CVE-2016-6522
medium
CVSS v3
5.5
CVSS v4 NEW
—
VIR risk
5.5
Description
Integer overflow in the uvm_map_isavail function in uvm/uvm_map.c in OpenBSD 5.9 allows local users to cause a denial of service (kernel panic) via a crafted mmap call, which triggers the new mapping to overlap with an existing mapping.
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 |
|---|---|---|---|
| freebsd | 5.9 | affected | |
References
- http://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/023_uvmisavail.patch.sig
- http://www.openwall.com/lists/oss-security/2016/08/02/12
- http://www.openwall.com/lists/oss-security/2016/08/02/8
- http://www.securityfocus.com/bid/92264
- http://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/023_uvmisavail.patch.sig
- http://www.openwall.com/lists/oss-security/2016/08/02/12
- http://www.openwall.com/lists/oss-security/2016/08/02/8
- http://www.securityfocus.com/bid/92264
CWEs
CWE-190
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.