PT-2025-18592 · Linux+2 · Linux Kernel+2

Published 2023-11-07 · Updated 2025-05-02 · CVE-2022-49875

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Description A NULL pointer dereference issue has been resolved in the Linux kernel. The issue occurs when using bpftool to pin {PROG, MAP, LINK} without a FILE, resulting in a segmentation fault. This is caused by the lack of a FILE, which triggers a NULL pointer dereference in the strlen function. The corresponding stacktrace shows the issue occurring in the do pin function, specifically in the mount bpffs for pin and strlen(name) calls. The fix involves adding validation to the common process.

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

CVE-2022-49875

RHSA-2023:6583

RHSA-2023_6583

Affected Products

Astra Linux

Linux Kernel

Red Hat

References · 16

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49875.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-49875 · Security Note
• https://git.kernel.org/stable/c/34de8e6e0e1f66e431abf4123934a2581cb5f133 · Patch
• https://cve.org/CVERecord?id=CVE-2022-49875 · Security Note
• https://git.kernel.org/stable/c/6dcdd1b68b7f9333d48d48fc77b75e7f235f6a4a · Patch
• https://osv.dev/vulnerability/CVE-2022-49875 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49875 · Vendor Advisory
• https://git.kernel.org/stable/c/8c80b2fca4112d724dde477aed13f7b0510a2792 · Patch
• https://git.kernel.org/stable/c/da5161ba94c5e9182c301dd4f09c94f715c068bd · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49875 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49875 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-49875 · Vendor Advisory
• https://git.kernel.org/linus/34de8e6e0e1f66e431abf4123934a2581cb5f133 · Note
• https://twitter.com/CVEnew/status/1917950845628633277 · Twitter Post
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note