PT-2026-30140 · Linux · Linux Kernel

Published 2026-04-03 · Updated 2026-04-03 · CVE-2026-23445

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 XDP TX timestamps handling. Specifically, a page fault can occur when an XDP application requesting TX timestamping shuts down while the interface link is still active. This can lead to a kernel crash. The issue arises from stale xsk meta data being left behind during TX ring shutdown, causing the IRQ handler to attempt to access invalid memory locations.

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

Related Identifiers

CVE-2026-23445

Affected Products

Linux Kernel

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2026-23445 · Security Note
• https://twitter.com/CVEnew/status/2040111886092653010 · Twitter Post
• https://git.kernel.org/stable/c/45b33e805bd39f615d9353a7194b2da5281332df · Note
• https://git.kernel.org/stable/c/b02fa17d1744d19cd3820bdbf6ec5d85547977bf · Note
• https://git.kernel.org/stable/c/5e4c90c94eb766d70e30694b7fe66862aabaf24b · Note
• https://twitter.com/vuldb/status/2040100537123979678 · Twitter Post
• https://git.kernel.org/stable/c/31521c124e6488c4a81658e35199feb75a988d86 · Note