VDB
CVE-2016-2853
CVE-2016-2853
PUBLISHED
The aufs module for the Linux kernel 3.x and 4.x does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an aufs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program.
EPSS 0.22% · 44.8th percentile
Risk Scores
EPSS Score
0.22%
44.8th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:Pro:FIPS-updates:24.04:LTS | linux-azure-fips | 0, *, 6.8.0-1044.50+fips1 |
| Ubuntu:Pro:Realtime:22.04:LTS | linux-intel-iot-realtime | 5.15.0-1034.36, 5.15.0-1033.35, 5.15.0-1028.33 |
| Ubuntu:Pro:FIPS:16.04:LTS | linux-fips | 4.4.0-1057.63, 4.4.0-1104.111, 4.4.0-1042.47 |
| Ubuntu:24.04:LTS | linux-azure-fde | 6.8.0-1041.48, 6.8.0-1044.51, 6.8.0-1046.53 |
| Ubuntu:Pro:FIPS-updates:24.04:LTS | linux-gcp-fips | 6.8.0-1042.45+fips1, 6.8.0-1041.43+fips1, 6.8.0-1040.42+fips1 |
| Ubuntu:Pro:FIPS:18.04:LTS | linux-fips | 0, 4.15.0-1011.12 |
| Ubuntu:Pro:FIPS:18.04:LTS | linux-gcp-fips | 0, 4.15.0-1001.1 |
| Ubuntu:24.04:LTS | linux-gke | 6.8.0-1029.33, 6.8.0-1024.28, 6.8.0-1007.10 |
| Ubuntu:Pro:FIPS-preview:22.04:LTS | linux-fips | 5.15.0-73.80+fips1, 0 |
| Ubuntu:20.04:LTS | linux-gkeop-5.15 | 5.15.0-1052.59~20.04.1, 5.15.0-1040.46~20.04.1, 5.15.0-1039.45~20.04.1 |
| Ubuntu:Pro:FIPS-updates:22.04:LTS | linux-gcp-fips | *, 0, 5.15.0-1091.100+fips1 |
| Ubuntu:25.10 | linux-realtime | 6.17.0-1004.5, 0, 6.17.0-1001.2 |
| Ubuntu:Pro:Realtime:22.04:LTS | linux-realtime | 5.15.0-1037.40, 5.15.0-1006.6, 5.15.0-1007.7 |
| Ubuntu:Pro:14.04:LTS | linux-lts-xenial | 4.4.0-138.164~14.04.1, *, * |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1018.23, 5.15.0-1017.22, 5.15.0-1013.17 |
| Ubuntu:Pro:FIPS-updates:24.04:LTS | linux-fips | 6.8.0-88.89+fips1, 6.8.0-86.87+fips1, 6.8.0-84.84+fips1 |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | linux-azure-fips | 4.15.0-2024.27, 4.15.0-2062.68, 4.15.0-2066.72 |
| Ubuntu:24.04:LTS | linux-gkeop | 6.8.0-1011.13, 6.8.0-1012.14, 6.8.0-1013.15 |
| Ubuntu:Pro:16.04:LTS | linux-aws | 4.4.0-1022.31, 4.4.0-1117.131, 4.4.0-1028.37 |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | linux-fips | 4.15.0-1037.42, 4.15.0-1038.43, 4.15.0-1040.45 |
…and 54 more
Exploit Intelligence
- http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces/ (vulncheck-nvd)
- http://www.openwall.com/lists/oss-security/2016/02/24/9 (vulncheck-nvd)
- Ubuntu 15.10 AUFS - allow_userns Fuse/Xattr User Namespaces Privilege Escalation Vulnerability (0day-today)
- Ubuntu 15.10 AUFS - allow_userns Fuse/Xattr User Namespaces Privilege Escalation Vulnerability (0day-today)
Timeline
- May 2, 2016 CVE Published
- Mar 29, 2017 PoC Published
- Feb 4, 2022 EPSS Score
- Mar 29, 2022 EPSS Score
- May 20, 2022 EPSS Score
- Jul 12, 2022 EPSS Score
- Sep 3, 2022 EPSS Score
- Oct 26, 2022 EPSS Score
- Dec 18, 2022 EPSS Score
- Feb 8, 2023 EPSS Score
- Mar 7, 2023 EPSS Score
- Apr 2, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2016-2853 third-party-advisory
- http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces/ third-party-advisory
- https://sourceforge.net/p/aufs/mailman/message/34864744/ third-party-advisory
- https://ubuntu.com/security/notices/USN-5343-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2016-2853 third-party-advisory