CVE-2018-7755

NameCVE-2018-7755
DescriptionAn issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the location 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: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)jessie (security), jessie3.16.56-1+deb8u1vulnerable
stretch4.9.82-1+deb9u3vulnerable
stretch (security)4.9.88-1+deb9u1vulnerable
buster4.16.12-1vulnerable
sid4.16.16-2vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)(unfixed)medium

Notes

https://lkml.org/lkml/2018/3/7/1116

Search for package or bug name: Reporting problems