Security Resilience

CVE-2023-1513

Redhat Enterprise Linux 7.0 … 9.0

Published
23 March 2023
Modified
25 February 2025
Patch / advisory
CVSS Score v3.1 3.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS Score 0.0023 13th percentile
Risk Priority 29 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-1513 is a low-severity Improper Initialization (CWE-665) vulnerability in Redhat Enterprise Linux. Its CVSS base score is 3.3 (Low).

Operationally, ranked at the 13th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

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.

CWE(s)

Related Threats

CVEs Like This One

CVE-2023-39198Same product: Fedoraproject Fedora
CVE-2023-4155Same product: Fedoraproject Fedora
CVE-2023-39189Same product: Fedoraproject Fedora
CVE-2023-1206Same product: Fedoraproject Fedora
CVE-2023-39192Same product: Fedoraproject Fedora
CVE-2023-39193Same product: Fedoraproject Fedora
CVE-2024-0607Same product: Fedoraproject Fedora
CVE-2024-0443Same product: Fedoraproject Fedora
CVE-2023-1073Same product: Fedoraproject Fedora
CVE-2023-6679Same product: Fedoraproject Fedora

Affected Assets

linux
linux kernel
≤ 6.2
fedoraproject
fedora
37
redhat
enterprise linux
7.0, 8.0, 9.0

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-665

Ensures shared resources are explicitly initialized or cleared on allocation, preventing exposure of prior contents to new users or processes.

addresses: CWE-665

Mandates that every instance begins in a known (presumably clean) state, eliminating reliance on residual or uninitialized state left by prior executions.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

blocks

A.8.25 mandates security requirements, checkpoints, secure coding, testing and developer capability in the SDLC which reaches improper initialization as a design/coding defect, but leaves a bounded remainder (e.g. initialization of third-party components or libraries chosen in procurement, and post-deployment configuration defaults).

blocks

A.8.27 mandates security-by-design principles (least privilege, default-deny, fail-securely, distrust-external-input, hardening) plus explicit design reviews that can catch and block many uninitialized-resource cases before they ship, but leaves a bounded remainder (e.g. vendor libraries, runtime-initialization bugs, or post-review code changes) that can still be present and exploitable.

prevents

Secure coding standards explicitly forbid uninitialized variables and mandate proper resource initialization before use.

finds

Security testing can detect uninitialized variables but does not itself enforce initialization practices.

blocks

defining, enforcing, and monitoring secure configuration templates (including defaults, disabled services, changed vendor passwords, minimized privileges) directly stops most improper-initialization cases from being exploitable; the bounded remainder is initialization logic inside custom application code that no configuration template reaches

Hardening callouts derived

DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.

  • No fine-grained STIG row for CWE-665, a class-level weakness. Rules are authored against its narrower children: CWE-770.

References