Improper Privilege Management in Linux kernel - CVE-2020-10757

Vulnerability identifier: #VU29957

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-10757

CWE-ID: CWE-269

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists in the Linux Kernel in versions after 4.5-rc1 in the way mremap handled DAX Huge Pages. This flaw allows a local attacker with access to a DAX enabled storage to escalate their privileges on the system.

Linux kernel
Red Hat Enterprise Linux for Scientific Computing
CentOS
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Virtualization Host - Extended Update Support 4.2 for RHEL
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Ubuntu
Fedora
kernel (Red Hat package)
kernel-rt (Red Hat package)
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
linux-image-generic (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-oem-osp1 (Ubuntu package)
linux-image-oem (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
linux-image-generic-lpae (Ubuntu package)
linux-image-5.4.0-45-lowlatency (Ubuntu package)
linux-image-5.4.0-45-generic (Ubuntu package)
linux-image-5.4.0-45-generic-lpae (Ubuntu package)
linux-image-virtual-hwe-18.04 (Ubuntu package)
linux-image-snapdragon-hwe-18.04 (Ubuntu package)
linux-image-lowlatency-hwe-18.04 (Ubuntu package)
linux-image-gkeop-5.4 (Ubuntu package)
linux-image-generic-lpae-hwe-18.04 (Ubuntu package)
linux-image-generic-hwe-18.04 (Ubuntu package)
linux-image-5.4.0-1016-raspi (Ubuntu package)
linux-image-raspi-hwe-18.04 (Ubuntu package)
linux-image-raspi2 (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-aws-edge (Ubuntu package)
linux-image-gke-5.4 (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-gke (Ubuntu package)
linux-image-5.4.0-1022-aws (Ubuntu package)
linux-image-5.4.0-1022-gcp (Ubuntu package)
linux-image-5.4.0-1022-oracle (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-5.4.0-1023-azure (Ubuntu package)
kernel
Data Computing Appliance (DCA)

Install updates from vendor's website.

kernel (Red Hat package) - addressed in versions 3.10.0-957.58.2.el7, 3.10.0-1062.33.1.el7, 3.10.0-1127.18.2.el7, 4.18.0-80.27.1.el8_0, 4.18.0-147.24.2.el8_1, 4.18.0-193.13.2.el8_2
kernel-rt (Red Hat package) - addressed in versions 3.10.0-1127.18.2.rt56.1116.el7, 4.18.0-193.13.2.rt13.65.el8_2
Data Computing Appliance (DCA) - update to 4.2.0.0
linux-image-generic (Ubuntu package) - update to 5.4.0.45.49
linux-image-virtual (Ubuntu package) - update to 5.4.0.45.49
linux-image-oem-osp1 (Ubuntu package) - update to 5.4.0.45.49
linux-image-oem (Ubuntu package) - update to 5.4.0.45.49
linux-image-lowlatency (Ubuntu package) - update to 5.4.0.45.49
linux-image-generic-lpae (Ubuntu package) - update to 5.4.0.45.49
linux-image-5.4.0-45-lowlatency (Ubuntu package) - update to 5.4.0-45.49~18.04.2
linux-image-5.4.0-45-generic (Ubuntu package) - update to 5.4.0-45.49~18.04.2
linux-image-5.4.0-45-generic-lpae (Ubuntu package) - update to 5.4.0-45.49~18.04.2
linux-image-virtual-hwe-18.04 (Ubuntu package) - update to 5.4.0.45.49~18.04.38
linux-image-snapdragon-hwe-18.04 (Ubuntu package) - update to 5.4.0.45.49~18.04.38
linux-image-lowlatency-hwe-18.04 (Ubuntu package) - update to 5.4.0.45.49~18.04.38
linux-image-gkeop-5.4 (Ubuntu package) - update to 5.4.0.45.49~18.04.38
linux-image-generic-lpae-hwe-18.04 (Ubuntu package) - update to 5.4.0.45.49~18.04.38
linux-image-generic-hwe-18.04 (Ubuntu package) - update to 5.4.0.45.49~18.04.38
linux-image-5.4.0-1016-raspi (Ubuntu package) - update to 5.4.0-1016.17~18.04.1
linux-image-raspi-hwe-18.04 (Ubuntu package) - update to 5.4.0.1016.20
linux-image-raspi2 (Ubuntu package) - update to 5.4.0.1016.51
linux-image-raspi (Ubuntu package) - update to 5.4.0.1016.51
linux-image-kvm (Ubuntu package) - update to 5.4.0.1021.20
linux-image-oracle (Ubuntu package) - addressed in versions 5.4.0.1022.7, 5.4.0.1022.20
linux-image-aws-edge (Ubuntu package) - update to 5.4.0.1022.8
linux-image-gke-5.4 (Ubuntu package) - update to 5.4.0.1022.9
linux-image-gcp (Ubuntu package) - addressed in versions 5.4.0.1022.9, 5.4.0.1022.20
linux-image-gke (Ubuntu package) - update to 5.4.0.1022.20
linux-image-5.4.0-1022-aws (Ubuntu package) - update to 5.4.0-1022.22~18.04.1
linux-image-5.4.0-1022-gcp (Ubuntu package) - update to 5.4.0-1022.22~18.04.1
linux-image-5.4.0-1022-oracle (Ubuntu package) - update to 5.4.0-1022.22~18.04.1
linux-image-aws (Ubuntu package) - update to 5.4.0.1022.23
linux-image-azure (Ubuntu package) - addressed in versions 5.4.0.1023.7, 5.4.0.1023.22
linux-image-5.4.0-1023-azure (Ubuntu package) - update to 5.4.0-1023.23~18.04.1
kernel - addressed in versions 5.6.16-200.fc31, 5.6.16-300.fc32

• http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html
• https://bugzilla.redhat.com/show_bug.cgi?id=1842525
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5bfea2d9b17f1034a68147a8b03b9789af5700f9
• https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IEM47BXZJLODRH5YNNZSAQ2NVM63MYMC/
• https://security.netapp.com/advisory/ntap-20200702-0004/
• https://www.debian.org/security/2020/dsa-4698
• https://www.debian.org/security/2020/dsa-4699
• https://www.openwall.com/lists/oss-security/2020/06/04/4

• Privilege escalation in Linux kernel
• Red Hat Enterprise Linux 7 update for kernel
• Red Hat Enterprise Linux 7 update for kernel-rt
• Red Hat Enterprise Linux 7 update for kernel
• CentOS 7 update for kernel
• Multiple vulnerabilities in Dell EMC Data Computing Appliance (DCA)
• Red Hat Enterprise Linux 8 update for kernel
• Red Hat Enterprise Linux 8 update for kernel-rt
• Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions update for kernel
• Red Hat Enterprise Linux 8.1 Extended Update Support update for kernel
• Red Hat Enterprise Linux 7.7 Extended Update Support update for kernel
• Ubuntu update for linux
• Fedora 31 update for kernel
• Fedora 32 update for kernel