Always-Incorrect Control Flow Implementation in Linux kernel - CVE-2026-98046
Published: September 28, 2026
Vulnerability identifier: #VU152428
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98046
CWE-ID: CWE-670
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to install a file descriptor into an interrupted task.
The vulnerability exists due to improper execution-context validation in the bpf_btf_find_by_name_kind() helper prototype when invoking the helper from a non-sleepable BPF timer callback. A local user can invoke the helper from a BPF timer callback to install a file descriptor into an interrupted task.
Affected software
Linux kernel
How to mitigate CVE-2026-98046
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3