PT-2026-27674 · Linux · Linux Kernel

Published 2026-01-01 · Updated 2026-03-29 · CVE-2026-23309

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 a NULL pointer dereference within the trigger data free() function. This occurs when trigger data alloc() fails and returns NULL, leading to an unsafe evaluation of data->cmd ops->set filter. The issue was identified through an experimental code review agent.

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

Exploit

Related Identifiers

CVE-2026-23309

Affected Products

Linux Kernel

References · 21

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23309.json · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23309 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-23309 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-23309 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23309 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-23309 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23309 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23309 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-23309 · Vendor Advisory
• https://git.kernel.org/stable/c/13dcd9269e225e4c4ceabdaeebe2ce4661b54c6e · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://twitter.com/infoflowcloud/status/2036764027716616296 · Twitter Post
• https://git.kernel.org/stable/c/59c15b9cc453b74beb9f04c6c398717e73612dc3 · Note
• https://twitter.com/CVEarity/status/2037928521537052845 · Twitter Post
• https://git.kernel.org/linus/457965c13f0837a289c9164b842d0860133f6274 · Note