CVE-2019-19813

MEDIUM5.5

In the Linux kernel 5

Published Dec 17, 2019

Modified 1 years ago

No fix available

Details

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.

References

WEBhttps://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19813 WEBhttps://lists.debian.org/debian-lts-announce/2020/09/msg00025.html WEBhttps://lists.debian.org/debian-lts-announce/2021/03/msg00010.html WEBhttps://security.netapp.com/advisory/ntap-20200103-0001/ADVISORYhttps://usn.ubuntu.com/4414-1/ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2019-19813

CVSS Analysis

CVSS v3.1

5.5

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

RequiredUI:R

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

HighA:H

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

Ecosystems

Timeline

PublishedDec 17, 2019

ModifiedAug 5, 2024