CVE-2011-1750
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedMultiple heap-based buffer overflows in the virtio-blk driver (hw/virtio-blk.c) in qemu-kvm 0.14.0 allow local guest users to cause a denial of service (guest crash) and possibly gain privileges via a (1) write request to the virtio_blk_handle_write function or (2) read request to the virtio_blk_handle_read function that is not properly aligned.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceHeap-based buffer overflows in QEMU-KVM 0.14.0's virtio-blk driver (hw/virtio-blk.c) allow local guest users to trigger overflows via misaligned write requests to virtio_blk_handle_write or read requests to virtio_blk_handle_read, potentially causing guest crashes or privilege escalation.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 0.14.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Adjacent
- Complexity
- M
- Authentication
- Single
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:A/AC:M/Au:S/C:C/I:C/A:C
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify QEMU/KVM installation and versionRun command: qemu-system-x86_64 --version, kvm --version, or rpm -q qemu-kvm (on Red Hat systems) to determine the installed QEMU-KVM version numberAffected if The installed version is exactly 0.14.0
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Verify the QEMU-KVM package versionCheck the package metadata: dpkg -l qemu-kvm (Debian/Ubuntu) or rpm -qa | grep qemu-kvm (Red Hat/CentOS) to confirm the precise package versionAffected if The package version returned is 0.14.0
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Identify running virtual machines using virtio-blkRun: virsh list --all and for each VM, check the disk configuration with virsh dumpxml <vm-name> looking for <disk type='virtio'> or <driver name='qemu' type='raw'> elements in the disk configurationAffected if Any running or defined VM is configured with a virtio-blk disk device
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Confirm the specific vulnerable code path is in useExamine the QEMU process command line or configuration for active virtio-blk disk devices: ps aux | grep qemu or check the VM configuration file for block devices using the virtio-blk driver (virtio-blk-pci or virtio-blk device types)Affected if A VM is actively using a virtio-blk disk device while running on QEMU-KVM 0.14.0
A system is affected only if QEMU-KVM version 0.14.0 is installed AND at least one virtual machine is configured to use virtio-blk disk devices, as the vulnerability exists in the virtio-blk driver code path.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpdate qemu-kvm to a version with the fix for CVE-2011-1750; restrict or isolate untrusted virtual machines until patched.
- Consultation4.0 h
- Implementation6.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,312.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2011-1750 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2011-1750 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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