CVE-2014-7843

NameCVE-2014-7843
DescriptionThe __clear_user function in arch/arm64/lib/clear_user.S in the Linux kernel before 3.17.4 on the ARM64 platform allows local users to cause a denial of service (system crash) by reading one byte beyond a /dev/zero page boundary.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

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)6.1.85-1fixed
trixie6.6.15-2fixed
sid6.7.9-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcewheezy(not affected)
linuxsource(unstable)3.16.7-ckt2-1
linux-2.6source(unstable)(not affected)

Notes

[wheezy] - linux <not-affected> (arm64 support introduced in 3.7)
- linux-2.6 <not-affected> (arm64 support introduced in 3.7)
https://bugzilla.redhat.com/show_bug.cgi?id=1163744
Upstream patch proposal: https://lkml.org/lkml/2014/11/12/584

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