CVE-2019-9213

NameCVE-2019-9213
DescriptionIn the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a check for the mmap minimum address, which makes it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-1731-1, DLA-1771-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)buster4.19.249-2fixed
buster (security)4.19.304-1fixed
bullseye5.10.209-2fixed
bullseye (security)5.10.205-2fixed
bookworm6.1.76-1fixed
bookworm (security)6.1.69-1fixed
trixie6.6.15-2fixed
sid6.7.9-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcejessie3.16.64-1DLA-1731-1
linuxsourcestretch4.9.168-1
linuxsource(unstable)4.19.28-1
linux-4.9sourcejessie4.9.168-1~deb8u1DLA-1771-1

Notes

Fixed by: https://git.kernel.org/linus/0a1d52994d440e21def1c2174932410b4f2a98a1 (5.0)
https://bugs.chromium.org/p/project-zero/issues/detail?id=1792

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