PT-2025-54108 · Linux · Linux Kernel

Published 2023-04-12 · Updated 2025-12-31 · CVE-2023-54279

Positive Technologies (AI Summary)

CVSS v2.0

5.5

Medium

Base vector

AV:A/AC:L/Au:S/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The Linux kernel contains a flaw in the firmware handling mechanism. Specifically, the fw getenv function does not properly validate the environment list passed by the firmware, potentially leading to a null pointer dereference if an empty list is provided. This occurs because the function attempts to access the first entry of the environment list without checking if the list is empty.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2026-04174

CVE-2023-54279

Affected Products

Linux Kernel

References · 32

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54279.json · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-54279 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-54279 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-04174 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-54279 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-54279 · Security Note
• https://osv.dev/vulnerability/CVE-2023-54279 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-54279 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-54279 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-54279 · Security Note
• https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2 · Note
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.111 · Note
• https://git.kernel.org/stable/c/3ef93b7bd9e042db240843f24a80e14da38c6830 · Note
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.243 · Note
• https://git.kernel.org/stable/c/47e61cadc7a5f3dffd42d2d6fda81be163f1ab82 · Note