CVE-2016-6516
high
CVSS v3
7.4
CVSS v4 NEW
—
VIR risk
7.4
Description
Race condition in the ioctl_file_dedupe_range function in fs/ioctl.c in the Linux kernel through 4.7 allows local users to cause a denial of service (heap-based buffer overflow) or possibly gain privileges by changing a certain count value, aka a "double fetch" vulnerability.
Predictions
Exploit likelihood
72%
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 | 4.7.2-1 |
| debian | bullseye | fixed | 4.7.2-1 |
| debian | forky | fixed | 4.7.2-1 |
| debian | sid | fixed | 4.7.2-1 |
| debian | trixie | fixed | 4.7.2-1 |
| linux-kernel | affected | |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=10eec60ce79187686e052092e5383c99b4420a20
- http://www.openwall.com/lists/oss-security/2016/07/31/6
- http://www.securityfocus.com/bid/92259
- https://bugzilla.redhat.com/show_bug.cgi?id=1362457
- https://github.com/torvalds/linux/commit/10eec60ce79187686e052092e5383c99b4420a20
- https://www.suse.com/security/cve/CVE-2016-6516.html
- https://security-tracker.debian.org/tracker/CVE-2016-6516
CWEs
CWE-119 CWE-362
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.