Bug 1888433 (CVE-2020-4788)
| Summary: | CVE-2020-4788 kernel: speculation on incompletely validated data on IBM Power9 | ||
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| Product: | [Other] Security Response | Reporter: | Guilherme de Almeida Suckevicz <gsuckevi> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | acaringi, adscvr, airlied, bhu, blc, bmasney, brdeoliv, bskeggs, dhoward, dramseur, dvlasenk, fhrbata, hdegoede, hkrzesin, iboverma, itamar, jarodwilson, jeremy, jforbes, jhunter, jlelli, jonathan, josef, jross, jshortt, jstancek, jwboyer, kcarcia, kernel-maint, kernel-mgr, kmitts, lgoncalv, linville, masami256, mchehab, mcressma, mgala, mjg59, mlangsdo, nmurray, ptalbert, qzhao, rt-maint, rvrbovsk, security-response-team, steved, walters, williams, wmealing |
| 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. IBM Power9 processors can speculatively operate on data stored in the L1 cache before it has been completely validated. The attack has limited access to memory and is only able to access memory normally permissible to the execution context. The highest threat from this vulnerability is to data confidentiality.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2022-05-11 06:15:34 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: | 1894804, 1894805, 1896200, 1896201, 1900437 | ||
| Bug Blocks: | 1888435 | ||
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Description
Guilherme de Almeida Suckevicz
2020-10-14 20:37:11 UTC
Acknowledgments: Name: Anthony Steinhauser (Google's Safeside Project) Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1900437] External References: https://lore.kernel.org/linuxppc-dev/20201119231333.361771-1-dja@axtens.net/T/#me4f6a44748747e3327d27cd95200bf7a87486ffc https://www.openwall.com/lists/oss-security/2020/11/20/3 https://exchange.xforce.ibmcloud.com/vulnerabilities/189296 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. This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2022:1988 https://access.redhat.com/errata/RHSA-2022:1988 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-2020-4788 |