VDB
CVE-2015-4177
CVE-2015-4177
REJECTED
The collect_mounts function in fs/namespace.c in the Linux kernel before 4.0.5 does not properly consider that it may execute after a path has been unmounted, which allows local users to cause a denial of service (system crash) by leveraging user-namespace root access for an MNT_DETACH umount2 system call.
EPSS 0.04% · 13.3th percentile
Risk Scores
EPSS Score
0.04%
13.3th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:14.04:LTS | linux-lts-wily | 0 |
| Ubuntu:14.04:LTS | linux-lts-xenial | 0 |
| Ubuntu:16.04:LTS | linux-hwe | 0 |
| Ubuntu:16.04:LTS | linux-snapdragon | 0 |
| Ubuntu:14.04:LTS | linux-aws | 0 |
| Ubuntu:16.04:LTS | linux-gke | 0 |
| Ubuntu:16.04:LTS | linux-raspi2 | 0 |
| Ubuntu:16.04:LTS | linux | 0 |
| Ubuntu:16.04:LTS | linux-aws | 0 |
Exploit Intelligence
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cd4a40174b71acd021877341684d8bb1dc8ea4ae (circl)
- [oss-security] 20150529 CVE request Linux kernel: ns: user namespaces panic (circl)
- https://bugzilla.redhat.com/show_bug.cgi?id=1248486 (circl)
- https://github.com/torvalds/linux/commit/cd4a40174b71acd021877341684d8bb1dc8ea4ae (circl)
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.5 (circl)
- [oss-security] 20150529 Re: CVE request Linux kernel: ns: user namespaces panic (circl)
- [oss-security] 20150604 Re: Re: CVE request Linux kernel: ns: user namespaces panic (circl)
Timeline
- 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
- May 25, 2023 EPSS Score
- Jul 16, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2015-4177 third-party-advisory
- http://www.openwall.com/lists/oss-security/2015/05/29/5 third-party-advisory
- http://www.openwall.com/lists/oss-security/2015/06/04/9 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2015-4177 third-party-advisory