Bug 1812088 (CVE-2020-10255, TRRespass) - CVE-2020-10255 hw: dram: circumvent TRR to induce bit flips via Rowhammer
Summary: CVE-2020-10255 hw: dram: circumvent TRR to induce bit flips via Rowhammer
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2020-10255, TRRespass
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 1802937
TreeView+ depends on / blocked
 
Reported: 2020-03-10 14:02 UTC by Prasad Pandit
Modified: 2021-06-16 02:57 UTC (History)
33 users (show)

Fixed In Version:
Doc Type: Known Issue
Doc Text:
A Rowhammer flaw was found in latest DDR4 DRAM hardware chips. These chips implement Target Row Refresh (TRR) mitigation to prevent a Rowhammer flaw-induced bit corruption across memory space. An unprivileged system user may leverage this flaw and use Rowhammer attack variants to induce bit corruptions across memory space, potentially resulting in a denial of service or privileges escalation scenarios. The highest threat from this vulnerability is to system availability.
Clone Of:
Environment:
Last Closed: 2020-03-10 16:32:03 UTC
Embargoed:

Attachments (Terms of Use)

Description Prasad Pandit 2020-03-10 14:02:21 UTC 
A flaw was found in the way latest DDR4 DRAM chips implement Target Row Refresh (TRR) mitigation to prevent Rowhammer induced bit flips across memory space. An unprivileged system user may leverage this flaw and use Rowhammer attack variants to induce bit corruptions across memory space, potentially resulting in DoS OR privileges escalation scenarios.
Comment 2 Prasad Pandit 2020-03-10 14:02:28 UTC 
External References:

https://access.redhat.com/articles/1377393
https://www.vusec.net/projects/trrespass
https://download.vusec.net/papers/trrespass_sp20.pdf
Comment 3 Product Security DevOps Team 2020-03-10 16:32:03 UTC 
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-2020-10255
Comment 4 Prasad Pandit 2020-03-11 07:22:58 UTC 
Mitigation:

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Comment 5 Eric Christensen 2020-03-12 13:17:49 UTC 
Statement:

This hardware issue cannot be fixed via usual software updates. For additional information, please refer to the Red Hat Knowledgebase article:  https://access.redhat.com/articles/1377393.
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