{"action":"Upgrade linux to 5.7.17-1 or later.","affected":[{"fixed":"5.7.17-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["5.7.17-1"],"id":"tcs_01M5NE2TKJQCWTG8RPQV87CYKD","modified_at":"2026-09-21T07:02:54.345631631Z","published_at":"2019-12-08T02:15:09.907Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2019-19448","https://security-tracker.debian.org/tracker/CVE-2019-19448"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2019-19448#Debian:14/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2019-19448"}],"summary":"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"}