REDHAT-BUG-1144835
First published: Sun Sep 21 2014(Updated: )
On systems with invept instruction support (corresponding bit in IA32_VMX_EPT_VPID_CAP MSR is set) guest invocation of invept causes vm exit, which is currently not handled and causes unknown exit error to be propagated to userspace. A local unprivileged guest user could use this flaw to crash the guest. Upstream fix: <a href="http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bfd0a56b90005f8c8a004baf407ad90045c2b11e">http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bfd0a56b90005f8c8a004baf407ad90045c2b11e</a> Acknowledgements: Red Hat would like to thank the Advanced Threat Research team at Intel Security for reporting this issue.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Linux |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bfd0a56b90005f8c8a004baf407ad90045c2b11e
- https://access.redhat.com/support/policy/updates/errata/
- https://rhn.redhat.com/errata/RHSA-2014-1724.html
- https://rhn.redhat.com/errata/RHSA-2014-1843.html
- https://rhn.redhat.com/errata/RHSA-2015-0126.html
- https://rhn.redhat.com/errata/RHSA-2015-0284.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1144835
Frequently Asked Questions
What is the severity of REDHAT-BUG-1144835?
The severity of REDHAT-BUG-1144835 is categorized as high due to the potential for a local unprivileged guest user to crash the system.
How do I fix REDHAT-BUG-1144835?
To fix REDHAT-BUG-1144835, you should update your Red Hat Linux Kernel to the latest version that addresses this issue.
Which systems are affected by REDHAT-BUG-1144835?
Systems that support the invept instruction and have the corresponding bit in IA32_VMX_EPT_VPID_CAP MSR set are affected by REDHAT-BUG-1144835.
Can REDHAT-BUG-1144835 lead to data loss?
While REDHAT-BUG-1144835 primarily causes a system crash, it could potentially lead to data loss if unsaved work is present.
Is REDHAT-BUG-1144835 exploitable remotely?
No, REDHAT-BUG-1144835 requires local access by an unprivileged guest user to exploit the vulnerability.
- agent/type
- agent/first-publish-date
- agent/last-modified-date
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2014-3645
- agent/severity
- agent/references
- agent/description
- agent/event
- agent/source
- agent/tags
- agent/softwarecombine
- agent/guess-ai
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/red hat
- canonical/red hat linux