CVE-2019-19448

NameCVE-2019-19448
DescriptionIn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)jessie3.16.56-1+deb8u1vulnerable
jessie (security)3.16.81-1vulnerable
stretch4.9.210-1vulnerable
stretch (security)4.9.189-3+deb9u2vulnerable
buster4.19.98-1vulnerable
buster (security)4.19.67-2+deb10u2vulnerable
bullseye5.4.19-1vulnerable
sid5.5.13-2vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)(unfixed)

Notes

https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19448

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