CVE-2021-28702
Summary
| CVE | CVE-2021-28702 |
|---|
| State | PUBLIC |
|---|
| Assigner | [email protected] |
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| Source Priority | CVE Program / NVD first with legacy fallback |
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| Published | 2021-10-06 14:15:00 UTC |
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| Updated | 2023-11-07 03:32:00 UTC |
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| Description | PCI devices with RMRRs not deassigned correctly Certain PCI devices in a system might be assigned Reserved Memory Regions (specified via Reserved Memory Region Reporting, "RMRR"). These are typically used for platform tasks such as legacy USB emulation. If such a device is passed through to a guest, then on guest shutdown the device is not properly deassigned. The IOMMU configuration for these devices which are not properly deassigned ends up pointing to a freed data structure, including the IO Pagetables. Subsequent DMA or interrupts from the device will have unpredictable behaviour, ranging from IOMMU faults to memory corruption. |
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NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
|---|
| [SECURITY] Fedora 35 Update: xen-4.15.1-2.fc35 - package-announce - Fedora Mailing-Lists |
|
lists.fedoraproject.org |
|
| oss-security - Xen Security Advisory 386 v2 (CVE-2021-28702) - PCI devices with
RMRRs not deassigned correctly |
MLIST |
www.openwall.com |
|
| Xen: Multiple Vulnerabilities (GLSA 202208-23) — Gentoo security |
GENTOO |
security.gentoo.org |
|
| [SECURITY] Fedora 33 Update: xen-4.14.3-2.fc33 - package-announce - Fedora Mailing-Lists |
FEDORA |
lists.fedoraproject.org |
|
| [SECURITY] Fedora 34 Update: xen-4.14.3-2.fc34 - package-announce - Fedora Mailing-Lists |
|
lists.fedoraproject.org |
|
| [SECURITY] Fedora 33 Update: xen-4.14.3-2.fc33 - package-announce - Fedora Mailing-Lists |
|
lists.fedoraproject.org |
|
| Debian -- Security Information -- DSA-5017-1 xen |
DEBIAN |
www.debian.org |
|
| [SECURITY] Fedora 35 Update: xen-4.15.1-2.fc35 - package-announce - Fedora Mailing-Lists |
FEDORA |
lists.fedoraproject.org |
|
| [SECURITY] Fedora 34 Update: xen-4.14.3-2.fc34 - package-announce - Fedora Mailing-Lists |
FEDORA |
lists.fedoraproject.org |
|
| xenbits.xenproject.org/xsa/advisory-386.txt |
MISC |
xenbits.xenproject.org |
|
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 184281 Debian Security Update for xen (CVE-2021-28702)
- 281988 Fedora Security Update for xen (FEDORA-2021-0b7a484688)
- 281989 Fedora Security Update for xen (FEDORA-2021-80bbe7def0)
- 500804 Alpine Linux Security Update for xen
- 501521 Alpine Linux Security Update for xen
- 501799 Alpine Linux Security Update for xen
- 502458 Alpine Linux Security Update for xen
- 504546 Alpine Linux Security Update for xen
- 710600 Gentoo Linux Xen Multiple Vulnerabilities (GLSA 202208-23)
- 751411 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2021:3852-1)
- 751454 OpenSUSE Security Update for xen (openSUSE-SU-2021:1543-1)
- 751474 OpenSUSE Security Update for xen (openSUSE-SU-2021:3968-1)
- 751477 SUSE Enterprise Linux Security Update for xen (SUSE-SU-2021:3977-1)
