Improper handling of exceptional conditions in Linux kernel - CVE-2026-97481
Published: September 24, 2026
Vulnerability identifier: #VU152006
CSH Severity: Low
CVSS v4: 4.1 [CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97481
CWE-ID: CWE-755
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an attacker with physical access to cause a denial of service.
The vulnerability exists due to improper handling of FIFO error interrupts in the 8250 serial driver when the serial interface receives a flood of messages during startup and encounters a FIFO error with no data ready. An attacker with physical access can send a flood of messages to the serial interface during startup to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-97481
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3