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...

kernel security and bug fix update

2.6.32-754.35.1.OL6 - Update genkey bug 25599697 2.6.32-754.35.1 - ata libata: fix NULL sdev dereference race in atapiqccomplete Kenneth Yin 1876296 2.6.32-754.34.1 - mm mm: prevent getuserpages from overflowing page refcount Aristeu Rozanski 1705003 - mm mm/hugetlb.c: getuserpages ignores certai...

CVE-2020-25221

A flaw was found in the getgatepage in mm/gup.c in the Linux kernel, where it allows privilege escalation due to incorrect reference counting caused by gate page mishandling of the struct page that backs the vsyscall page. The result is a refcount underflow. This flaw is triggered by any 64-bit...

kernel: use-after-free caused by a malicious USB device in the drivers/usb/class/cdc-acm.c driver

A use-after-free flaw was found in the acmprobe USB subsystem in the Linux kernel. A race condition occurs when a destroy procedure is initiated allowing the refcount to decrement on the interface so early that it is never under counted. A malicious USB device is required for exploit. System...

Unbreakable Enterprise kernel security update

4.14.35-1902.306.2 - rename kABI whitelists to lockedlists Dan Duval Orabug: 31783150 - sched/fair: Fix low cpu usage with high throttling by removing expiration of cpu-local slices Dave Chiluk Orabug: 31350999 CVE-2019-19922 - sched/fair: Fix throttlelist starvation with low CFS quota Phil Auld...

CVE-2020-25221

getgatepage in mm/gup.c in the Linux kernel 5.7.x and 5.8.x before 5.8.7 allows privilege escalation because of incorrect reference counting caused by gate page mishandling of the struct page that backs the vsyscall page. The result is a refcount underflow. This can be triggered by any 64-bit...

UBUNTU-CVE-2020-25221

getgatepage in mm/gup.c in the Linux kernel 5.7.x and 5.8.x before 5.8.7 allows privilege escalation because of incorrect reference counting caused by gate page mishandling of the struct page that backs the vsyscall page. The result is a refcount underflow. This can be triggered by any 64-bit...

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...