CVE-2026-46257 clocksource/drivers/timer-sp804: Fix an Oops when read_current_timer is called on ARM32 platforms where the SP804 is not registered as the sched_clock.

In the Linux kernel, the following vulnerability has been resolved: clocksource/drivers/timer-sp804: Fix an Oops when readcurrenttimer is called on ARM32 platforms where the SP804 is not registered as the schedclock. On SP804, the delay timer shares the same clkevt instance with schedclock. On so...

CVE-2026-46257

The CVE-2026-46257 entry concerns the Linux kernel SP804 timer on ARM32. The root cause was that the delay timer shared a clkevt instance with sched_clock; when sp804_clocksource_and_sched_clock_init used use_sched_clock != 1, sched_clkevt was not properly initialized, and read_current_timer invo...