CVE-2026-80550

A flaw was found in the s390/vfioccw component of the Linux kernel. The ccwchaincalclength routine, which counts channel command words CCWs, incorrectly checked array boundaries. This could lead to an out-of-bounds read, where the system attempts to access memory beyond its allocated limits. Such...

CVE-2026-80550

In the Linux kernel, the following vulnerability has been resolved: s390/vfioccw: Fix out of bounds check on CCW array The routine ccwchaincalclength counts the number of channel command words CCWs that are chained together in a single channel program, and rejects anything larger than...

CVE-2026-80550 s390/vfio_ccw: Fix out of bounds check on CCW array

In the Linux kernel, the following vulnerability has been resolved: s390/vfioccw: Fix out of bounds check on CCW array The routine ccwchaincalclength counts the number of channel command words CCWs that are chained together in a single channel program, and rejects anything larger than...