kernel: RDMA/rxe: Fix a use-after-free problem in rxe_mmap

A flaw was found in the Linux kernel's RDMA/rxe component. A race condition in the rxemmap function, which manages memory for Remote Direct Memory Access RDMA operations, can lead to a use-after-free vulnerability. A local attacker could exploit this timing issue to cause a system crash, resultin...

kernel: netfilter: synproxy: refresh tcphdr after skb_ensure_writable

A flaw was found in the Linux kernel's netfilter synproxy module. When handling TCP timestamp options, a stale pointer can be used after memory reallocation. This can result in memory corruption, where data is written to a freed memory area, or lead to packets being sent with an incorrect checksu...

gustave

c Airbus 2021, sduverger GUSTAVE - Fuzzer de noyau OS embarqué Qu'est-ce que c'est ? GUSTAVE est une plateforme de fuzzing pour les noyaux de systèmes d'exploitation embarqués. Il est basé sur QEMU et AFL et tous ses frères forkserver. Il permet de fuzzer les noyaux OS comme de simples...

meltdown-exploit

PREUVE DE CONCEPT DE L'EXPLOIT MELTDOWN Les optimisations spéculatives exécutent du code de manière non sécurisée, laissant des traces de données dans la microarchitecture comme le cache. Lipp et al. 2018 ont publié leur code le 09/01/2018 sur https://github.com/IAIK/meltdown. Consultez leur...

difuze

difuze : Fuzzer pour les pilotes du noyau Linux Ce dépôt contient toutes les sources scripts d'installation inclus dont vous avez besoin pour faire fonctionner difuze. Testé sur Ubuntu = 14.04.5 LTS 0. Exécuter difuze depuis Docker Consultez le readme Comme expliqué dans notre article, il y a deu...

magisk-renef

MagiskRenef Un module Magisk / KernelSU / APatch qui empaquette et exécute automatiquement renef — un kit d'instrumentation dynamique pour Android. Inspiré par magisk-frida. Prérequis Appareil Android rooté Magisk / KernelSU / KernelSU Next / APatch ARM64 uniquement — renef ne prend en charge que...

vsock_poc

vsockpoc Исследование ошибки, стоящей за CVE-2021-26708 В этом репозитории содержатся краткие заметки о CVE-2021-26708 и о том, как эту ошибку можно превратить в примитив записи типа Use After Free. Приведённый здесь PoC — это не полноценный эксплойт, а лишь мой тестовый стенд, который я...

kernel: ipc: limit next_id allocation to the valid ID range

A flaw was found in the Linux kernel. The ipcidralloc function, used in the checkpoint/restore path for SysV Inter-Process Communication IPC ID allocation, does not properly limit ID allocation to the valid range. This can result in the system attempting to dereference freed memory, leading to a...

kernel: sctp: purge outqueue on stale COOKIE-ECHO handling

A flaw was found in the Linux kernel's Stream Control Transmission Protocol SCTP implementation. This vulnerability, a use-after-free, occurs when the system processes a Stale Cookie ERROR during the setup or reconfiguration of an SCTP association. A remote attacker could exploit this by sending...

kernel: xfrm: policy: fix use-after-free on inexact bin in xfrm_policy_bysel_ctx()

A flaw was found in the Linux kernel. A race condition exists in the xfrm policy handling, specifically within the xfrmpolicybyselctx function. This flaw allows for a use-after-free vulnerability, where memory is accessed after it has been released. This can lead to system instability or a denial...

kernel: ip6: vti: Use ip6_tnl.net in vti6_changelink()

A flaw was found in the Linux kernel's IPv6 Virtual Tunnel Interface vti6 component. An unprivileged local user, particularly within a user namespace, could exploit a vulnerability related to incorrect network namespace handling during the movement of a vti6 tunnel. This issue can lead to a kerne...

kernel: xfrm: hold dev ref until after transport_finish NF_HOOK

A flaw was found in the Linux kernel's xfrm IP eXtensible FRamework subsystem. This vulnerability involves a race condition where a network device's reference is released too early during packet processing after asynchronous cryptography. This premature release can lead to the system attempting t...

kernel: ip6: vti: Use ip6_tnl.net in vti6_siocdevprivate()

A flaw was found in the Linux kernel's IPv6 Virtual Tunnel Interface VTI module. When a VTI tunnel device is moved to a different network environment, an unprivileged user in a separate user space can manipulate tunnel parameters. This manipulation could allow the user to intercept or redirect...

kernel: nvmet: fix pre-auth out-of-bounds heap read in Discovery Get Log Page

A flaw was found in the Linux kernel's nvmet subsystem. An unauthenticated remote attacker could exploit an out-of-bounds heap read vulnerability in the Discovery Get Log Page function. By sending a specially crafted request with a manipulated offset, an attacker could read sensitive kernel memor...

kernel: ALSA: firewire-motu: fix buffer overflow in hwdep read for DSP events

In the Linux kernel, the following vulnerability has been resolved: ALSA: firewire-motu: fix buffer overflow in hwdep read for DSP events The DSP event handling code in hwdepread could write more bytes to the user buffer than requested, when a user provides a buffer smaller than the event header...

kernel: dm cache policy smq: fix missing locks in invalidating cache blocks

A flaw was found in the Linux kernel's device-mapper dm cache policy, specifically within the smq module. In passthrough mode, the invalidatemapping operation lacks proper locking, allowing for concurrent access. This can lead to data races, resulting in data corruption or use-after-free issues,...

kernel: AMD-SN-7061: Safe RET Interrupt Vulnerability

An attacker executing code on affected system could inject an interrupt at a precise moment to disrupt "Safe RET", the default Linux mitigation for speculative Return Overflow SRSO, which could potentially weaken that protection and may result in information disclosure...

kernel: xfrm: input: hold netns during deferred transport reinjection

A flaw was found in the Linux kernel's xfrm input component. The transport-mode reinjection process, which handles network packet re-injection, stores a network namespace pointer that must remain valid until a deferred callback completes. However, a missing reference count for the network namespa...

kernel: scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer

A flaw was found in the Linux kernel's libiscsitcp component. A remote attacker, acting as a malicious iSCSI target, could send a specially crafted iSCSI SCSI Command Response ISCSIOPSCSICMDRSP with an oversized data segment. This could lead to a buffer overflow in a fixed-size buffer, potentiall...

kernel: RDMA/rxe: Fix responder UAF on IB_QP_MAX_DEST_RD_ATOMIC modify_qp

A flaw was found in the Linux kernel's Remote Direct Memory Access RDMA subsystem, specifically within the rxe component. A local, unprivileged user could exploit a race condition during a queue pair modification operation. This could lead to a use-after-free vulnerability, allowing the attacker ...