Improper Validation of Specified Type of Input in Linux kernel - CVE-2026-98007
Published: September 28, 2026
Vulnerability identifier: #VU152475
CSH Severity: Low
CVSS v4: 5.6 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98007
CWE-ID: CWE-1287
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to cause a denial of service.
The vulnerability exists due to improper validation of helper argument types in the bpf_loop() nr_loops argument in the BPF verifier when a privileged BPF program passes a pointer value as the iteration count. A local privileged user can submit a privileged BPF program with a pointer-valued iteration count to trigger a verifier warning and kernel panic.
Exploitation requires a kernel configured with panic_on_warn enabled.
Affected software
Linux kernel
How to mitigate CVE-2026-98007
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3