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)
ReferencesDLA-2385-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)stretch4.9.228-1vulnerable
stretch (security)4.9.210-1+deb9u1vulnerable
buster4.19.146-1fixed
buster (security)4.19.118-2+deb10u1vulnerable
bullseye, sid5.8.10-1fixed
linux-4.19 (PTS)stretch (security)4.19.146-1~deb9u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcebuster4.19.146-1
linuxsource(unstable)5.7.17-1
linux-4.19sourcestretch4.19.146-1~deb9u1DLA-2385-1

Notes

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

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