CVE-2021-42327

CVE-2021-42327 SLUB overflow exploit full writeup...

libslub

libslub libslub is a python library to examine the SLUB managements structures and object allocations the Linux kernel heap implementation. It is currently designed for use with GDB but could easily be adapted to work with other debuggers. It helps understanding SLUB internals and developing Linu...

salt

Bienvenido a salt , una herramienta para hacer ingeniería inversa y aprender la gestión de memoria heap del kernel. Puede ser útil para desarrollar un exploit, depurar tu propio código del kernel y, más importante, jugar con las asignaciones del heap del kernel y aprender su funcionamiento intern...

CVE-2019-2215

CVE-2019-2215 Andriod binder bug record.Just only test on emulator : ubuntu 22.04 | 4G | 4 cpus andriod studio Pixel2 | Andriod 10.0Q--Google Play Intel x86 Atom 64 System Image | API-29 ndk 21.0.6113669 origin/android-goldfish-4.14-dev | kernel version is 4.14.175 some important config options...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: mm: slub: Avoid waking up kswapd in settrackprepare settrackprepare may cause lock recursion. The issue arises because it is called from hrtimerstartrangens, which holds percpuhrtimerbasesn.lock. However, when...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: mm/slub: Actually fixed the issue with the freelist pointer and redzone allocation. It turns out that SLUB redzone allocation “slubdebug=Z” checks based on s-objectsize instead of s-inuse which is normally adjusted to make roo...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: mm/slub: Added missing TID updates when the slab is deactivated. The fastpath in slaballocnode assumes that c-slab remains stable as long as the TID remains the same. However, there are two places in slaballoc where the TID is...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: mm: slub: Fix the invocation of flushcpuslab and freeslab in the task context. The commit 5a836bf6b09f “mm: slub: move the invocation of flushcpuslab and freeslab out of the IRQ context” fixes this issue by moving all invocations...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

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...

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...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: The issue of slub overflow in ksmbddecodentlmsspauthblob has been fixed. If authblob-SessionKey.Length is larger than the size of the session key CIFSKEYSIZE, slub overflow can occur in the key exchange process. The functi...

SUSE CVE-2026-72339

In the Linux kernel, the following vulnerability has been resolved: qede: fix off-by-one in BD ring consumption on buildskb failure qederxbuildskb and qedetparxbuildskb do not check for a NULL return from qedebuildskb. When it returns NULL under memory pressure, the functions still consume a BD...

kernel security, bug fix, and enhancement update

4.18.0-553.155.1 - Update Oracle Linux certificates Kevin Lyons - Disable signing for aarch64 Ilya Okomin - Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list olkmodsigningkey.pem Orabug: 29539237 - Update x509.genkey Orabug: 24817676 - Conflict with shim-ia32 and...

RLSA-2026:55764 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 -...

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...

Linux Distros Unpatched Vulnerability : CVE-2026-72339

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - qede: fix off-by-one in BD ring consumption on buildskb failure qederxbuildskb and qedetparxbuildskb do not check for a NULL return from qedebuildskb. When it...

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 -...

ALSA-2026:55764 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 -...