CVE-2020-25599
- State
- Published
- Severity
- Not scored
- Published
- Sep 23, 2020
- Updated
- Aug 4, 2024
- Reserved
- Sep 16, 2020
Description
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.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- https://xenbits.xen.org/xsa/advisory-343.html
- FEDORA-2020-306b84fd07vendor-advisory
- FEDORA-2020-f668e579bevendor-advisory
- DSA-4769vendor-advisory
- openSUSE-SU-2020:1608vendor-advisory
- FEDORA-2020-d46fe34349vendor-advisory
- GLSA-202011-06vendor-advisory
- [oss-security] 20201216 Xen Security Advisory 343 v5 (CVE-2020-25599) - races with evtchn_reset()mailing-list
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.