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CVE-2020-8832

Status Candidate

Overview

The fix for the Linux kernel in Ubuntu 18.04 LTS for CVE-2019-14615 ("The Linux kernel did not properly clear data structures on context switches for certain Intel graphics processors.") was discovered to be incomplete, meaning that in versions of the kernel before 4.15.0-91.92, an attacker could use this vulnerability to expose sensitive information.

Related Files

Ubuntu Security Notice USN-4302-1
Posted Mar 17, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4302-1 - Paulo Bonzini discovered that the KVM hypervisor implementation in the Linux kernel could improperly let a nested guest access the resources of a parent guest in certain situations. An attacker could use this to expose sensitive information. Gregory Herrero discovered that the fix for CVE-2019-14615 to address the Linux kernel not properly clearing data structures on context switches for certain Intel graphics processors was incomplete. 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-2019-15217, CVE-2019-19046, CVE-2019-19051, CVE-2019-19056, CVE-2019-19058, CVE-2019-19066, CVE-2019-19068, CVE-2020-2732, CVE-2020-8832
SHA-256 | 3f65e5ffbc3857537bf6869a1491356bedce6b14cb08f5e1b25c6d6d2862ecd3
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