5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
7.1 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:N/A:C
0.001 Low
EPSS
Percentile
30.1%
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.
Author | Note |
---|---|
tyhicks | As of 2020-01-09, no upstream fix is available |
sbeattie | upstream developer asserts in suse bug that the enhanced btrfs tree-checker addresses this issue, which was backported to at least the 4.4 kernel. |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux-gcp-4.15 | < 4.15.0-1080.90 | UNKNOWN |
ubuntu | 18.04 | noarch | linux | < 4.15.0-109.110 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < 4.4.0-201.233 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-hwe | < 5.3.0-26.28~18.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-hwe | < 4.15.0-112.113~16.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-kvm | < 4.15.0-1069.70 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-kvm | < 4.4.0-1087.96 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-oem | < 4.15.0-1091.101 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1077.81 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1085.89) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19813
github.com/bobfuzzer/CVE/tree/master/CVE-2019-19813
launchpad.net/bugs/cve/CVE-2019-19813
nvd.nist.gov/vuln/detail/CVE-2019-19813
security-tracker.debian.org/tracker/CVE-2019-19813
ubuntu.com/security/notices/USN-4414-1
ubuntu.com/security/notices/USN-4708-1
ubuntu.com/security/notices/USN-4709-1
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
7.1 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:N/A:C
0.001 Low
EPSS
Percentile
30.1%