CVE-2015-8660: linux linux_kernel
Vulnerability summary
CVE-2015-8660 is a high (CVSS 7.2) vulnerability in linux linux_kernel. EPSS estimates a 22.20% chance of exploitation in the next 30 days, higher than 97.6% of scored vulnerabilities. 4 public exploits are recorded.
Weaponized exploit (exploit-database, 02-11-2016)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 11 · Related 5Timeline
- 28-12-2015PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
5 scores · 3 sources · 3 versions- OSV · UbuntuEcosystem advisory · calculated6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
22.20%
Chance of exploitation in the next 30 days
Percentile
98%
Versus all other CVEs
30-day change
No change 0.00 pp
From 22.20% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
4 foundLinux Kernel (Ubuntu / Fedora / RedHat) - 'Overlayfs' Local Privilege Escalation (Metasploit)
Maturity: weaponized
Linux Kernel 4.3.3 (Ubuntu 14.04/15.10) - 'overlayfs' Local Privilege Escalation (1)
Maturity: weaponized
Linux Kernel 4.3.3 - 'overlayfs' Local Privilege Escalation (2)
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu2 products
- linux-lts-vivid< 3.19.0-43.49~14.04.1
- linux-lts-wily< 4.2.0-23.28~14.04.1
Debian1 product
- linux< 4.3.3-3
Linux1 product
- linux_kernel≥ 3.18, < 3.18.31 | ≥ 3.19, < 4.1.22 | ≥ 4.2, < 4.4
3 vendors · 4 products
References
31 links- www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htmlX Refsource CONFIRMThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00039.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00043.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.htmlX Refsource CONFIRMThird Party Advisory
- packetstormsecurity.com/files/135151/Ubuntu-14.04-LTS-15.10-overlayfs-Local-Root.htmlX Refsource MISCThird Party AdvisoryVDB Entry
- github.com/torvalds/linux/commit/acff81ec2c79492b180fade3c2894425cd35a545X Refsource CONFIRMVendor Advisory
Show all 31 references
- www.openwall.com/lists/oss-security/2015/12/23/5Mailing ListX Refsource MLISTThird Party AdvisoryREPORT
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00040.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
