Cyber Resilience

CVE-2023-39192

Memory Safety in Linux Kernel ≤ 6.6

Published
09 October 2023
Modified
21 November 2024
Patch / advisory
CVSS Score v3.1 6.7
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L
EPSS Score 0.0040 32th percentile
Risk Priority 40 floored blend · peak EPSS

Summary

CVE-2023-39192 is a medium-severity Out-of-bounds Read (CWE-125) vulnerability in Linux Linux Kernel. Its CVSS base score is 6.7 (Medium).

Operationally, ranked at the 32th 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 the Netfilter subsystem in the Linux kernel. The xt_u32 module did not validate the fields in the xt_u32 structure. This flaw allows a local privileged attacker to trigger an out-of-bounds read by setting the size…

more

fields with a value beyond the array boundaries, leading to a crash or information disclosure.

CWE(s)

Related Threats

CVEs Like This One

CVE-2023-39193Same product: Fedoraproject Fedora
CVE-2023-39194Same product: Fedoraproject Fedora
CVE-2023-39189Same product: Fedoraproject Fedora
CVE-2023-3773Same product: Fedoraproject Fedora
CVE-2023-1073Same product: Fedoraproject Fedora
CVE-2023-2194Same product: Fedoraproject Fedora
CVE-2023-4133Same product: Fedoraproject Fedora
CVE-2023-3161Same product: Fedoraproject Fedora
CVE-2023-1206Same product: Fedoraproject Fedora
CVE-2023-1513Same product: Fedoraproject Fedora

Affected Assets

linux
linux kernel
≤ 6.6
redhat
enterprise linux
8.0
fedoraproject
fedora
38

Mitigating Controls

Mitigating Controls (NIST CSF 2.0) AI

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

PR.PS-06 mostly match
prevents

Secure-development practices such as bounds checking and memory-safe languages directly prevent out-of-bounds reads.

ID.RA-01 partial match
prevents

Vulnerability scanning and recording can discover instances of out-of-bounds reads after code is deployed.

PR.PS-02 partial match
prevents

Routine patching replaces vulnerable code containing out-of-bounds read flaws.

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.

detects

Security testing in development and acceptance includes fuzzing and static analysis that detect out-of-bounds read defects before release.

A.8.15 Logging partial match
detects

Logging can record evidence of an out-of-bounds read but does not prevent the weakness itself.

prevents

Secure development life cycle mandates input validation and bounds checking that directly prevent out-of-bounds reads.

prevents

Application security requirements include explicit bounds and memory-safety specifications that mitigate buffer over-reads.

prevents

Secure system architecture and engineering principles require memory-safe design patterns and runtime protections against out-of-bounds access.

prevents

Secure coding standards explicitly forbid unsafe pointer arithmetic and mandate bounds-checked reads, eliminating CWE-125.

References