Medium severity · published Dec 17, 2019
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…
5.5
CVSS
2.1%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.1% · higher than 82% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
5.0.21 · source: NVD
AI
Active IQ Unified Manager · Netapp
9.5 and later · source: NVD
AA
Aff A400 Firmware · Netapp
All versions, or not specified · source: NVD
AA
Aff A700s Firmware · Netapp
All versions, or not specified · source: NVD
DA
Data Availability Services · Netapp
All versions, or not specified · source: NVD
DL
Debian Linux · Debian
9.0 · source: NVD
FF
Fas8300 Firmware · Netapp
All versions, or not specified · source: NVD
FF
Fas8700 Firmware · Netapp
All versions, or not specified · source: NVD
HF
H610s Firmware · Netapp
All versions, or not specified · source: NVD
HM
Hci Management Node · Netapp
All versions, or not specified · source: NVD
SO
Solidfire · Netapp
All versions, or not specified · source: NVD
SC
Steelstore Cloud Integrated Storage · Netapp
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-19813
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-19813
Exploit
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19813
Mailing List
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
Mailing List
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
Third Party Advisory
https://security.netapp.com/advisory/ntap-20200103-0001/
Third Party Advisory
https://usn.ubuntu.com/4414-1/
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