CVE-2020-36311

NameCVE-2020-36311
DescriptionAn issue was discovered in the Linux kernel before 5.9. arch/x86/kvm/svm/sev.c allows attackers to cause a denial of service (soft lockup) by triggering destruction of a large SEV VM (which requires unregistering many encrypted regions), aka CID-7be74942f184.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2714-1, DSA-4941-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)bullseye5.10.218-1fixed
bullseye (security)5.10.221-1fixed
bookworm6.1.94-1fixed
bookworm (security)6.1.99-1fixed
trixie6.9.8-1fixed
sid6.9.9-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcestretch(not affected)
linuxsourcebuster4.19.194-3DSA-4941-1
linuxsource(unstable)5.9.1-1
linux-4.19sourcestretch4.19.194-3~deb9u1DLA-2714-1

Notes

[stretch] - linux <not-affected> (Vulnerable code not present)
https://git.kernel.org/linus/7be74942f184fdfba34ddd19a0d995deb34d4a03

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