Linux CoW Incorrect Access Grant Exploit

A Linux copy-on-write issue can wrongly grant write access. Linux: CoW can wrongly grant write access because of pinned references or THP bug I've stumbled over two ways in which copy-on-write of anonymous memory after fork is currently broken: Page references through the page refcount and a bug ...

python-psutil: Double free because of refcount mishandling

A double free issue has been discovered in python-psutil because of the mishandling of refcounts while converting system data into Python objects in functions like psutildiskpartitions, psutilusers, psutilnetifaddrs, and others. In particular cases, a local attacker may be able to get code...

python-psutil: Double free because of refcount mishandling

A double free issue has been discovered in python-psutil because of the mishandling of refcounts while converting system data into Python objects in functions like psutildiskpartitions, psutilusers, psutilnetifaddrs, and others. In particular cases, a local attacker may be able to get code...

python-psutil: Double free because of refcount mishandling

A double free issue has been discovered in python-psutil because of the mishandling of refcounts while converting system data into Python objects in functions like psutildiskpartitions, psutilusers, psutilnetifaddrs, and others. In particular cases, a local attacker may be able to get code...

OracleVM 3.4 : Unbreakable / etc (OVMSA-2020-0019)

The remote OracleVM system is missing necessary patches to address critical security updates : - KVM: x86: Remove spurious semicolon Joao Martins Orabug: 31413782 - genirq: Use rcu in kstatirqsusr Eric Dumazet - genirq: Make sparseirqlock protect what it should protect Thomas Gleixner Orabug:...

CVE-2020-3610

CVE-2020-3610 describes a double-free in a drawobj added to the drawqueue during IOCTL handling, due to a missing refcount for the object in multiple Snapdragon products (APQ8009/8053/8096AU/8098, MSM89xx, SDM4xx/6xx/7xx, SM8xxx, SXR2130, and related Qualcomm/Android platforms). The Red Hat and N...

Unbreakable Enterprise kernel security update

4.1.12-124.39.1 - qla2xxx: Update driver version to 9.00.00.00.42.0-k1-v2 Arun Easi Orabug: 30372266 - qla2xxx: Fix device discovery when FCP2 device is lost. Arun Easi Orabug: 30372266 - brcmfmac: add subtype check for event handling in data path John Donnelly Orabug: 30776354 CVE-2019-9503 -...

CVE-2019-15791

In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfsbtrfsioctlfdreplace installs an fd referencing a file from the lower filesystem without taking an additional reference to that file. After the btrfs ioctl completes this fd is closed, whi...

CVE-2019-15794

Overlayfs in the Linux kernel and shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, both replace vma-vmfile in their mmap handlers. On error the original value is not restored, and the reference is put for the file to which vmfile points. On...

CVE-2019-15791

In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfsbtrfsioctlfdreplace installs an fd referencing a file from the lower filesystem without taking an additional reference to that file. After the btrfs ioctl completes this fd is closed, whi...

CVE-2019-15794

Overlayfs in the Linux kernel and shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, both replace vma-vmfile in their mmap handlers. On error the original value is not restored, and the reference is put for the file to which vmfile points. On...

Input validation

Overlayfs in the Linux kernel and shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, both replace vma-vmfile in their mmap handlers. On error the original value is not restored, and the reference is put for the file to which vmfile points. On...

Design/Logic Flaw

In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfsbtrfsioctlfdreplace installs an fd referencing a file from the lower filesystem without taking an additional reference to that file. After the btrfs ioctl completes this fd is closed, whi...

CVE-2019-15794 Reference counting error in overlayfs/shiftfs error path when used in conjuction with aufs

Overlayfs in the Linux kernel and shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, both replace vma-vmfile in their mmap handlers. On error the original value is not restored, and the reference is put for the file to which vmfile points. On...

CVE-2019-15794

Overlayfs in the Linux kernel and shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, both replace vma-vmfile in their mmap handlers. On error the original value is not restored, and the reference is put for the file to which vmfile points. On...

CVE-2019-15794

CVE-2019-15794 describes a refcount underflow in the overlayfs/shiftfs error path when used with aufs patches. Specifically, both the Overlayfs and shiftfs patches in the Ubuntu 5.0 and 5.3 kernel series replace vma->vm_file in mmap handlers, and on error do not restore the original value; the...

CVE-2019-15791

CVE-2019-15791 describes a refcount underflow in the Linux kernel shiftfs implementation caused by a non-upstream patch in Ubuntu 5.0/5.3 kernels: shiftfs_btrfs_ioctl_fd_replace() can create a file descriptor to a lower-filesystem file without an extra reference, and closing the FD after the btrf...

CVE-2019-15791

In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfsbtrfsioctlfdreplace installs an fd referencing a file from the lower filesystem without taking an additional reference to that file. After the btrfs ioctl completes this fd is closed, whi...

CVE-2019-15791 Reference count underflow in shiftfs

In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfsbtrfsioctlfdreplace installs an fd referencing a file from the lower filesystem without taking an additional reference to that file. After the btrfs ioctl completes this fd is closed, whi...

Exploit for CVE-2016-0728

This repository is an offensive tool for Linux kernel exploitation, specifically targeting the CVE-2016-0728 vulnerability. The vulnerability is a REFCOUNT overflow/Use-After-Free in keyrings, which allows for local root exploitation. The repository contains two exploit modules, expboost.c and...