PT-2026-6110 · Linux · Linux Kernel

Published 2026-01-01 · Updated 2026-02-04 · CVE-2026-23040

Positive Technologies (AI Summary)

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

Description A flaw exists in the Linux kernel related to wifi and mac80211 hwsim. A typo in frequency notification could lead to a NULL pointer dereference in the cfg80211 next nan dw notif function. The notification incorrectly specifies a frequency of 5475 MHz, which is not a valid channel, instead of the correct frequency of 5745 MHz corresponding to channel 149.

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

Exploit

Related Identifiers

CVE-2026-23040

Affected Products

Linux Kernel

References · 13

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23040.json · Exploit
• https://osv.dev/vulnerability/CVE-2026-23040 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-23040 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23040 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23040 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-23040 · Security Note
• https://ubuntu.com/security/CVE-2026-23040 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-23040 · Security Note
• https://t.me/CVEtracker/43731 · Telegram Post
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://git.kernel.org/linus/333418872bfecf4843f1ded7a4151685dfcf07d5 · Note
• https://git.kernel.org/stable/c/333418872bfecf4843f1ded7a4151685dfcf07d5 · Note
• https://git.kernel.org/stable/c/1251bbdb8f5b2ea86ca9b4268a2e6aa34372ab33 · Note