CVE-2020-10757

NameCVE-2020-10757
DescriptionA flaw was found in the Linux Kernel in versions after 4.5-rc1 in the way mremap handled DAX Huge Pages. This flaw allows a local attacker with access to a DAX enabled storage to escalate their privileges on the system.
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-2242-1, DSA-4698-1, DSA-4699-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)stretch4.9.210-1vulnerable
stretch (security)4.9.210-1+deb9u1fixed
buster4.19.118-2vulnerable
buster (security)4.19.118-2+deb10u1fixed
bullseye, sid5.7.6-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)5.6.14-2
linuxsourcebuster4.19.118-2+deb10u1DSA-4699-1
linuxsourcejessie(not affected)
linuxsourcestretch4.9.210-1+deb9u1DSA-4698-1
linux-4.9sourcejessie4.9.210-1+deb9u1~deb8u1DLA-2242-1

Notes

[jessie] - linux <not-affected> (Vulnerable code introduced later)
https://git.kernel.org/linus/5bfea2d9b17f1034a68147a8b03b9789af5700f9

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