PT-2026-37553 · Linux · Linux Kernel

Published 2026-05-06 · Updated 2026-05-07 · CVE-2026-43213

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

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

Description An issue exists in the rtw89 PCI Wi-Fi driver where the kernel fails to validate the sequence number of the TX release report. If the hardware reports an abnormal sequence number, it leads to an out-of-bounds access of the wd ring->pages array, resulting in a NULL pointer dereference and a system crash.

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

RCE

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2026-43213

Affected Products

Linux Kernel

References · 14

• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43213 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-43213 · Security Note
• https://git.kernel.org/stable/c/b342dd13aedccb0dd27365f6cc63a262f42394ce · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43213 · Vendor Advisory
• https://git.kernel.org/stable/c/957eda596c7665f2966970fd1dcc35fe299b38e8 · Patch
• https://git.kernel.org/stable/c/ef7fa19809b2d892d45da53f90ac698d13c367fd · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-43213 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43213 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43213 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-43213 · Vendor Advisory
• https://docs.bell-sw.com/security/cves/CVE-2026-43213 · Note
• https://twitter.com/windowsforum/status/2052322288003846500 · Twitter Post
• https://git.kernel.org/linus/957eda596c7665f2966970fd1dcc35fe299b38e8 · Note
• https://twitter.com/windowsforum/status/2052322108781310327 · Twitter Post