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-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.

CVSS v3.1 NVD

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v2.0 NVD

7.1 HIGHAV:N/AC:M/Au:N/C:N/I:N/A:C

EPSS

2.13% chance of exploitation in the next 30 days, 82nd percentile

Published

2019-12-17

Updated

2024-08-05

Proof-of-concept exploits (1)

• bobfuzzer/CVE/tree/master/CVE-2019-1981361★ · 2020-10-25

Security advisories

• https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
• https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
• https://security.netapp.com/advisory/ntap-20200103-0001
• https://usn.ubuntu.com/4414-1

References

• CVE Record
• NVD entry

Related

• CVE-2019-18885
• CVE-2019-19036
• CVE-2019-19037
• CVE-2019-19039
• CVE-2019-19318
• CVE-2019-19319