Vulnerabilities > CVE-2020-12659 - Out-of-bounds Write vulnerability in multiple products
Attack vector
LOCAL Attack complexity
LOW Privileges required
HIGH Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
An issue was discovered in the Linux kernel before 5.6.7. xdp_umem_reg in net/xdp/xdp_umem.c has an out-of-bounds write (by a user with the CAP_NET_ADMIN capability) because of a lack of headroom validation.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Nessus
NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-4388-1.NASL description It was discovered that the F2FS file system implementation in the Linux kernel did not properly perform bounds checking on xattrs in some situations. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2020-0067) It was discovered that memory contents previously stored in microarchitectural special registers after RDRAND, RDSEED, and SGX EGETKEY read operations on Intel client and Xeon E3 processors may be briefly exposed to processes on the same or different processor cores. A local attacker could use this to expose sensitive information. (CVE-2020-0543) Piotr Krysiuk discovered that race conditions existed in the file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-12114) It was discovered that the USB susbsystem last seen 2020-06-13 modified 2020-06-10 plugin id 137298 published 2020-06-10 reporter Ubuntu Security Notice (C) 2020 Canonical, Inc. / NASL script (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137298 title Ubuntu 18.04 LTS : linux-gke-5.0, linux-oem-osp1 vulnerabilities (USN-4388-1) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2020-1592.NASL description According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A flaw was found in the Linux kernel last seen 2020-06-11 modified 2020-05-26 plugin id 136870 published 2020-05-26 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/136870 title EulerOS 2.0 SP8 : kernel (EulerOS-SA-2020-1592) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2020-5714.NASL description Description of changes: [5.4.17-2011.3.2.1.el8uek] - x86/speculation: Add Ivy Bridge to affected list (Josh Poimboeuf) [Orabug: 31352779] {CVE-2020-0543} - x86/speculation: Add SRBDS vulnerability and mitigation documentation (Mark Gross) [Orabug: 31352779] {CVE-2020-0543} - x86/speculation: Add Special Register Buffer Data Sampling (SRBDS) mitigation (Mark Gross) [Orabug: 31352779] {CVE-2020-0543} - x86/cpu: Add last seen 2020-06-13 modified 2020-06-10 plugin id 137290 published 2020-06-10 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137290 title Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2020-5714) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-4389-1.NASL description It was discovered that the F2FS file system implementation in the Linux kernel did not properly perform bounds checking on xattrs in some situations. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2020-0067) It was discovered that memory contents previously stored in microarchitectural special registers after RDRAND, RDSEED, and SGX EGETKEY read operations on Intel client and Xeon E3 processors may be briefly exposed to processes on the same or different processor cores. A local attacker could use this to expose sensitive information. (CVE-2020-0543) Piotr Krysiuk discovered that race conditions existed in the file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-12114) It was discovered that the USB susbsystem last seen 2020-06-13 modified 2020-06-10 plugin id 137299 published 2020-06-10 reporter Ubuntu Security Notice (C) 2020 Canonical, Inc. / NASL script (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137299 title Ubuntu 20.04 : linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-oracle (USN-4389-1) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-4387-1.NASL description It was discovered that the F2FS file system implementation in the Linux kernel did not properly perform bounds checking on xattrs in some situations. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2020-0067) It was discovered that memory contents previously stored in microarchitectural special registers after RDRAND, RDSEED, and SGX EGETKEY read operations on Intel client and Xeon E3 processors may be briefly exposed to processes on the same or different processor cores. A local attacker could use this to expose sensitive information. (CVE-2020-0543) Piotr Krysiuk discovered that race conditions existed in the file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-12114) It was discovered that the USB susbsystem last seen 2020-06-13 modified 2020-06-10 plugin id 137297 published 2020-06-10 reporter Ubuntu Security Notice (C) 2020 Canonical, Inc. / NASL script (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137297 title Ubuntu 18.04 LTS / 19.10 : linux, linux-aws, linux-aws-5.3, linux-azure, linux-azure-5.3, linux-gcp, (USN-4387-1)
References
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html
- https://bugzilla.kernel.org/show_bug.cgi?id=207225
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.7
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=99e3a236dd43d06c65af0a2ef9cb44306aef6e02
- https://github.com/torvalds/linux/commit/99e3a236dd43d06c65af0a2ef9cb44306aef6e02
- https://security.netapp.com/advisory/ntap-20200608-0001/
- https://usn.ubuntu.com/4387-1/
- https://usn.ubuntu.com/4388-1/
- https://usn.ubuntu.com/4389-1/
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html
- https://usn.ubuntu.com/4389-1/
- https://usn.ubuntu.com/4388-1/
- https://usn.ubuntu.com/4387-1/
- https://security.netapp.com/advisory/ntap-20200608-0001/
- https://github.com/torvalds/linux/commit/99e3a236dd43d06c65af0a2ef9cb44306aef6e02
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=99e3a236dd43d06c65af0a2ef9cb44306aef6e02
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.7
- https://bugzilla.kernel.org/show_bug.cgi?id=207225