PT-2026-26049 · Linux · Linux Kernel

Published 2026-01-01 · Updated 2026-04-20 · CVE-2026-23246

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:A/AC:L/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 The Linux kernel’s mac80211 wireless subsystem contains a flaw related to insufficient bounds checking of the link id variable within the ieee80211 ml reconfiguration function. The link id is derived from the ML Reconfiguration element, potentially ranging from 0 to 15. The link removal timeout array has a maximum of IEEE80211 MLD MAX NUM LINKS (15) elements, meaning an index of 15 is out of bounds. This can lead to a stack-based out-of-bounds write if subelements with link id values greater than or equal to IEEE80211 MLD MAX NUM LINKS are not skipped.

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

Exploit

Related Identifiers

CVE-2026-23246

Affected Products

Linux Kernel

References · 21

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23246.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-23246 · Security Note
• https://osv.dev/vulnerability/CVE-2026-23246 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-23246 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-23246 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23246 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23246 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23246 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2404-CVE-2026-23246 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-23246 · Security Note
• https://git.kernel.org/stable/c/f35ceec54d48e227fa46f8f97fd100a77b8eab15 · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://docs.bell-sw.com/security/cves/CVE-2026-23246 · Note
• https://git.kernel.org/stable/c/bfde158d5d1322c0c2df398a8d1ccce04943be2e · Note
• https://git.kernel.org/stable/c/162d331d833dc73a3e905a24c44dd33732af1fc5 · Note