CVE-2026-31458

A flaw was found in the Linux kernel. A privileged local user can exploit this by manipulating the nrcontexts parameter in the mm/damon/sysfs interface to zero while the DAMON Data Access MONitor subsystem is active. This leads to a null pointer dereference when certain sysfs commands are...

UBUNTU-CVE-2026-31458

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: check contexts-nr before accessing contextsarr0 Multiple sysfs command paths dereference contextsarr0 without first verifying that kdamond-contexts-nr == 1. A user can set nrcontexts to 0 via sysfs while DAMON is...