CVE-2026-98540

A flaw was found in the Linux kernel's function probe (fprobe) tracing component. This vulnerability can result in a Denial of Service (DoS) due to improper memory initialization. When tracing kernel functions, unused shadow stack space is left uncleared, causing return routines to parse leftover data from earlier calls as valid headers. A local user with tracing privileges can trigger this issue to run probe exit handlers unexpectedly, leading to kernel instability or a system crash.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.