CVE-2019-19816
CVSS v3
7.8
HIGH
EPSS Score
3.3 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image and performing some operations can cause slab-out-of-bounds write access in __btrfs_map_block in fs/btrfs/volumes.c, because a value of 1 for the number of data stripes is mishandled.
Technical details
- Published
- 2019-12-17
Frequently asked questions
What is CVE-2019-19816?
In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image and performing some operations can cause slab-out-of-bounds write access in __btrfs_map_block in fs/btrfs/volumes.c, because a value of 1 for the number of data stripes is mishandled.
Is CVE-2019-19816 actively exploited?
Active exploitation of CVE-2019-19816 has not been confirmed. Its EPSS score was 3.3% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2019-19816?
CVE-2019-19816 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2019-19816 affecting your environment?
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