Bug 1836244 (CVE-2020-12888)
| Summary: | CVE-2020-12888 Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | Prasad Pandit <ppandit> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | acaringi, airlied, alex.williamson, bhu, blc, bmasney, brdeoliv, bskeggs, dhoward, dvlasenk, esammons, fhrbata, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jlelli, jmaloy, john.j5live, jonathan, josef, jross, jshortt, jstancek, jwboyer, kcarcia, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, masami256, matt, mchehab, mcressma, mjg59, mlangsdo, mvanderw, nmurray, ptalbert, qzhao, rt-maint, rvrbovsk, steved, williams |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: |
A flaw was found in the Linux kernel, where it allows userspace processes, for example, a guest VM, to directly access h/w devices via its VFIO driver modules. The VFIO modules allow users to enable or disable access to the devices' MMIO memory address spaces. If a user attempts to access the read/write devices' MMIO address space when it is disabled, some h/w devices issue an interrupt to the CPU to indicate a fatal error condition, crashing the system. This flaw allows a guest user or process to crash the host system resulting in a denial of service.
|
Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-06-23 17:20:29 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1820632, 1836245, 1837291, 1837292, 1837293, 1837294, 1837295, 1837297, 1837298, 1837299, 1837300, 1837301, 1837302, 1837303, 1837304, 1837305, 1837306, 1837307, 1837308, 1837309, 1837310, 1837311, 1837312, 1837313, 1837314 | ||
| Bug Blocks: | 1827369 | ||
|
Description
Prasad Pandit
2020-05-15 13:13:38 UTC
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1836245] Statement: This issue does not affect the versions of the kernel package as shipped with Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2. This issue affects the versions of the kernel package as shipped with Red Hat Enterprise Linux 7 and 8. Future kernel updates for Red Hat Enterprise Linux 7 and 8 may address this issue. This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2020:2664 https://access.redhat.com/errata/RHSA-2020:2664 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2020:2665 https://access.redhat.com/errata/RHSA-2020:2665 This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2020-12888 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.2 Advanced Update Support Via RHSA-2020:2831 https://access.redhat.com/errata/RHSA-2020:2831 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.3 Advanced Update Support Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions Red Hat Enterprise Linux 7.3 Telco Extended Update Support Via RHSA-2020:2832 https://access.redhat.com/errata/RHSA-2020:2832 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.6 Extended Update Support Via RHSA-2020:2851 https://access.redhat.com/errata/RHSA-2020:2851 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2020:2854 https://access.redhat.com/errata/RHSA-2020:2854 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2020:3010 https://access.redhat.com/errata/RHSA-2020:3010 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2020:3016 https://access.redhat.com/errata/RHSA-2020:3016 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.7 Extended Update Support Via RHSA-2020:3019 https://access.redhat.com/errata/RHSA-2020:3019 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions Via RHSA-2020:3041 https://access.redhat.com/errata/RHSA-2020:3041 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.1 Extended Update Support Via RHSA-2020:3222 https://access.redhat.com/errata/RHSA-2020:3222 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.4 Advanced Update Support Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions Red Hat Enterprise Linux 7.4 Telco Extended Update Support Via RHSA-2020:3230 https://access.redhat.com/errata/RHSA-2020:3230 |