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Vulnerability record · CVE-2023-1513 · published 23 March 2023

CVE-2023-1513: Linux kernel vulnerability

Linux · Linux Kernel

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.

3.3 CVSS 3.1 Low EPSS 0.23% · top 87.7% CWE-665 · CWE-665
3.3CVSS 3.1 base score
0.23%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.redhat.com/show_bug.cgi?id=2179892 Issue TrackingPatchThird Party Advisory
https://github.com/torvalds/linux/commit/2c10b61421a28e95a46ab489fd56c0f442ff6952 Patch
https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
https://lore.kernel.org/kvm/20230214103304.3689213-1-gregkh%40linuxfoundation.org/
https://bugzilla.redhat.com/show_bug.cgi?id=2179892 Issue TrackingPatchThird Party Advisory
https://github.com/torvalds/linux/commit/2c10b61421a28e95a46ab489fd56c0f442ff6952 Patch
https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
https://lore.kernel.org/kvm/20230214103304.3689213-1-gregkh%40linuxfoundation.org/

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-1513), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.