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A flaw was found in grub2 in versions prior to 2.06. During USB device initialization descriptors are read with very little bounds checking and assumes the USB device is providing sane values. If properly exploited an attacker could trigger memory corruption leading to arbitrary code execution allowing a bypass of the Secure Boot mechanism. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
| Reporter | Title | Published | Views | Family All 214 |
|---|---|---|---|---|
 | Amazon Linux 2 : grub2 (ALAS-2021-1684) | 16 Jul 202100:00 | – | nessus |
| Alibaba Cloud Linux 3 : 0026: grub2 (ALINUX3-SA-2021:0026) | 14 May 202500:00 | – | nessus |
| Alibaba Cloud Linux 3 : 0048: fwupd (ALINUX3-SA-2021:0048) | 14 May 202500:00 | – | nessus |
| AlmaLinux 8 : grub2 (ALSA-2021:0696) | 9 Feb 202200:00 | – | nessus |
| AlmaLinux 8 : shim (ALSA-2021:1734) | 9 Feb 202200:00 | – | nessus |
| AlmaLinux 8 : fwupd (ALSA-2021:2566) | 9 Feb 202200:00 | – | nessus |
| CentOS 8 : grub2 (CESA-2021:0696) | 3 Mar 202100:00 | – | nessus |
| CentOS 8 : fwupd (CESA-2021:2566) | 3 Jul 202100:00 | – | nessus |
| CentOS 9 : shim-unsigned-x64-15.6-1.el9 | 29 Feb 202400:00 | – | nessus |
| CentOS 7 : grub2 (RHSA-2021:0699) | 9 Oct 202400:00 | – | nessus |
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16 Dec 2021 08:00Current
8.2High risk
Vulners AI Score8.2
CVSS 27.2
CVSS 3.17.6
EPSS0.00794