CVE-2018-7273

NameCVE-2018-7273
DescriptionIn the Linux kernel through 4.15.4, the floppy driver reveals the addresses of kernel functions and global variables using printk calls within the function show_floppy in drivers/block/floppy.c. An attacker can read this information from dmesg and use the addresses to find the locations of kernel code and data and bypass kernel security protections such as KASLR.
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 (attack range: local)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)jessie3.16.56-1+deb8u1vulnerable
jessie (security)3.16.59-1vulnerable
stretch4.9.130-2vulnerable
stretch (security)4.9.110-3+deb9u6vulnerable
buster, sid4.18.20-2fixed
linux-4.9 (PTS)jessie (security)4.9.110-3+deb9u5~deb8u1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)4.15.4-1medium
linux-4.9sourcejessie(unfixed)medium

Notes

[wheezy] - linux <ignored> (Minor issue)
https://lkml.org/lkml/2018/2/20/669

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