Copyright © 2012 Red Hat, Inc. All rights reserved. Low 2026-08-15T00:00:00 kernel: s390/diag: Add missing array_index_nospec() call to memtop_get_page_count() 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CWE-125

In the Linux kernel, the following vulnerability has been resolved: s390/diag: Add missing array_index_nospec() call to memtop_get_page_count() 'level' is user space controlled and used to read from an array. Add the missing array_index_nospec() call to prevent speculative execution.

A flaw was found in the Linux kernel's s390/diag component. A local user could exploit a missing bounds check when handling a user-controlled 'level' variable, which is used to read from an array. This vulnerability could lead to information disclosure through speculative execution, potentially allowing an attacker to access sensitive data.

Red Hat Enterprise Linux 10 Fix deferred 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 Fix deferred kernel Red Hat Enterprise Linux 9 Fix deferred kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-72011 https://nvd.nist.gov/vuln/detail/CVE-2026-72011 https://lore.kernel.org/linux-cve-announce/2026081508-CVE-2026-72011-9cd3@gregkh/T