xen: pin count / page reference race in grant table code (XSA-236)
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | n/a | affected |
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No data.
No data available yet.
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-1549-1 | xen security update |
Debian DSA |
DSA-4050-1 | xen security update |
EUVD |
EUVD-2017-7049 | An issue was discovered in Xen through 4.9.x. Grant copying code made an implication that any grant pin would be accompanied by a suitable page reference. Other portions of code, however, did not match up with that assumption. When such a grant copy operation is being done on a grant of a dying domain, the assumption turns out wrong. A malicious guest administrator can cause hypervisor memory corruption, most likely resulting in host crash and a Denial of Service. Privilege escalation and information leaks cannot be ruled out. |
No CVSS v4.0
No CVSS v3.1
This CVE is not in the KEV list.
Exploit prediction score: 2.8% (2.830% probability within 30 days)
Key SSVC decision points have not yet been added.
No history.