Type Confusion in Linux kernel - CVE-2026-98062
Published: September 28, 2026
Vulnerability identifier: #VU152391
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98062
CWE-ID: CWE-843
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper type handling in the signal_generate and signal_deliver tracepoints when tp_btf programs access the siginfo argument. A local user can trigger signal tracepoint processing with a tp_btf program that dereferences the argument to cause a denial of service.
The signal_generate tracepoint can execute in timer interrupt context.
Affected software
Linux kernel
How to mitigate CVE-2026-98062
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3