CVE-2019-19447

NameCVE-2019-19447
DescriptionIn the Linux kernel 5.0.21, mounting a crafted ext4 filesystem image, performing some operations, and unmounting can lead to a use-after-free in ext4_put_super in fs/ext4/super.c, related to dump_orphan_list in fs/ext4/super.c.
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-2114-1, DLA-2241-1
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)3.16.84-1fixed
stretch4.9.210-1fixed
stretch (security)4.9.210-1+deb9u1fixed
buster4.19.118-2fixed
buster (security)4.19.118-2+deb10u1fixed
bullseye, sid5.7.6-1fixed
linux-4.9 (PTS)jessie (security)4.9.210-1+deb9u1~deb8u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)5.4.6-1
linuxsourcebuster4.19.98-1
linuxsourcejessie3.16.84-1DLA-2241-1
linuxsourcestretch4.9.210-1
linux-4.9sourcejessie4.9.210-1~deb8u1DLA-2114-1

Notes

https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19447
https://git.kernel.org/linus/c7df4a1ecb8579838ec8c56b2bb6a6716e974f37

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