Skip to content
Fencer Intel
high 7.8

CVE-2019-12456 json

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.

published 7y ago modified 4mo ago also EUVD-2019-4064

cvss
7.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 36%
public exploits
0
none known

Summary

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

Patch / fix

  • kernel-rt SLE Real Time 12 SP4 4.12.14-8.3.1
  • kernel-syms-rt SLE Real Time 12 SP4 4.12.14-8.3.1
  • kernel-rt_debug SLE Real Time 12 SP4 4.12.14-8.3.1
  • kernel-source-rt SLE Real Time 12 SP4 4.12.14-8.3.1
  • kernel-source-rt Real Time Module 15 SP1 4.12.14-14.8.1
  • kernel-rt Real Time Module 15 SP1 4.12.14-14.8.1
  • kernel-syms-rt Real Time Module 15 SP1 4.12.14-14.8.1
  • kernel-rt_debug Real Time Module 15 SP1 4.12.14-14.8.1

suse advisories SUSE-SU-2020:14354-1SUSE-SU-2019:2450-1SUSE-SU-2019:2430-1SUSE-SU-2019:1870-1SUSE-SU-2019:1855-1SUSE-SU-2019:1852-1

  • kernel-syms openSUSE Leap 15.0 4.12.14-lp150.12.64.1
  • kernel-obs-qa openSUSE Leap 15.0 4.12.14-lp150.12.64.1
  • kernel-source openSUSE Leap 15.0 4.12.14-lp150.12.64.1
  • kernel-default openSUSE Leap 15.0 4.12.14-lp150.12.64.1
  • kernel-vanilla openSUSE Leap 15.0 4.12.14-lp150.12.64.1
  • kernel-kvmsmall openSUSE Leap 15.0 4.12.14-lp150.12.64.1
  • kernel-obs-build openSUSE Leap 15.0 4.12.14-lp150.12.64.1
  • kernel-syms openSUSE Leap 15.1 4.12.14-lp151.28.7.1

opensuse advisories openSUSE-SU-2019:1579-1openSUSE-SU-2019:1571-1

Is CVE-2019-12456 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-12456 updated cvss 7.8

kernel: double fetch in the MPT3COMMAND case in _ctl_ioctl_main in drivers/scsi/mpt3sas/mpt3sas_ctl.c

  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, kernel-alt, python-perf, +9 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.