salt

Welcome to salt , a tool to reverse and learn kernel heap memory management. It can be useful to develop an exploit, to debug your own kernel code, and, more importantly, to play with the kernel heap allocations and learn its inner workings. This tool helps tracing allocations and the current sta...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: mm, slub: fixed a potential memory leak in kmemcacheopen. In the error path, the slub cache’s randomseq value might be leaked. This issue was addressed by using kmemcacherelease to release all relevant resources...

Harvest Season for SLUB: From Io_uring Vulnerability to Novel Sheaf-Based Exploitation Techniques

The Linux kernel's push for higher I/O performance and more efficient memory management has introduced new mechanisms that, while improving performance, also open new attack surfaces. This research examines two of them together: the iouring subsystem and the sheaf/barn caching mechanism added to...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: mm/slub: Fixed the issue by returning errno if kmalloc fails. In createuniqueid, kmalloc, GFPKERNEL may fail due to out-of-memory conditions. If this happens, errno should be returned correctly instead of triggering a panic via...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-053203)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-053203 advisory. In the Linux kernel, the following vulnerability has been resolved: mm, slub: fix potential memoryleak in kmemcacheopen In error path, the randomseq of slub cache...

RockyLinux 8 : kernel-rt (RLSA-2026:55765)

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:55765 advisory. kernel: mm/slub: avoid accessing metadata when pointer is invalid in objecterr CVE-2025-39902 kernel: drm/amdkfd: Fix out-of-bounds write in...

kernel: mm/slub: avoid accessing metadata when pointer is invalid in object_err()

A flaw was found in the Linux kernel’s SLUB memory allocator mm/slub. The function objecterr — used for debugging object metadata freelist pointer, redzone, etc. — can access invalid pointers when reporting corruption, leading to a crash. In some cases, due to freelist corruption e.g., detected b...

kernel: mm/slub: avoid accessing metadata when pointer is invalid in object_err()

A flaw was found in the Linux kernel’s SLUB memory allocator mm/slub. The function objecterr — used for debugging object metadata freelist pointer, redzone, etc. — can access invalid pointers when reporting corruption, leading to a crash. In some cases, due to freelist corruption e.g., detected b...

Important: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: mm/slub: avoid accessing metadata when pointer is invalid in objecterr CVE-2025-39902 kernel: drm/amdkfd: Fix out-of-bounds write in kfdeventpageset CVE-2026-43206 kernel: crypto: ccp -...

CVE-2026-64368

In the Linux kernel, the following vulnerability has been resolved: mm/slab: do not limit zeroing to origsize when only red zoning is enabled When init zeroing on allocation is requested, for kmalloc we generally have to zero the full object size even if a smaller size is requested, in order to...

Linux Distros Unpatched Vulnerability : CVE-2026-45990

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: slub: fix data loss and overflow in krealloc Commit 2cd8231796b5 mm/slub: allow to set node...

SUSE CVE-2026-45990

In the Linux kernel, the following vulnerability has been resolved: slub: fix data loss and overflow in krealloc Commit 2cd8231796b5 "mm/slub: allow to set node and align in kvrealloc" introduced the ability to force a reallocation if the original object does not satisfy new alignment or NUMA nod...

CVE-2026-45990

In the Linux kernel, the following vulnerability has been resolved: slub: fix data loss and overflow in krealloc Commit 2cd8231796b5 "mm/slub: allow to set node and align in kvrealloc" introduced the ability to force a reallocation if the original object does not satisfy new alignment or NUMA nod...

CVE-2026-45990

In the Linux kernel, the following vulnerability has been resolved: slub: fix data loss and overflow in krealloc Commit 2cd8231796b5 "mm/slub: allow to set node and align in kvrealloc" introduced the ability to force a reallocation if the original object does not satisfy new alignment or NUMA nod...

CVE-2026-45990 slub: fix data loss and overflow in krealloc()

In the Linux kernel, the following vulnerability has been resolved: slub: fix data loss and overflow in krealloc Commit 2cd8231796b5 "mm/slub: allow to set node and align in kvrealloc" introduced the ability to force a reallocation if the original object does not satisfy new alignment or NUMA nod...

CVE-2026-45990

In the Linux kernel, the following vulnerability has been resolved: slub: fix data loss and overflow in krealloc Commit 2cd8231796b5 "mm/slub: allow to set node and align in kvrealloc" introduced the ability to force a reallocation if the original object does not satisfy new alignment or NUMA nod...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-007048)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007048 advisory. In the Linux kernel, the following vulnerability has been resolved: mm/slub: avoid accessing metadata when pointer is invalid in objecterr objecterr reports details ...

Linux kernel Memory Management Heap Buffer Overflow DoS

The vulnerability of the setfreepointer function in the mm/slub.c module of the Linux kernel’s memory management subsystem is related to pointer manipulation. Exploiting this vulnerability could allow an attacker to cause a system failure...

Linux kernel Slab Heap Buffer Overflow DoS

The vulnerability of the checkslab function in the mm/slub.c module of the Linux kernel’s memory management subsystem is related to the lack of memory release after the effective lifespan has ended. Exploiting this vulnerability could allow an attacker to cause a service failure...

Astra Linux - уязвимость в linux-5.10

In the Linux kernel, the following vulnerability has been resolved: mm/slub: reset KASAN tag in deferfree before accessing freed memory When CONFIGSLUBTINY is enabled, kfreenolock calls kasanslabfree before deferfree. On ARM64 with MTE Memory Tagging Extension, kasanslabfree poisons the memory an...