The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applicationsUpgrade Debian:11
xen
to version 4.8.1-1+deb9u3 or higher.
Note: Versions mentioned in the description apply only to the upstream xen
package and not the xen
package as distributed by Debian
.
See How to fix?
for Debian:11
relevant fixed versions and status.
The grant-table feature in Xen through 4.8.x provides false mapping information in certain cases of concurrent unmap calls, which allows backend attackers to obtain sensitive information or gain privileges, aka XSA-218 bug 1.