpadlibrarian.net/235300225/0006-overlayfs-Propogate-nosuid-from-lower-and… (Patch, Mailing List, Third Party Advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Mailing List, Vendor Advisory)
- bugs.launchpad.net/bugs/1535150 (Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/02/24/8 (mailing-list, Mailing List, Third Party Advisory)
- people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1576.html (Third Party Advisory)
- www.halfdog.net/Security/2016/OverlayfsOverFusePrivilegeEscalation/ (Exploit, Third Party Advisory)
- www.openwall.com/lists/oss-security/2021/10/18/1 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-1576?
- CVE-2016-1576 is a high-severity vulnerability in Linux Kernel. CVSS score: 7.8/10. Published 2016-05-02.
- How severe is CVE-2016-1576?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2016-1576 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.