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prionPRIOn knowledge basePRION:CVE-2019-19813
HistoryDec 17, 2019 - 6:15 a.m.

Design/Logic Flaw

2019-12-1706:15:00
PRIOn knowledge base
www.prio-n.com
14

AI Score

5.8

Confidence

High

EPSS

0.001

Percentile

31.7%

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.