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CVE-2020-0543

Status Candidate

Overview

Incomplete cleanup from specific special register read operations in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

Related Files

Red Hat Security Advisory 2020-2842-01
Posted Jul 7, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2842-01 - An update for microcode_ctl is now available for Red Hat Enterprise Linux 7.6 Extended Update Support. Sampling issues were addressed.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-0543, CVE-2020-0548, CVE-2020-0549
MD5 | b8cfe7f0ee227572843fa15e87286610
Red Hat Security Advisory 2020-2771-01
Posted Jun 30, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2771-01 - An update for microcode_ctl is now available for Red Hat Enterprise Linux 7.4 Advances Update Support. Sampling issues were addressed.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-0543, CVE-2020-0548, CVE-2020-0549
MD5 | 4fb3a030f5d1a959d6c5e674cf4ede91
Red Hat Security Advisory 2020-2758-01
Posted Jun 29, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2758-01 - An update for microcode_ctl is now available for Red at Enterprise Linux 7.7 Extended Update Support. Sampling issues were addressed.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-0543, CVE-2020-0548, CVE-2020-0549
MD5 | 3880abe4694b5f5f6d5d2e15144d6ae1
Red Hat Security Advisory 2020-2757-01
Posted Jun 29, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2757-01 - An update for microcode_ctl is now available for Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions. Sampling issues were addressed.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-0543, CVE-2020-0548, CVE-2020-0549
MD5 | c998f9311fa2a5c6541217fc385b6f8e
Red Hat Security Advisory 2020-2706-01
Posted Jun 23, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2706-01 - Updated microcode_ctl packages that fix several security bugs and add various enhancements are now available.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-0543, CVE-2020-0548, CVE-2020-0549
MD5 | 26dd8d68eef6f824062e175fa3770d2c
Red Hat Security Advisory 2020-2707-01
Posted Jun 23, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2707-01 - Updated microcode_ctl packages that fix several security bugs and add various enhancements are now available.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-0543, CVE-2020-0548, CVE-2020-0549
MD5 | f77bc592c19698bd22ea58b164a63f3b
Red Hat Security Advisory 2020-2680-01
Posted Jun 23, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2680-01 - Updated microcode_ctl packages that fix several security bugs and add various enhancements are now available.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-0543, CVE-2020-0548, CVE-2020-0549
MD5 | f653856382874c80157786004309ea4f
Red Hat Security Advisory 2020-2679-01
Posted Jun 23, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2679-01 - Updated microcode_ctl packages that fix several security bugs and add various enhancements are now available.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-0543, CVE-2020-0548, CVE-2020-0549
MD5 | 2ac14627e0b6714cf58e886fc63d60f8
Red Hat Security Advisory 2020-2677-01
Posted Jun 23, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2677-01 - An update for microcode_ctl is now available for Red Hat enterprise Linux 8.1 Extended Update Support.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-0543, CVE-2020-0548, CVE-2020-0549
MD5 | 08d996ce973ebc5373eb8efe6c33bd92
Ubuntu Security Notice USN-4385-2
Posted Jun 11, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4385-2 - USN-4385-1 provided updated Intel Processor Microcode. Unfortunately, that update prevented certain processors in the Intel Skylake family from booting successfully. Additionally, on Ubuntu 20.04 LTS, late loading of microcode was enabled, which could lead to system instability. This update reverts the microcode update for the Skylake processor family and disables the late loading option on Ubuntu 20.04 LTS. Please note that the 'dis_ucode_ldr' kernel command line option can be added in the boot menu to disable microcode loading for system recovery. Various other issues were also addressed.

tags | advisory, kernel
systems | linux, ubuntu
advisories | CVE-2020-0543, CVE-2020-0548, CVE-2020-0549
MD5 | e73d5f6c4c88bce23e85bfb3e434f4f6
Ubuntu Security Notice USN-4392-1
Posted Jun 10, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4392-1 - It was discovered that the Marvell WiFi-Ex Driver in the Linux kernel did not properly validate status lengths in messages received from an access point, leading to a buffer overflow. A physically proximate attacker controlling an access point could use this to construct messages that could possibly result in arbitrary code execution. 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. Various other issues were also addressed.

tags | advisory, overflow, arbitrary, kernel, local, code execution
systems | linux, ubuntu
advisories | CVE-2020-0543, CVE-2020-12114, CVE-2020-12654
MD5 | 2a8d26a4c0fc30acb37659ae44687215
Ubuntu Security Notice USN-4388-1
Posted Jun 10, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4388-1 - 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. 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. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-0067, CVE-2020-0543, CVE-2020-12114, CVE-2020-12464, CVE-2020-12659, CVE-2020-1749
MD5 | 3cd7fbe81c4015ba8baf954c820314b8
Ubuntu Security Notice USN-4391-1
Posted Jun 10, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4391-1 - It was discovered that the ext4 file system implementation in the Linux kernel did not properly handle setxattr operations in some situations. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. 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. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2019-19319, CVE-2020-0543, CVE-2020-10751, CVE-2020-12114, CVE-2020-12464, CVE-2020-12769, CVE-2020-12826, CVE-2020-1749
MD5 | b9a5c4d0b8f881b21288f5e8a866b693
Ubuntu Security Notice USN-4389-1
Posted Jun 10, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4389-1 - 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. 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. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-0067, CVE-2020-0543, CVE-2020-10751, CVE-2020-12114, CVE-2020-12464, CVE-2020-12659
MD5 | a93cc4b0befc248853b45d9e0467a27f
Ubuntu Security Notice USN-4390-1
Posted Jun 10, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4390-1 - 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. 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. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-0067, CVE-2020-0543, CVE-2020-10751, CVE-2020-12114, CVE-2020-12464, CVE-2020-1749
MD5 | f002116a7b317689b84b6b58abae7aff
Ubuntu Security Notice USN-4393-1
Posted Jun 10, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4393-1 - It was discovered that the Marvell WiFi-Ex Driver in the Linux kernel did not properly validate status lengths in messages received from an access point, leading to a buffer overflow. A physically proximate attacker controlling an access point could use this to construct messages that could possibly result in arbitrary code execution. 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. Various other issues were also addressed.

tags | advisory, overflow, arbitrary, kernel, local, code execution
systems | linux, ubuntu
advisories | CVE-2020-0543, CVE-2020-12654
MD5 | 1c2083f7dc6855a4a9ae2d20008669a7
Ubuntu Security Notice USN-4387-1
Posted Jun 10, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4387-1 - 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. 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. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-0067, CVE-2020-0543, CVE-2020-12114, CVE-2020-12464, CVE-2020-12659
MD5 | 71371ab954b312b6f8dee337cb7072e8
Red Hat Security Advisory 2020-2432-01
Posted Jun 10, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2432-01 - Updated microcode_ctl packages that fix several security bugs and add various enhancements are now available.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-0543, CVE-2020-0548, CVE-2020-0549
MD5 | 0677fab55d54d26362e29927d1d8a979
Ubuntu Security Notice USN-4385-1
Posted Jun 10, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4385-1 - 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. It was discovered that on some Intel processors, partial data values previously read from a vector register on a physical core may be propagated into unused portions of the store buffer. A local attacker could possible use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2020-0543, CVE-2020-0548, CVE-2020-0549
MD5 | ddedba3354363299d3f430d3dfcbc404
Red Hat Security Advisory 2020-2433-01
Posted Jun 9, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2433-01 - The microcode_ctl packages provide microcode updates for Intel and AMD processors.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-0543, CVE-2020-0548, CVE-2020-0549
MD5 | 16c56b243572e12ef2dcff759a9b90a3
Red Hat Security Advisory 2020-2431-01
Posted Jun 9, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2431-01 - Updated microcode_ctl packages that fix several security bugs and add various enhancements are now available.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-0543, CVE-2020-0548, CVE-2020-0549
MD5 | 15aaa02ebf2d509adc0df4f61d004a20
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