Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bootconfig: Use memblockfreelate to free xbc memory to the buddy allocator. In the code for freeing xbc memory in xbcexit, memblock might have transferred memory to the buddy allocator. Therefore, it doesn’t make sense to free...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: x86/mm, kexec, ima: Use memblockfreelate instead of imafreekexecbuffer. The code that calls imafreekexecbuffer still runs long after the memblock allocator has already been removed. This could lead to a use-after-free in...

Linux Distros Unpatched Vulnerability : CVE-2026-93253

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - sched/isolation: Defer freeing of cpumask memblock memory to initcall When testing a linux-next kernel with commit 59bd1d914bb5 memblock: warn when freeing...

SUSE CVE-2026-93253

In the Linux kernel, the following vulnerability has been resolved: sched/isolation: Defer freeing of cpumask memblock memory to initcall When testing a linux-next kernel with commit 59bd1d914bb5 "memblock: warn when freeing reserved memory before memory map is initialized", the following warning...

DEBIAN-CVE-2026-93253

In the Linux kernel, the following vulnerability has been resolved: sched/isolation: Defer freeing of cpumask memblock memory to initcall When testing a linux-next kernel with commit 59bd1d914bb5 "memblock: warn when freeing reserved memory before memory map is initialized", the following warning...

CVE-2026-93253

In the Linux kernel, the following vulnerability has been resolved: sched/isolation: Defer freeing of cpumask memblock memory to initcall When testing a linux-next kernel with commit 59bd1d914bb5 "memblock: warn when freeing reserved memory before memory map is initialized", the following warning...

UBUNTU-CVE-2026-93253

In the Linux kernel, the following vulnerability has been resolved: sched/isolation: Defer freeing of cpumask memblock memory to initcall When testing a linux-next kernel with commit 59bd1d914bb5 "memblock: warn when freeing reserved memory before memory map is initialized", the following warning...

CVE-2026-93253 sched/isolation: Defer freeing of cpumask memblock memory to initcall

In the Linux kernel, the following vulnerability has been resolved: sched/isolation: Defer freeing of cpumask memblock memory to initcall When testing a linux-next kernel with commit 59bd1d914bb5 "memblock: warn when freeing reserved memory before memory map is initialized", the following warning...

EUVD-2026-86125

In the Linux kernel, the following vulnerability has been resolved: sched/isolation: Defer freeing of cpumask memblock memory to initcall When testing a linux-next kernel with commit 59bd1d914bb5 "memblock: warn when freeing reserved memory before memory map is initialized", the following warning...

CVE-2026-93253 sched/isolation: Defer freeing of cpumask memblock memory to initcall

In the Linux kernel, the following vulnerability has been resolved: sched/isolation: Defer freeing of cpumask memblock memory to initcall When testing a linux-next kernel with commit 59bd1d914bb5 "memblock: warn when freeing reserved memory before memory map is initialized", the following warning...

CVE-2026-93253

The Linux kernel contained a flaw where cpumask memblock memory was being freed too early during the boot process, before the memory map was fully initialized via deferred_init_memmap(). This issue was triggered when using the nohz_full kernel boot parameter, resulting in a kernel warning. The fi...

CVE-2026-93253: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: sched/isolation: Defer freeing of cpumask memblock memory to initcall When testing a linux-next kernel with commit 59bd1d914bb5 "memblock: warn when freeing reserved memory before memory map is initialized", the following warning...

CVE-2026-93253

In the Linux kernel, the following vulnerability has been resolved: sched/isolation: Defer freeing of cpumask memblock memory to initcall When testing a linux-next kernel with commit 59bd1d914bb5 "memblock: warn when freeing reserved memory before memory map is initialized", the following warning...

PT-2026-97940

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the scheduler isolation where memblock allocated memory is freed too early in the boot process, specifically when the memory map is not yet fully initialized in deferr...

CVE-2026-93172: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: mm/mminit: handle allocpercpu failure in freeareainitcorehotplug We miss a failed allocation check for pgdat-percpunodestats, which results in a NULL deref when we offset into the per-cpu area. Propagate -ENOMEM up the stack and...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: rcv: move memblockallowresize after linear mapping is ready The initial memblock metadata is accessed from the kernel image mapping. The regions arrays need to be “reallocated” from memblock and accessed through linear mapping to...

CVE-2026-89568: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: kho: fix size calculation in khopreservedmemoryreserve khopreservedmemoryreserve calculates the size of a preservation by doing 1 order + PAGESHIFT. Since the '1' is a 32-bit integer, it can only be shifted by 31. That is, it wil...

CVE-2026-45851 efi: Fix reservation of unaccepted memory table

In the Linux kernel, the following vulnerability has been resolved: efi: Fix reservation of unaccepted memory table The reserveunaccepted function incorrectly calculates the size of the memblock reservation for the unaccepted memory table. It aligns the size of the table, but fails to account for...

CVE-2026-45851: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: efi: Fix reservation of unaccepted memory table The reserveunaccepted function incorrectly calculates the size of the memblock reservation for the unaccepted memory table. It aligns the size of the table, but fails to account for...

Linux kernel memblock_set_node Heap Buffer Overflow DoS

The vulnerability of the memblocksetnode function in the mm/memblock.c module of the Linux kernel’s memory management subsystem is related to incorrect input data validation. Exploiting this vulnerability could allow an attacker to cause a system failure...