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Vulnerability of Linux kernel: use after free via ipmi_si module

Synthesis of the vulnerability

An attacker can force the usage of a freed memory area via ipmi_si module of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Severity of this weakness: 2/4.
Creation date: 09/05/2019.
Références of this bulletin: 1103505, CERTFR-2019-AVI-361, CERTFR-2019-AVI-458, CERTFR-2019-AVI-603, CERTFR-2020-AVI-007, CVE-2019-11811, K01512680, openSUSE-SU-2019:1479-1, RHSA-2019:1873-01, RHSA-2019:1891-01, RHSA-2019:1959-01, RHSA-2019:1971-01, RHSA-2019:4057-01, RHSA-2019:4058-01, RHSA-2020:0036-01, SUSE-SU-2019:1550-1, SUSE-SU-2019:2430-1, VIGILANCE-VUL-29256.

Description of the vulnerability

An attacker can force the usage of a freed memory area via ipmi_si module of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
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This cybersecurity weakness impacts software or systems such as BIG-IP Hardware, TMOS, QRadar SIEM, Linux, openSUSE Leap, RHEL, SLES.

Our Vigil@nce team determined that the severity of this security vulnerability is medium.

The trust level is of type confirmed by the editor, with an origin of user shell.

An attacker with a expert ability can exploit this vulnerability bulletin.

Solutions for this threat

Linux kernel: version 5.0.4.
The version 5.0.4 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 4.19.31.
The version 4.19.31 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.14.108.
The version 4.14.108 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.9.165.
The version 4.9.165 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.4.177.
The version 4.4.177 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: patch for ipmi_si module.
A patch is indicated in information sources.

IBM QRadar SIEM: patch for Kernel.
A patch is indicated in information sources.

openSUSE Leap 15.1: new kernel packages.
New packages are available:
  openSUSE Leap 15.1: kernel 4.12.14-lp151.28.4.1

RHEL 6 MRG: new kernel-rt packages.
New packages are available:
  RHEL 6.0-6.10: kernel-rt 3.10.0-693.61.1.rt56.656.el6rt

RHEL 7.4: new kernel packages.
New packages are available:
  RHEL 7.4: kernel 3.10.0-693.61.1.el7

RHEL 7.5: new kernel packages.
New packages are available:
  RHEL 7.0-7.7: kernel 3.10.0-862.46.1.el7

RHEL 7: new kernel packages.
New packages are available:
  RHEL 7: kernel 3.10.0-957.27.2.el7

RHEL 7: new kernel-rt packages.
New packages are available:
  RHEL 7: kernel-rt 3.10.0-957.27.2.rt56.940.el7

RHEL 8.0: new kernel packages.
New packages are available:
  RHEL 8: kernel 4.18.0-80.7.1.el8_0

RHEL 8.0: new kernel-rt packages.
New packages are available:
  RHEL 8: kernel-rt 4.18.0-80.7.1.rt9.153.el8_0

SUSE LE 15 SP1: new kernel packages.
New packages are available:
  SUSE LE 15 SP1: kernel 4.12.14-197.4.1

SUSE LE 15 SP1: new kernel-source-rt packages.
New packages are available:
  SUSE LE 15 SP1: kernel-source-rt 4.12.14-14.8.1

Wind River Linux: solution (21/05/2019).
The solution is indicated in information sources.
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