Cyber Resilience

CVE-2023-28466

Memory Safety in Linux Kernel 4.13 – 5.4.240

Published
16 March 2023
Modified
05 May 2025
Patch / advisory
CVSS Score v3.1 7.0
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0027 19th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2023-28466 is a high-severity NULL Pointer Dereference (CWE-476) vulnerability in Linux Linux Kernel. Its CVSS base score is 7.0 (High).

Operationally, ranked at the 19th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

do_tls_getsockopt in net/tls/tls_main.c in the Linux kernel through 6.2.6 lacks a lock_sock call, leading to a race condition (with a resultant use-after-free or NULL pointer dereference).

CWE(s)

Related Threats

CVEs Like This One

CVE-2023-32248Same product: Linux Linux Kernel
CVE-2023-1989Same product: Debian Debian Linux
CVE-2023-2898Same product: Debian Debian Linux
CVE-2023-32252Same product: Linux Linux Kernel
CVE-2023-3338Same product: Debian Debian Linux
CVE-2023-3212Same product: Debian Debian Linux
CVE-2023-35001Same product: Debian Debian Linux
CVE-2023-52585Same product: Debian Debian Linux
CVE-2023-1838Same product: Linux Linux Kernel
CVE-2023-3390Same product: Linux Linux Kernel

Affected Assets

linux
linux kernel
4.13 — 5.4.240 · 5.5 — 5.10.177 · 5.11 — 5.15.105
netapp
h300s
all versions
netapp
h410c
all versions
netapp
h410s
all versions
netapp
h500s
all versions
netapp
h700s
all versions
debian
debian linux
10.0

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 SDLC practices (static analysis, code review, safe coding standards) directly prevent NULL dereference bugs during development.

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 can detect NULL dereference defects before release.

prevents

Secure SDLC mandates defensive coding practices that can prevent NULL dereferences.

prevents

Application security requirements can specify input validation and pointer-safety rules.

prevents

Secure architecture principles encourage defensive design that avoids unsafe pointer use.

prevents

Secure coding standards directly require NULL-pointer checks and safe dereference patterns.

References