CVE-2018-10853

Description (CNA)

A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest.

Affected (CNA)

CWE

CWE-250

References

• https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10853
• https://usn.ubuntu.com/3777-1/
• https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=129a72a0d3c8e139a04512325384fe5ac119e74
• https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html
• https://usn.ubuntu.com/3777-2/
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c9fa24ca7c9c47605672916491f79e8ccacb9e6
• https://www.openwall.com/lists/oss-security/2018/09/02/1
• http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html
• https://access.redhat.com/errata/RHSA-2019:2043
• https://access.redhat.com/errata/RHSA-2019:2029
• https://access.redhat.com/errata/RHSA-2020:0036
• https://access.redhat.com/errata/RHSA-2020:0103
• https://access.redhat.com/errata/RHSA-2020:0179

ADP enrichment