schrodingers-toctou

El TOCTOU de Schrödinger "...la definición de 'compilador sensato' se vuelve cada vez más flexible." El binario que ejecutas no es el programa que escribiste. El optimizador del compilador reescribe tu código fuente de maneras que nunca ves — y algunos de esos cambios pueden convertir silenciosa ...

gustave

c Airbus 2021, sduverger GUSTAVE - Embedded OS kernel fuzzer What is it ? GUSTAVE is a fuzzing platform for embedded OS kernels. It is based on QEMU and AFL and all of its forkserver siblings. It allows to fuzz OS kernels like simple applications. Thanks to QEMU, it is multi-platform. One can see...

CVE-2023-2640-32629

Ubuntu 权限提升：CVE-2023-2640 和 CVE-2023-32629 这是一个影响某些 Ubuntu 内核的本地权限提升漏洞。它允许非特权用户在已挂载的文件系统上设置特权扩展属性，绕过安全检查并可能获得提升的权限。该漏洞涉及两个 CVE：CVE-2023-2640 和 CVE-2023-32629。受影响的内核版本包括 6.2.0、5.19.0 和 5.4.0，涉及多个 Ubuntu 发行版。及时应用 Ubuntu 提供的补丁并遵循安全最佳实践以缓解这些漏洞至关重要。 用法 1. 使脚本可执行： root@kitploit: chmod +x poc.sh 2. 运行脚本...

CVE-2021-4154

CVE-2021-4154 Este error fue corregido en https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3b0462726e7ef281c35a7a4ae33e93ee2bc9975b Este exploit funciona en la mayoría de los kernels posteriores al parche para: Kernels de CentOS 8 superiores a linux-4.18.0-305.el8...

CVE-2026-89490

CVE-2026-89490 affects the ocfs2 filesystem in the Linux kernel on 32-bit systems. In ocfs2_dir_foreach_blk_el(), the directory position mask derived from sb->s_blocksize (a 32-bit unsigned long) is zero-extended to 64 bits when ANDed with the loff_t-typed ctx->pos, silently clearing the hi...

exploits

Exploits My personal exploit collection of n-days, CTFs, 0days, kernels, browsers and lots of cool stuff :D...

PT-2026-90469

In the Linux kernel, the following vulnerability has been resolved: mm/vmscan: report RCU-tasks quiescent states in shrink lruvec I am seeing some rcu tasks stalls in the Meta fleet during reclaim. INFO: rcu tasks detected stalls on tasks: 0000000088620d09: .. nvcsw: 6735/6735 holdout: 1 idle cpu...

CVE-2024-1086

CVE-2024-1086 Prueba de concepto Proof-of-Concept universal de escalada de privilegios local para CVE-2024-1086, que funciona en la mayoría de los kernels de Linux entre v5.14 y v6.6, incluyendo Debian, Ubuntu y KernelCTF. La tasa de éxito es del 99.4% en las imágenes de KernelCTF...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: UBLK: Failure to recover a device if queue setup is interrupted. In ublkctrlendrecovery, if waitforcompletioninterruptible is interrupted by a signal, the queues are not set up successfully. Therefore, we must fail the...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Tracing/histograms: Fixed the memory leak issue This issue is resolved through commit 46bbe5c671e06f070428b9be142cc4ee5cedebac. As mentioned in commit 46bbe5c671e0 “Tracing: fixed double-free”, the “double-free” issue reported by...

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

Transmitted requests in Xen’s virtual network protocol can consist of multiple parts. Although none of them are actually useful, except for the initial part, any of these parts can be of zero length, meaning they carry no data at all. Apart from the certain initial portion of the data to be...

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

In the Linux kernel, the following vulnerability has been resolved: Wifi: ath11k – Fix for htt.pktlog locking. The ath11k active PDevs are protected by RCUs, but the code that handles htt.pktlog, namely ath11kmacgetarbypdevid, was not marked as a read-side critical section. Mark the relevant code...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the drivers/video/fbdev/smscufx.c file within the Linux kernel, up to version 5.19.12, there is a race condition that can lead to a use-after-free if a physically nearby attacker removes a USB device while the open function is called. This issue is essentially a race condition between ufxopsop...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: i40e: Fixed the idx validation in config queues msg. Ensured that idx is within the range of active/initialized TC’s when iterating over vf-chidx in i40evcconfigqueuesmsg...

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

A memory read flaw that is outside the safe bounds was discovered in receiveencryptedstandard in fs/smb/client/smb2ops.c, within the SMB Client sub-component of the Linux kernel. This issue arises due to an integer underflow occurring during the memcpy operation’s length calculation, resulting in...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: media: v4l2-tpg: fix some memleaks in tpgalloc. In tpgalloc, resources should be deallocated in every possible error-handling path, as they are allocated using for statements. Otherwise, memleaks could occur, since tpgfree is onl...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ip: Fixed a data race around the sysctlfwmarkreflect function. When reading sysctlfwmarkreflect, it can be changed concurrently. Therefore, we need to add READONCE to its reader function...

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

A deadlock flaw was discovered in the Linux kernel’s BPF subsystem. This flaw allows a local user to potentially crash the system...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: soc: aspeed: socinfo: Added kfree in kstrdup. Added kfree in the subsequent error handling steps to avoid memory leaks...

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

In the Linux kernel, the following vulnerability has been resolved: erofs: Fix for lz4 inplace decompression Currently, EROFS can map another compressed buffer for inplace decompression, which was used to handle cases where some pages of compressed data are not actually in-place I/O. However, lik...