Astra Linux – Vulnerability in grub2

A flaw was discovered in command/gpg. In some scenarios, hooks created by loaded modules are not removed when the related module is unloaded. This flaw allows an attacker to force grub2 to call the hooks once the module that registered them was unloaded, resulting in a use-after-free vulnerabilit...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2. When reading data from a jfs filesystem, grub’s jfs filesystem module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size. However, it improperly checks for integer overflows. A maliciously crafted filesystem may cause...

Astra Linux – Vulnerability in grub2

When reading data from the disk, the GRUB’s UDF filesystem module uses the user-controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes that the read size from the disk is always smaller than the allocated buffer siz...

Astra Linux – Vulnerability in grub2

When reading data from an HFS filesystem, Grub’s HFS filesystem module uses user-controlled parameters from the filesystem metadata to calculate the internal buffer size. However, it fails to properly check for integer overflows. A maliciously crafted filesystem may cause some of those buffer siz...

Astra Linux – Vulnerability in grub2

The “read” command is used to read the keyboard input from the user. While reading, the input length is stored as a 32-bit integer value. This value is then used to reallocate the line buffer to accommodate the next character. During this process, if the line is long enough, it’s possible for thi...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2. During the network boot process, when attempting to search for the configuration file, grub copies data from a user-controlled environment variable into an internal buffer using the grubstrcpy function. During this step, it fails to consider the length of the...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2. When performing a symlink lookup, the grub’s UFS module checks the data size of the inode to allocate an internal buffer to read the file content. However, it fails to check whether the data size of the symlink has exceeded its allocated limit. As a result, the...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2. When reading data from a squash4 filesystem, grub’s squash4 fs module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size. However, it improperly checks for integer overflows. A maliciously crafted filesystem may cause...

Security Bulletin: This Power System update is being released to address CVE-2025-52497

Summary When Linux Secure Boot is enabled, a malformed public key certificate in the grubdb or grubdbx can cause a DoS blocking Linux partition boot or make a limited amount of partition memory available. Vulnerability Details CVEID:CVE-2025-52497 DESCRIPTION: Mbed TLS before 3.6.4 has a PEM...

Security Bulletin: This Power System update is being released to address CVE-2025-49087

Summary Mbed-TLS is used by partition firmware for Linux secure boot. This update is being released to mitigate any potential impacts to Linux partitions with secure boot enabled. Vulnerability Details CVEID:CVE-2025-49087 DESCRIPTION: In Mbed TLS 3.6.1 through 3.6.3 before 3.6.4, a timing...

January 24, 2026—KB5078131 (OS Build 17763.8281) Out-of-band

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January 24, 2026—KB5078129 (OS Builds 19045.6812 and 19044.6812) Out-of-band

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Linux Distros Unpatched Vulnerability : CVE-2026-21265

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Windows Secure Boot stores Microsoft certificates in the UEFI KEK and DB. These original certificates are approaching expiration, and devices containing affecte...

MiracleLinux 8 : grub2-2.02-142.el8.1.ML.1 (AXSA:2023-4726:01)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2023-4726:01 advisory. grub2: Buffer overflow in grubfontconstructglyph can lead to out-of-bound write and possible secure boot bypass CVE-2022-2601 grub2: Heap based...

MiracleLinux 9 : fwupd-1.8.10-2.el9.ML.1 (AXSA:2023-5696:02)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2023-5696:02 advisory. fwupd: world readable password in /etc/fwupd/redfish.conf CVE-2022-3287 shim: 3rd party shim allow secure boot bypass CVE-2022-34301 shim: 3rd party...

MiracleLinux 8 : shim-unsigned-x64-15.4-4.el8.ML.2 (AXSA:2021-2174:02)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2021-2174:02 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...

MiracleLinux 7 : grub2-2.02-0.87.14.0.1.el7.AXS7 (AXSA:2024-7721:02)

The remote MiracleLinux 7 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2024-7721:02 advisory. grub2: Buffer overflow in grubfontconstructglyph can lead to out-of-bound write and possible secure boot bypass CVE-2022-2601 Tenable has extracted the...

MiracleLinux 8 : shim-15.8-4.el8_9.ML.1 (AXSA:2024-7744:01)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2024-7744:01 advisory. shim: RCE in http boot support may lead to Secure Boot bypass CVE-2023-40547 shim: Interger overflow leads to heap buffer overflow in...

MiracleLinux 8 : fwupd-1.5.9-1.el8.ML.1 (AXSA:2022-2904:01)

The remote MiracleLinux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2022-2904:01 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...

MiracleLinux 9 : grub2-2.06-46.el9.3.ML.1 (AXSA:2023-5114:03)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2023-5114:03 advisory. grub2: Buffer overflow in grubfontconstructglyph can lead to out-of-bound write and possible secure boot bypass CVE-2022-2601 grub2: Heap based...