CVE-2023-1513

Severity: low (CVSS 3.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-03-23 · updated 2026-06-17
Weakness: CWE-665

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.

Affected products

Fedoraproject Fedora: 37
Linux kernel: before 6.2 — fixed in 6.2
Red Hat Enterprise Linux: 7.0, 8.0, 9.0

How to fix

Upgrade to a fixed version: Linux kernel 6.2. Check the vendor advisory for mitigations.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2179892
https://github.com/torvalds/linux/commit/2c10b61421a28e95a46ab489fd56c0f442ff6952
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
https://github.com/torvalds/linux/commit/2c10b61421a28e95a46ab489fd56c0f442ff6952
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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