PT-2026-43675 · Linux · Linux Kernel

Published 2026-05-27 · Updated 2026-06-04 · CVE-2026-45841

Positive Technologies (AI Summary)

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

Description A divide-by-zero error exists in the netfilter component within the nf osf match one() function. The issue occurs in the OSF WSS MODULO branch when calculating ctx->window % f->wss.val without verifying if f->wss.val is zero. A user with CAP NET ADMIN privileges can add a malicious fingerprint via nfnetlink, which causes a kernel panic when a matching TCP SYN packet is processed.

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

Related Identifiers

CVE-2026-45841

OPENSUSE-SU-2026:10954-1

Affected Products

Linux Kernel

References · 294

• https://osv.dev/vulnerability/openSUSE-SU-2026:10954-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-45841 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-45841 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-45841 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-45841 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-45841 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-45841 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-45841 · Vendor Advisory
• https://suse.com/security/cve/CVE-2026-46149 · Note
• https://suse.com/security/cve/CVE-2026-46187 · Note
• https://suse.com/security/cve/CVE-2026-46037 · Note
• https://suse.com/security/cve/CVE-2026-46158 · Note
• https://suse.com/security/cve/CVE-2026-46204 · Note
• https://suse.com/security/cve/CVE-2026-45995 · Note
• https://suse.com/security/cve/CVE-2026-46242 · Note