A flaw was found in the `ni_atmio16d` driver within the Comedi (Comedi is a collection of drivers for data acquisition equipment) subsystem of the Linux kernel. This vulnerability occurs when an error during the driver's attach process causes the cleanup function (`atmio16d_detach()`) to be called with uninitialized device data. This can lead to undesired writes to low I/O port addresses or null pointer dereferences, potentially resulting in system instability or a denial of service (DoS) for a local user.

Red Hat Enterprise Linux 10 Not affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-31749 https://nvd.nist.gov/vuln/detail/CVE-2026-31749 https://lore.kernel.org/linux-cve-announce/2026050142-CVE-2026-31749-e7d2@gregkh/T