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...

CVE-2021-42327

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

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...

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...

Rocky Linux 9 [CIQ] Security Update: kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc (crlsa-2025_21926)

The Rocky Linux 9 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-202521926 advisory. kernel: mm: slub: avoid wake up kswapd in settrackprepare CVE-2025-39843 Tenable has extracted the preceding description block directly from the CIQ security...

Rocky Linux 8 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc Multiple Vulnerabilities (crlsa-2026_55764)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202655764 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 kfdeventpages...

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 found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: fs: Prevent file descriptor table allocations exceeding INTMAX When sysctlnropen is set to a very high value for example, 1073741816 as set by systemd, processes attempting to use file descriptors near the limit may trigger massi...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries: Whitelist slab/slub objects for copying to userspace Reading the dispatch trace log from /sys/kernel/debug/powerpc/dtl/cpu- results in a bug when the CONFIGHARDENEDUSERCOPY configuration is enabled, as shown belo...

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 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...

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 during the deactivation of a slab. 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 T...

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 – 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...

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...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-104589)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-104589 advisory. In the Linux kernel, the following vulnerability has been resolved: qede: fix off-by-one in BD ring consumption on buildskb failure qederxbuildskb and...

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...

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 -...