CVE-2016-6198
medium
CVSS v3
5.5
CVSS v4 NEW
—
VIR risk
5.5
Description
The filesystem layer in the Linux kernel before 4.5.5 proceeds with post-rename operations after an OverlayFS file is renamed to a self-hardlink, which allows local users to cause a denial of service (system crash) via a rename system call, related to fs/namei.c and fs/open.c.
Predictions
Exploit likelihood
55%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 4.5.5-1 |
| debian | bullseye | fixed | 4.5.5-1 |
| debian | forky | fixed | 4.5.5-1 |
| debian | sid | fixed | 4.5.5-1 |
| debian | trixie | fixed | 4.5.5-1 |
| linux-kernel | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| oracle | vm_server | 3.4 | |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54d5ca871e72f2bb172ec9323497f01cd5091ec7
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9409e22acdfc9153f88d9b1ed2bd2a5b34d2d3ca
- http://rhn.redhat.com/errata/RHSA-2016-1847.html
- http://rhn.redhat.com/errata/RHSA-2016-1875.html
- http://rhn.redhat.com/errata/RHSA-2016-2574.html
- http://rhn.redhat.com/errata/RHSA-2016-2584.html
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5
- http://www.openwall.com/lists/oss-security/2016/07/11/8
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.securityfocus.com/bid/91709
- http://www.securitytracker.com/id/1036273
- https://bugzilla.redhat.com/show_bug.cgi?id=1355654
- https://github.com/torvalds/linux/commit/54d5ca871e72f2bb172ec9323497f01cd5091ec7
- https://github.com/torvalds/linux/commit/9409e22acdfc9153f88d9b1ed2bd2a5b34d2d3ca
- https://www.suse.com/security/cve/CVE-2016-6198.html
- https://security-tracker.debian.org/tracker/CVE-2016-6198
CWEs
CWE-284
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.