CVE ID:	CVE-2019-12456
Description:	** DISPUTED ** An issue was discovered in the MPT3COMMAND case in _ctl_ioctl_main in drivers/scsi/mpt3sas/mpt3sas_ctl.c in the Linux kernel through 5.1.5. It allows local users to cause a denial of service or possibly have unspecified other impact by changing the value of ioc_number between two kernel reads of that value, aka a "double fetch" vulnerability. NOTE: a third party reports that this is unexploitable because the doubly fetched value is not used.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2019-12456 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OBJHGQXA4PQ5EOGCOXEH3KFDNVZ2I4X7/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MDURACJVGIBIYBSGDZJTRDPX46H5WPZW/ https://bugzilla.redhat.com/show_bug.cgi?id=1717182 https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git/commit/?h=5.3/scsi-queue&id=86e5aca7fa2927060839f3e3b40c8bd65a7e8d1e https://lkml.org/lkml/2019/5/29/1164 SuSE Security Announcement: openSUSE-SU-2019:1570 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html SuSE Security Announcement: openSUSE-SU-2019:1571 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.html SuSE Security Announcement: openSUSE-SU-2019:1579 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html