CVE-2016-9777
Description
KVM in the Linux kernel before 4.8.12, when I/O APIC is enabled, does not properly restrict the VCPU index, which allows guest OS users to gain host OS privileges or cause a denial of service (out-of-bounds array access and host OS crash) via a crafted interrupt request, related to arch/x86/kvm/ioapic.c and arch/x86/kvm/ioapic.h.
Predictions
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 |
|---|---|---|---|
| debian | bookworm | fixed | 4.8.15-1 |
| debian | bullseye | fixed | 4.8.15-1 |
| debian | forky | fixed | 4.8.15-1 |
| debian | sid | fixed | 4.8.15-1 |
| debian | trixie | fixed | 4.8.15-1 |
| linux-kernel | affected | 4.8.12 |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.12
- http://www.openwall.com/lists/oss-security/2016/12/02/2
- http://www.securityfocus.com/bid/94640
- https://bugzilla.redhat.com/show_bug.cgi?id=1400804
- https://github.com/torvalds/linux/commit/81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755
- https://security-tracker.debian.org/tracker/CVE-2016-9777
CWEs
CWE-125
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.