CVE-2019-11599

NameCVE-2019-11599
DescriptionThe coredump implementation in the Linux kernel before 5.0.10 does not use locking or other mechanisms to prevent vma layout or vma flags changes while it runs, which allows local users to obtain sensitive information, cause a denial of service, or possibly have unspecified other impact by triggering a race condition with mmget_not_zero or get_task_mm calls. This is related to fs/userfaultfd.c, mm/mmap.c, fs/proc/task_mmu.c, and drivers/infiniband/core/uverbs_main.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-1799-1, DLA-1824-1, DSA-4465-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)stretch4.9.228-1fixed
stretch (security)4.9.272-2fixed
buster4.19.194-1fixed
buster (security)4.19.194-3fixed
bullseye5.10.46-2fixed
sid5.10.46-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcejessie3.16.68-1DLA-1799-1
linuxsourcestretch4.9.168-1+deb9u3DSA-4465-1
linuxsource(unstable)4.19.37-1
linux-4.9sourcejessie4.9.168-1+deb9u3~deb8u1DLA-1824-1

Notes

https://marc.info/?l=linux-mm&m=155355419911404&w=2
https://bugs.chromium.org/p/project-zero/issues/detail?id=1790

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