NetSight
medium5.5

CVE-2019-19813

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after…

Impact

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in __mutex_lock in kernel/locking/mutex.c. This is related to mutex_can_spin_on_owner in kernel/locking/mutex.c, __btrfs_qgroup_free_meta in fs/btrfs/qgroup.c, and btrfs_insert_delayed_items in fs/btrfs/delayed-inode.c.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
Version 5.0.21
CanonicalUbuntu Linux
Versions 14.04, 16.04, 18.04
DebianDebian Linux
Version 9.0
NetappActive Iq Unified Manager
from 9.5
NetappData Availability Services
All versions
NetappHci Management Node
All versions
NetappSolidfire
All versions
NetappSteelstore Cloud Integrated Storage
All versions
NetappAff A700s Firmware
All versions
NetappFas8300 Firmware
All versions
NetappFas8700 Firmware
All versions
NetappAff A400 Firmware
All versions

Weakness classification

References