Description (CNA)
The msr_mtrr_valid function in arch/x86/kvm/mtrr.c in the Linux kernel before 4.6.1 supports MSR 0x2f8, which allows guest OS users to read or write to the kvm_arch_vcpu data structure, and consequently obtain sensitive information or cause a denial of service (system crash), via a crafted ioctl call.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| n/a / n/a | affected n/a |
CWE
No CWE identifiers supplied.
References
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.1
- https://github.com/torvalds/linux/commit/9842df62004f366b9fed2423e24df10542ee0dc5
- http://www.openwall.com/lists/oss-security/2016/05/16/2
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9842df62004f366b9fed2423e24df10542ee0dc5
- https://bugzilla.redhat.com/show_bug.cgi?id=1332139
ADP enrichment
No English description supplied.
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.1
- https://github.com/torvalds/linux/commit/9842df62004f366b9fed2423e24df10542ee0dc5
- http://www.openwall.com/lists/oss-security/2016/05/16/2
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9842df62004f366b9fed2423e24df10542ee0dc5
- https://bugzilla.redhat.com/show_bug.cgi?id=1332139