Rocky Linux 8 [CIQ] Security Update: shim-unsigned-aarch64 Multiple Vulnerabilities (crlsa-2021_1734)

The Rocky Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the CIQ crlsa-20211734 advisory. grub2: acpi command allows privileged user to load crafted ACPI tables when Secure Boot is enabled CVE-2020-14372 grub2: Use-after-free in rmmod command...

Rocky Linux 10.1 [CIQ] Security Update: grub2-common / grub2-debuginfo / grub2-debugsource / grub2-efi-aa64 / etc (crlsa-2026_4649)

The Rocky Linux 10.1 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-20264649 advisory. grub2: Missing unregister call for gettext command may lead to use-after-free CVE-2025-61662 Tenable has extracted the preceding description block directly from...

CentOS Linux 7.9 [CIQ] Security Update: grub2 / grub2-common / grub2-debuginfo / grub2-efi-ia32 / etc Multiple Vulnerabilities (ciqsa-2026_0668)

The CentOS Linux 7.9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ ciqsa-20260668 advisory. This advisory aggregates security fixes for the grub2 SRPM in CIQ CentOS Bridge 7.9. It addresses 2 CVEs: CVE-2021-3695, CVE-2021-3697. Tenable has...

AlmaLinux 9.2 [TuxCare] Security Update: grub2-common / grub2-efi-aa64-modules / grub2-efi-x64 / etc (ALMALINUX9.2:CLSA-2024:1707226462)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2024:1707226462 advisory. - An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NT...

CentOS Linux 7 [TuxCare] Security Update: grub2 / grub2-common / grub2-efi-ia32 / grub2-efi-ia32-cdboot / etc Multiple Vulnerabilities (CENTOS7:CLSA-2026:1771332544)

The CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2026:1771332544 advisory. - When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its intern...

CentOS Linux 8.4 [TuxCare] Security Update: grub2-common / grub2-efi-ia32 / grub2-efi-ia32-cdboot / etc (CENTOS8.4:CLSA-2026:1771954436)

The CentOS Linux 8.4 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS8.4:CLSA-2026:1771954436 advisory. - A Use-After-Free vulnerability has been discovered in GRUB's gettext module. This flaw stems from a programming error where the gettext...

CentOS Linux 8 [TuxCare] Security Update: grub2-common / grub2-efi-ia32 / grub2-efi-ia32-cdboot / etc (CENTOS-STREAM8:CLSA-2026:1772112789)

The CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS- STREAM8:CLSA-2026:1772112789 advisory. - A Use-After-Free vulnerability has been discovered in GRUB's gettext module. This flaw stems from a programming error where the gettext...

AlmaLinux 9.2 [TuxCare] Security Update: grub2-common / grub2-efi-aa64-modules / grub2-efi-x64 / etc (ALMALINUX9.2:CLSA-2026:1779370563)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1779370563 advisory. - A flaw was found in grub2. When performing a symlink lookup, the grub's UFS module checks the inode's data size to allocate the internal...

slot2

slot2 slot2: a two-stage UEFI GRUB2 bootkit that persists a pre-OS networked implant on Amazon Linux 2023 on AWS EC2 UEFI x8664. by cenobyte [email protected] 2026 https://github.com/cenobyte-vincit/slot2 Summary slot2 is a bootkit for Amazon Linux 2023 on EC2. The AWS EC2 UEFI firmware load...

EulerOS Virtualization 2.11.1 : grub2 (EulerOS-SA-2026-3420)

According to the versions of the grub2 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : A stack overflow flaw was found when reading a BFS file system. A crafted BFS filesystem may lead to an uncontrolled loop, causing...

EulerOS Virtualization 2.11.0 : grub2 (EulerOS-SA-2026-3507)

According to the versions of the grub2 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : A stack overflow flaw was found when reading a BFS file system. A crafted BFS filesystem may lead to an uncontrolled loop, causing...

Astra Linux – Vulnerability in grub2

The GRUB2’s shimlock verifier allows non-kernel files to be loaded on shim-powered secure boot systems. Allowing such files to be loaded may lead to unverified code and modules being loaded in GRUB2, thereby breaking the secure boot trust-chain...

Astra Linux – Vulnerability in grub2

Integer underflow in grubnetrecvip4packets; A malicious IP packet can cause an integer underflow in the grubnetrecvip4packets function, affecting the rsm-totallen value. Under certain circumstances, the totallen value may wrap around to a small integer number, which will be used in memory...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2 in versions prior to 2.06. The cutmem command does not honor secure boot locking, allowing a privileged attacker to remove address ranges from memory. This creates an opportunity to circumvent SecureBoot protections after proper analysis of grub’s memory layout. The...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2. When attempting to mount an HFS+ partition, the hfsplus filesystem driver does not correctly set the ERRNO value. This issue may lead to a NULL pointer access...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2, where the grubextcmddispatcher function calls grubarglistalloc to allocate memory for the grub’s argument list. However, it does not check in case the memory allocation fails. Once the allocation fails, a NULL pointer will be processed by the parseoption function,...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2 in versions prior to 2.06. The Setparamprefix function in the menu rendering code performs a length calculation based on the assumption that expressing a single quoted character would require 3 characters. However, in reality, it requires 4 characters. This allows a...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a module that serves as a dependency without checking whether any other dependent modules are still loaded, leading to a “use-after-free” scenario. This could allow arbitrary code to be...

Astra Linux – Vulnerability in grub2

A crafted 16-bit grayscale PNG image may lead to an out-of-bounds write in the heap area. An attacker may exploit this to cause heap data corruption or, ultimately, arbitrary code execution and circumvent secure boot protections. This issue is highly complex to exploit; an attacker needs to perfo...

Astra Linux – Vulnerability in grub2

A buffer overflow was detected in grubfontconstructglyph. A maliciously crafted pf2 font can cause an overflow when calculating the maxglyphsize value. This results in allocating a buffer that is smaller than necessary for the glyph, leading to another buffer overflow and an out-of-bounds write t...