CVE-2021-41091

CVE-2021-41091 This exploit offers an in-depth look at the CVE-2021-41091 security vulnerability and provides a step-by-step guide on how to utilize the exploit script to achieve privilege escalation on a host. Vulnerability Summary CVE-2021-41091 is a flaw in Moby Docker Engine that allows...

Vulnerable-Docker-Engine

CVE-2021-41091 This exploit offers an in-depth look at the CVE-2021-41091 security vulnerability and provides a step-by-step guide on how to utilize the exploit script to achieve privilege escalation on a host. Vulnerability Summary CVE-2021-41091 is a flaw in Moby Docker Engine that allows...

CVE-2023-0386

README root@kitploit: gcc -Wall exp.c pkg-config fuse --cflags --libs -o exp ./exp /tmp Vulnerability Analysis The theoretical knowledge in this article namespaces, overlay filesystem, fuse filesystem, etc. comes from ChatGPT. Vulnerability Overview Vulnerability ID: CVE-2023-0386 Vulnerable...

CVE-2023-0386-go-poc

PoC em Go do CVE-2023-0386 ./main /tmp/fuse Executará o programa e criará um mount fuse no diretório "/tmp/fuse". Espera que você tenha compilado o shell no diretório raiz com o nome "shell" por padrão. Depois de executar o programa, deve haver um binário executável no diretório "/tmp/ovlmerged/"...

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

In the Linux kernel, the following vulnerabilities have been resolved: ovl: Fixed a UAF Use-After-Free in ovldentryupdatereval by moving dput before ovllinkup. The issue arose because dputupper was called before ovldentryupdatereval, while upper-dflags was still accessed in ovldentryremote. Movin...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ovl: fixed null pointer dereference in ovlgetaclrcu The sequence of operations is as follows: P1 P2 pathopenat linkpathwalk maylookup inodepermissionrcu ovlpermission aclpermissioncheck checkacl getcachedaclrcu ovlget inodeacl...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ovl: Use the “buf” flexible array as the destination for memcpy. The “buf” flexible array must be used as the destination for memcpy to avoid false positive run-time warnings caused by the recent FORTIFYSOURCE hardening measures:...

kernel: selinux: fix overlayfs mmap() and mprotect() access checks

A flaw was found in the Linux kernel's SELinux security module when handling overlayfs. The existing security model for overlayfs does not properly enforce access controls for mmap and mprotect operations. This oversight could allow a local attacker to bypass intended security policies, potential...

Oracle Linux 9 : kernel (ELSA-2026-30848)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-30848 advisory. - RDMA/mlx5: Fix error path fall-through in mlx5ibdevressrqinit CKI Backport Bot RHEL-179994 CVE-2026-46176 - RDMA/vmwpvrdma: Fix double free on...

Linux Distros Unpatched Vulnerability : CVE-2026-53174

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: ovl: keep err zero after successful ovlcacheget ovliteratemerged stores PTRERRcache in err...

CVE-2026-53174

A flaw was found in the Linux kernel's overlay filesystem ovl component. Specifically, an issue in the ovliteratemerged function incorrectly stores an error pointer even after a successful cache operation. This can lead to the function returning a misleading non-zero error, potentially causing...

SUSE CVE-2026-53174

In the Linux kernel, the following vulnerability has been resolved: ovl: keep err zero after successful ovlcacheget ovliteratemerged stores PTRERRcache in err before checking ISERRcache. On success err holds the truncated cache pointer and can be returned as a bogus non-zero error. The syzbot...

UBUNTU-CVE-2026-53174

In the Linux kernel, the following vulnerability has been resolved: ovl: keep err zero after successful ovlcacheget ovliteratemerged stores PTRERRcache in err before checking ISERRcache. On success err holds the truncated cache pointer and can be returned as a bogus non-zero error. The syzbot...

EUVD-2026-39265

In the Linux kernel, the following vulnerability has been resolved: ovl: keep err zero after successful ovlcacheget ovliteratemerged stores PTRERRcache in err before checking ISERRcache. On success err holds the truncated cache pointer and can be returned as a bogus non-zero error. The syzbot...

CVE-2026-53174 ovl: keep err zero after successful ovl_cache_get()

In the Linux kernel, the following vulnerability has been resolved: ovl: keep err zero after successful ovlcacheget ovliteratemerged stores PTRERRcache in err before checking ISERRcache. On success err holds the truncated cache pointer and can be returned as a bogus non-zero error. The syzbot...

CVE-2026-53174

CVE-2026-53174 affects the Linux kernel overlay filesystem (ovl). The bug in ovl_iterate_merged() stores PTR_ERR(cache) in err before validating the cache with IS_ERR(cache), so on success err may hold a truncated cache pointer and be returned as a bogus non-zero error. The repro path goes throug...

CVE-2026-53174

In the Linux kernel, the following vulnerability has been resolved: ovl: keep err zero after successful ovlcacheget ovliteratemerged stores PTRERRcache in err before checking ISERRcache. On success err holds the truncated cache pointer and can be returned as a bogus non-zero error. The syzbot...

CVE-2026-53174 ovl: keep err zero after successful ovl_cache_get()

In the Linux kernel, the following vulnerability has been resolved: ovl: keep err zero after successful ovlcacheget ovliteratemerged stores PTRERRcache in err before checking ISERRcache. On success err holds the truncated cache pointer and can be returned as a bogus non-zero error. The syzbot...

RLSA-2026:27812 Important: kernel-rt security update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fixes: kernel: selinux: fix overlayfs mmap and mprotect access checks CVE-2026-46054 For more details about the security issues, including the...

kernel security update

An update is available for kernel. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The kernel packages contain the Linux kernel, the core of any Linux operating...