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Vulnerability of Linux kernel: memory leak via perf_event_parse_addr_filter

Synthesis of the vulnerability 

An attacker can create a memory leak via perf_event_parse_addr_filter() of the Linux kernel, in order to trigger a denial of service.
Vulnerable software: Debian, Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this announce: 1/4.
Creation date: 09/11/2020.
Références of this computer vulnerability: CERTFR-2020-AVI-769, CERTFR-2020-AVI-776, CERTFR-2020-AVI-784, CERTFR-2020-AVI-794, CERTFR-2020-AVI-811, CERTFR-2020-AVI-834, CERTFR-2021-AVI-006, CERTFR-2021-AVI-064, CERTFR-2021-AVI-149, CVE-2020-25704, DLA-2483-1, DLA-2494-1, openSUSE-SU-2020:1906-1, openSUSE-SU-2020:2034-1, openSUSE-SU-2020:2112-1, openSUSE-SU-2020:2260-1, openSUSE-SU-2021:0242-1, SUSE-SU-2020:3484-1, SUSE-SU-2020:3507-1, SUSE-SU-2020:3512-1, SUSE-SU-2020:3513-1, SUSE-SU-2020:3522-1, SUSE-SU-2020:3532-1, SUSE-SU-2020:3544-1, SUSE-SU-2020:3713-1, SUSE-SU-2020:3715-1, SUSE-SU-2020:3717-1, SUSE-SU-2020:3748-1, USN-4679-1, USN-4710-1, USN-4711-1, USN-4751-1, USN-4752-1, VIGILANCE-VUL-33853.

Description of the vulnerability 

An attacker can create a memory leak via perf_event_parse_addr_filter() of the Linux kernel, in order to trigger a denial of service.
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This vulnerability note impacts software or systems such as Debian, Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this cybersecurity vulnerability is low.

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

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a technician ability can exploit this computer threat note.

Solutions for this threat 

Linux kernel: version 5.9.7.
The version 5.9.7 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 5.4.76.
The version 5.4.76 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v5.x/

Linux kernel: version 4.19.156.
The version 4.19.156 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.14.207.
The version 4.14.207 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

Linux kernel: version 4.9.244.
The version 4.9.244 is fixed:
  https://cdn.kernel.org/pub/linux/kernel/v4.x/

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

Debian 9: new linux-4.19 packages (10/12/2020).
New packages are available:
  Debian 9: linux-4.19 4.19.160-2~deb9u1

Debian 9: new linux packages.
New packages are available:
  Debian 9: linux 4.9.246-2

openSUSE Leap 15.1: new kernel packages.
New packages are available:
  openSUSE Leap 15.1: kernel-default 4.12.14-lp151.28.83.1

openSUSE Leap 15.2: new kernel packages (13/11/2020).
New packages are available:
  openSUSE Leap 15.2: kernel 5.3.18-lp152.50.1

openSUSE Leap 15.2: new kernel packages (15/12/2020).
New packages are available:
  openSUSE Leap 15.2: kernel 5.3.18-lp152.57.1.lp152.8.17.1

openSUSE Leap 15.2: new kernel packages (30/11/2020).
New packages are available:
  openSUSE Leap 15.2: kernel 5.3.18-lp152.50.1.lp152.8.10.1

openSUSE Leap 15.2: new kernel-rt packages.
New packages are available:
  openSUSE Leap 15.2: kernel-rt 5.3.18-lp152.3.5.1

SUSE LE 12 SP4: new kernel-default packages.
New packages are available:
  SUSE LE 12 SP4: kernel-default 4.12.14-95.65.1

SUSE LE 12 SP5: new kernel-azure packages (09/12/2020).
New packages are available:
  SUSE LE 12 SP5: kernel-azure 4.12.14-16.38.1

SUSE LE 12 SP5: new kernel packages (09/12/2020).
New packages are available:
  SUSE LE 12 SP5: kernel 4.12.14-122.54.1

SUSE LE 12 SP5: new kernel-rt packages.
New packages are available:
  SUSE LE 12 SP5: kernel-rt 4.12.14-10.22.1

SUSE LE 15: new kernel packages.
New packages are available:
  SUSE LE 15 RTM: kernel-default-livepatch 4.12.14-150.63.1, kernel-livepatch 4_12_14-150_63-default-1-1.5.1

SUSE LE 15 SP1: new kernel-azure packages (24/11/2020).
New packages are available:
  SUSE LE 15 SP1: kernel-azure 4.12.14-8.52.1

SUSE LE 15 SP1: new kernel-default-livepatch packages.
New packages are available:
  SUSE LE 15 SP1: kernel-default-livepatch 4.12.14-197.72.1

SUSE LE 15 SP1: new kernel-rt packages.
New packages are available:
  SUSE LE 15 SP1: kernel-rt 4.12.14-14.41.2

SUSE LE 15 SP2: new kernel-azure packages.
New packages are available:
  SUSE LE 15 SP2: kernel-azure 5.3.18-18.29.1

SUSE LE 15 SP2: new kernel packages (11/12/2020).
New packages are available:
  SUSE LE 15 SP2: kernel 5.3.18-24.43.2

SUSE LE 15 SP2: new kernel-rt packages (26/11/2020).
New packages are available:
  SUSE LE 15 SP2: kernel-rt 5.3.18-16.1

Ubuntu 18.04: new linux-image-4.15.0 packages.
New packages are available:
  Ubuntu 18.04 LTS: linux-image-generic 4.15.0.135.122

Ubuntu 20.04: new linux-image-5.6.0 packages.
New packages are available:
  Ubuntu 20.04 LTS: linux-image-oem-20.04 5.6.0.1048.44

Ubuntu 20: new linux-image-5.8.0 packages.
New packages are available:
  Ubuntu 20.04 LTS: linux-image-generic-hwe-20.04 5.8.0.44.50~20.04.30
  Ubuntu 20.10: linux-image-generic 5.8.0.44.49

Ubuntu: new linux-image-5.4.0 packages.
New packages are available:
  Ubuntu 18.04 LTS: linux-image-generic-hwe-18.04 5.4.0.59.65~18.04.54
  Ubuntu 20.04 LTS: linux-image-generic 5.4.0.59.62
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