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CVE-2020-25632

Status Candidate

Overview

A flaw was found in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Related Files

Gentoo Linux Security Advisory 202104-05
Posted May 3, 2021
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202104-5 - Multiple vulnerabilities have been found in GRUB, the worst might allow for circumvention of UEFI Secure Boot. Versions less than 2.06_rc1 are affected.

tags | advisory, vulnerability
systems | linux, gentoo
advisories | CVE-2020-10713, CVE-2020-14308, CVE-2020-14309, CVE-2020-14310, CVE-2020-14311, CVE-2020-14372, CVE-2020-15705, CVE-2020-15706, CVE-2020-15707, CVE-2020-25632, CVE-2020-25647, CVE-2020-27749, CVE-2020-27779, CVE-2021-20225, CVE-2021-20233
MD5 | 8cc497c35fa19595a39d6cbcaef63e9d
Red Hat Security Advisory 2021-0701-01
Posted Mar 3, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0701-01 - The grub2 packages provide version 2 of the Grand Unified Boot Loader, a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. Issues addressed include buffer overflow, out of bounds write, and use-after-free vulnerabilities.

tags | advisory, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-14372, CVE-2020-25632, CVE-2020-25647, CVE-2020-27749, CVE-2020-27779, CVE-2021-20225, CVE-2021-20233
MD5 | 7414ff24c1c6b8bd45da5b75de65b7b5
Red Hat Security Advisory 2021-0700-01
Posted Mar 3, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0700-01 - The grub2 packages provide version 2 of the Grand Unified Boot Loader, a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. Issues addressed include buffer overflow, out of bounds write, and use-after-free vulnerabilities.

tags | advisory, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-14372, CVE-2020-25632, CVE-2020-25647, CVE-2020-27749, CVE-2020-27779, CVE-2021-20225, CVE-2021-20233
MD5 | e1092492203235201d9202c7773db9a9
Red Hat Security Advisory 2021-0699-01
Posted Mar 3, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0699-01 - The grub2 packages provide version 2 of the Grand Unified Boot Loader, a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. Issues addressed include buffer overflow, out of bounds write, and use-after-free vulnerabilities.

tags | advisory, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-14372, CVE-2020-25632, CVE-2020-25647, CVE-2020-27749, CVE-2020-27779, CVE-2021-20225, CVE-2021-20233
MD5 | 46adb797f1a2a375676777f91bd2707c
Red Hat Security Advisory 2021-0702-01
Posted Mar 3, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0702-01 - The grub2 packages provide version 2 of the Grand Unified Boot Loader, a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. Issues addressed include buffer overflow, out of bounds write, and use-after-free vulnerabilities.

tags | advisory, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-14372, CVE-2020-25632, CVE-2020-25647, CVE-2020-27749, CVE-2020-27779, CVE-2021-20225, CVE-2021-20233
MD5 | bb807c0ca2a5e8950e4b826150306278
Red Hat Security Advisory 2021-0704-01
Posted Mar 3, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0704-01 - The grub2 packages provide version 2 of the Grand Unified Boot Loader, a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. Issues addressed include buffer overflow, out of bounds write, and use-after-free vulnerabilities.

tags | advisory, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-14372, CVE-2020-25632, CVE-2020-25647, CVE-2020-27749, CVE-2020-27779, CVE-2021-20225, CVE-2021-20233
MD5 | 8d90132cb5c5758420ea2326d3d3af2b
Red Hat Security Advisory 2021-0703-01
Posted Mar 3, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0703-01 - The grub2 packages provide version 2 of the Grand Unified Boot Loader, a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. Issues addressed include buffer overflow, out of bounds write, and use-after-free vulnerabilities.

tags | advisory, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-14372, CVE-2020-25632, CVE-2020-25647, CVE-2020-27749, CVE-2020-27779, CVE-2021-20225, CVE-2021-20233
MD5 | afa2e983baabff4428efd55913f63f65
Red Hat Security Advisory 2021-0697-01
Posted Mar 3, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0697-01 - The grub2 packages provide version 2 of the Grand Unified Boot Loader, a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. Issues addressed include buffer overflow, out of bounds write, and use-after-free vulnerabilities.

tags | advisory, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-14372, CVE-2020-25632, CVE-2020-25647, CVE-2020-27749, CVE-2020-27779, CVE-2021-20225, CVE-2021-20233
MD5 | 4cb1ed985ca6f84ebdb6fab7882238ff
Red Hat Security Advisory 2021-0696-01
Posted Mar 3, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0696-01 - The grub2 packages provide version 2 of the Grand Unified Boot Loader, a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. Issues addressed include buffer overflow, out of bounds write, and use-after-free vulnerabilities.

tags | advisory, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-14372, CVE-2020-25632, CVE-2020-25647, CVE-2020-27749, CVE-2020-27779, CVE-2021-20225, CVE-2021-20233
MD5 | e9ba2558554aa1730adf9136916c6928
Red Hat Security Advisory 2021-0698-01
Posted Mar 3, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0698-01 - The grub2 packages provide version 2 of the Grand Unified Boot Loader, a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. Issues addressed include buffer overflow, out of bounds write, and use-after-free vulnerabilities.

tags | advisory, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-14372, CVE-2020-25632, CVE-2020-25647, CVE-2020-27749, CVE-2020-27779, CVE-2021-20225, CVE-2021-20233
MD5 | f19a88eeebd608835c6f056d9303e450
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