CVE-2026-72236

A flaw was found in the Linux kernel's s390 performance monitoring component s390/perfcpumcf. A userspace-controlled variable was used as an array index without proper speculation barriers. This could allow a local attacker to potentially exploit speculative execution, leading to information...

CVE-2026-72236

CVE-2026-72236 concerns the Linux kernel: on s390 architecture, in the perf_cpum_cf path, __hw_perf_event_init() was missing an array_index_nospec() barrier. The ev variable, controlled by userspace via event->attr.config, could be used as an array index after bounds checks without speculative...

CVE-2026-72236 s390/perf_cpum_cf: Add missing array_index_nospec() to __hw_perf_event_init()

In the Linux kernel, the following vulnerability has been resolved: s390/perfcpumcf: Add missing arrayindexnospec to hwperfeventinit ev variable is userspace controlled via event-attr.config and used as an array index after bounds checking, but without speculation barriers. Add the missing...