CVE-2016-1576
HIGH
7.8
CVSS Score
Published: May 2, 2016 at 10:00 AM UTC
Updated: June 17, 2026 at 12:42 AM UTC
4 products affected across 2 vendorsLinux KernelUbuntu LinuxUbuntu Core
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Severity
HIGH7.8
Exploit prediction
EPSS 1%
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9f57ebcba563e0cd532926cab83c92bb4d79360
- https://launchpadlibrarian.net/235300093/0005-overlayfs-Be-more-careful-about-copying-up-sxid-file.patch
- https://launchpadlibrarian.net/235300225/0006-overlayfs-Propogate-nosuid-from-lower-and-upper-moun.patch
References (8)
x_refsource_MISCMailing ListPatchVendor Advisory
Source: [email protected]
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9f57ebcba563e0cd532926cab83c92bb4d79360x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1576.htmlx_refsource_MISCExploitThird Party Advisory
Source: [email protected]
http://www.halfdog.net/Security/2016/OverlayfsOverFusePrivilegeEscalation/Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2016/02/24/8Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/10/18/1x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://bugs.launchpad.net/bugs/1535150x_refsource_MISCMailing ListPatchThird Party Advisory
Source: [email protected]
https://launchpadlibrarian.net/235300093/0005-overlayfs-Be-more-careful-about-copying-up-sxid-file.patchx_refsource_MISCMailing ListPatchThird Party Advisory
Source: [email protected]
https://launchpadlibrarian.net/235300225/0006-overlayfs-Propogate-nosuid-from-lower-and-upper-moun.patchCVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
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