cve-2020-25599
Vulnerability from cvelistv5
Published
2020-09-23 21:10
Modified
2024-08-04 15:33
Severity ?
Summary
An issue was discovered in Xen through 4.14.x. There are evtchn_reset() race conditions. Uses of EVTCHNOP_reset (potentially by a guest on itself) or XEN_DOMCTL_soft_reset (by itself covered by XSA-77) can lead to the violation of various internal assumptions. This may lead to out of bounds memory accesses or triggering of bug checks. In particular, x86 PV guests may be able to elevate their privilege to that of the host. Host and guest crashes are also possible, leading to a Denial of Service (DoS). Information leaks cannot be ruled out. All Xen versions from 4.5 onwards are vulnerable. Xen versions 4.4 and earlier are not vulnerable.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00008.htmlMailing List, Third Party Advisory
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2020/12/16/5Mailing List, Third Party Advisory
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4JRXMKEMQRQYWYEPHVBIWUEAVQ3LU4FN/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DA633Y3G5KX7MKRN4PFEGM3IVTJMBEOM/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RJZERRBJN6E6STDCHT4JHP4MI6TKBCJE/
cve@mitre.orghttps://security.gentoo.org/glsa/202011-06Third Party Advisory
cve@mitre.orghttps://www.debian.org/security/2020/dsa-4769Third Party Advisory
cve@mitre.orghttps://xenbits.xen.org/xsa/advisory-343.htmlPatch, Vendor Advisory
Impacted products
n/an/a
Show details on NVD website

To clipboard 

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