Home/CVE/In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and then making a syn
CVE

CVE-2019-19813

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and then making a syn

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.

MEDIUM · CVSS 5.5 EPSS 0.01247
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
▤

Affected Products & Versions

13
linux kernelall versions
canonical ubuntu linuxall versions
debian linuxall versions
netapp active iq unified manager>= 9.5
netapp data availability servicesall versions
netapp hci management nodeall versions
netapp solidfireall versions
netapp steelstore cloud integrated storageall versions
⚠

Public Exploits & PoCs

1
pocgithub.com · CVE-2019-19813github.com
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD17 Dec 2019 · 06:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

3
usnUSN-4709-1
usnUSN-4708-1
usnUSN-4414-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.htmlMailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20200103-0001/Third Party Advisory
https://usn.ubuntu.com/4414-1/Third Party Advisory
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