CVE-2023-1513 — A flaw was found in KVM
A flaw was found in KVM. When calling the KVM_GET_DEBUGREGS ioctl, on 32-bit systems, there might be some uninitialized portions of the kvm_debugregs structure that could be copied to userspace, causing an information leak.
Published
2023-03-23T00:00:00.000Z
Last modified
2025-02-25T19:33:10.636Z
01What is this vulnerability?
A flaw was found in KVM. When calling the KVM_GET_DEBUGREGS ioctl, on 32-bit systems, there might be some uninitialized portions of the kvm_debugregs structure that could be copied to userspace, causing an information leak.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / Linux kernel (KVM) | Fixed in kernel 6.2 |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2023-03-23T00:00:00.000Z
- Last modified: 2025-02-25T19:33:10.636Z
09References
- bugzilla.redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=2179892
- lore.kernel.org — https://lore.kernel.org/kvm/20230214103304.3689213-1-gregkh%40linuxfoundation.or…
- github.com — https://github.com/torvalds/linux/commit/2c10b61421a28e95a46ab489fd56c0f442ff695…
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
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