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CVE-2019-12456

Date: May 30, 2019

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

Language: C

Severity Score

Related Resources (17)

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.html
https://support.f5.com/csp/article/K84310302?utm_source=f5support&utm_medium=RSS
https://nvd.nist.gov/vuln/detail/CVE-2019-12456
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
https://support.f5.com/csp/article/K84310302
https://security-tracker.debian.org/tracker/CVE-2019-12456
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OBJHGQXA4PQ5EOGCOXEH3KFDNVZ2I4X7/
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MDURACJVGIBIYBSGDZJTRDPX46H5WPZW/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OBJHGQXA4PQ5EOGCOXEH3KFDNVZ2I4X7/
https://lkml.org/lkml/2019/5/29/1164
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-12456
https://bugzilla.redhat.com/show_bug.cgi?id=1717182
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MDURACJVGIBIYBSGDZJTRDPX46H5WPZW/
https://support.f5.com/csp/article/K84310302?utm_source=f5support&%3Butm_medium=RSS
https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git/commit/?h=5.3/scsi-queue&id=86e5aca7fa2927060839f3e3b40c8bd65a7e8d1e
https://www.mend.io/vulnerability-database/CVE-2019-12456

Severity Score

Weakness Type (CWE)

Input Validation

CWE-20

Insufficient Information

NVD-CWE-noinfo

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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