CVE-2016-6197
Published: 6 August 2016
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.
From the Ubuntu Security Team
It was discovered that the OverlayFS implementation in the Linux kernel did not properly verify dentry state before proceeding with unlink and rename operations. A local attacker could use this to cause a denial of service (system crash).
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4.10.0-19.21)
|
| bionic |
Not vulnerable
(4.13.0-16.19)
|
|
| cosmic |
Not vulnerable
(4.15.0-20.21)
|
|
| disco |
Not vulnerable
(4.18.0-10.11)
|
|
| precise |
Ignored
(was needed ESM criteria)
|
|
| trusty |
Ignored
(was needed ESM criteria)
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Ignored
(reached end-of-life)
|
|
| xenial |
Released
(4.4.0-36.55)
|
|
| yakkety |
Not vulnerable
(4.8.0-11.12)
|
|
| zesty |
Not vulnerable
(4.8.0-22.24)
|
|
|
Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
||
|
linux-armadaxp Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
(precise was needed)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-aws Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Not vulnerable
(4.15.0-1001.1)
|
|
| cosmic |
Not vulnerable
(4.15.0-1007.7)
|
|
| disco |
Not vulnerable
(4.18.0-1002.3)
|
|
| precise |
Does not exist
|
|
| trusty |
Not vulnerable
(4.4.0-1002.2)
|
|
| upstream |
Released
(4.6~rc1)
|
|
| xenial |
Not vulnerable
(4.4.0-1001.10)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-aws-hwe Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| xenial |
Not vulnerable
(4.15.0-1030.31~16.04.1)
|
|
|
linux-azure Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Not vulnerable
(4.15.0-1002.2)
|
|
| cosmic |
Not vulnerable
(4.15.0-1009.9)
|
|
| disco |
Not vulnerable
(4.18.0-1003.3)
|
|
| precise |
Does not exist
|
|
| trusty |
Not vulnerable
(4.15.0-1023.24~14.04.1)
|
|
| upstream |
Released
(4.6~rc1)
|
|
| xenial |
Not vulnerable
(4.11.0-1009.9)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-azure-edge Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-1002.2)
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| xenial |
Not vulnerable
(4.11.0-1009.9)
|
|
|
linux-euclid Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| xenial |
Not vulnerable
(4.4.0-9019.20)
|
|
| zesty |
Does not exist
|
|
|
linux-flo Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Ignored
(reached end-of-life)
|
|
| xenial |
Ignored
(abandoned)
|
|
| yakkety |
Ignored
(abandoned)
|
|
| zesty |
Does not exist
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Not vulnerable
(4.15.0-1001.1)
|
|
| cosmic |
Not vulnerable
(4.15.0-1006.6)
|
|
| disco |
Not vulnerable
(4.18.0-1002.3)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| xenial |
Not vulnerable
(4.10.0-1004.4)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-gcp-edge Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.18.0-1004.5~18.04.1)
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gke Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Not vulnerable
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| xenial |
Not vulnerable
(4.4.0-1003.3)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Ignored
(reached end-of-life)
|
|
| xenial |
Ignored
(abandoned)
|
|
| yakkety |
Ignored
(abandoned)
|
|
| zesty |
Ignored
(abandoned)
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Not vulnerable
(4.18.0-13.14~18.04.1)
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| xenial |
Not vulnerable
(4.8.0-36.36~16.04.1)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Not vulnerable
(5.0.0-13.14~18.04.2)
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| xenial |
Not vulnerable
(4.8.0-36.36~16.04.1)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-kvm Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Not vulnerable
(4.15.0-1002.2)
|
|
| cosmic |
Not vulnerable
(4.15.0-1008.8)
|
|
| disco |
Not vulnerable
(4.18.0-1003.3)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| xenial |
Not vulnerable
(4.4.0-1004.9)
|
|
| zesty |
Does not exist
|
|
|
linux-linaro-omap Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
(precise was ignored [abandoned])
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-linaro-shared Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
(precise was ignored [abandoned])
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-linaro-vexpress Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
(precise was ignored [abandoned])
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-quantal Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
(precise was ignored [end-of-life])
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-lts-raring Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
(precise was ignored [end-of-life])
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-saucy Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
(precise was ignored [end-of-life])
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Ignored
(was needed ESM criteria)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end-of-life])
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [was needed now end-of-life])
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end-of-life])
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Released
(4.4.0-36.55~14.04.1)
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-maguro Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-mako Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Ignored
(reached end-of-life)
|
|
| xenial |
Ignored
(abandoned)
|
|
| yakkety |
Ignored
(abandoned)
|
|
| zesty |
Does not exist
|
|
|
linux-manta Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Ignored
(reached end-of-life)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Not vulnerable
(4.15.0-1002.3)
|
|
| cosmic |
Not vulnerable
(4.15.0-1004.5)
|
|
| disco |
Not vulnerable
(4.15.0-1021.24)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| xenial |
Not vulnerable
(4.13.0-1008.9)
|
|
| zesty |
Does not exist
|
|
|
linux-oracle Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-1007.9)
|
| cosmic |
Not vulnerable
(4.15.0-1007.9)
|
|
| disco |
Not vulnerable
(4.15.0-1007.9)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| xenial |
Not vulnerable
(4.15.0-1007.9~16.04.1)
|
|
|
linux-qcm-msm Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
(precise was ignored [abandoned])
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4.10.0-1004.6)
|
| bionic |
Not vulnerable
(4.13.0-1005.5)
|
|
| cosmic |
Not vulnerable
(4.15.0-1010.11)
|
|
| disco |
Not vulnerable
(4.18.0-1005.7)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Ignored
(reached end-of-life)
|
|
| xenial |
Released
(4.4.0-1021.27)
|
|
| yakkety |
Not vulnerable
(4.8.0-1012.14)
|
|
| zesty |
Not vulnerable
(4.8.0-1013.15)
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4.4.0-1050.54)
|
| bionic |
Not vulnerable
(4.4.0-1077.82)
|
|
| cosmic |
Does not exist
|
|
| disco |
Not vulnerable
(5.0.0-1010.10)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Released
(4.4.0-1024.27)
|
|
| yakkety |
Not vulnerable
(4.4.0-1029.32)
|
|
| zesty |
Not vulnerable
(4.4.0-1029.32)
|
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
(precise was needed)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.6~rc1)
|
|
| wily |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6197
- http://openwall.com/lists/oss-security/2016/07/11/7
- https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/syscalls/rename/rename13.c
- https://ubuntu.com/security/notices/USN-3070-1
- https://ubuntu.com/security/notices/USN-3070-4
- https://ubuntu.com/security/notices/USN-3070-3
- https://ubuntu.com/security/notices/USN-3070-2
- NVD
- Launchpad
- Debian