CVE-2019-19448
HIGH7.8EPSS 0.78%linux-4.19 - security update
Published: 12/8/2019Modified: 4/28/2026
Description
In the Linux kernel 5.0.21 and 5.3.11, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in try_merge_free_space in fs/btrfs/free-space-cache.c because the pointer to a left data structure can be the same as the pointer to a right data structure.
Affected packages (2)
- Debian/linuxfrom 0, < 5.7.17-1
- Debian/linux-4.19from 0, < 4.19.146-1~deb9u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |