Bug 1777825 (CVE-2019-18660)
| Summary: | CVE-2019-18660 kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | msiddiqu |
| 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, airlied, bdettelb, bhu, blc, brdeoliv, bskeggs, dhoward, dvlasenk, esammons, fhrbata, hannsj_uhl, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jlelli, john.j5live, jonathan, josef, jross, jschorr, jshortt, jstancek, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, masami256, matt, mchehab, mcressma, mjg59, mlangsdo, nmurray, plougher, ppandit, qzhao, rt-maint, rvrbovsk, security-response-team, steved, tumeya, williams |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: |
A flaw was found in the way the Linux kernel implemented a software flush of the Count Cache (indirect branch cache) and Link (Return Address) Stack on the PowerPC platform. The flushing of these structures helps to prevent SpectreRSB like attacks which may leak information from one user process to another. An unprivileged user could use this flaw to cross the syscall or process boundary and read privileged memory by conducting targeted cache side-channel attacks.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-01-21 20:10:02 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: | 1777686, 1777710, 1777826, 1778342, 1793856, 1794056, 1796810, 1811553, 1811554, 1827626 | ||
| Bug Blocks: | 1777827 | ||
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Description
msiddiqu
2019-11-28 12:06:13 UTC
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1777826] This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2020:0174 https://access.redhat.com/errata/RHSA-2020:0174 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-2019-18660 Statement: This issue affects versions of the kernel package as shipped with Red Hat Enterprise Linux 6, 7 and 8. Future kernel updates for Red Hat Enterprise Linux 6, 7 and 8 may address this issue. This issue does not affect the version of the kernel package as shipped with Red Hat Enterprise MRG 2. This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2020:1016 https://access.redhat.com/errata/RHSA-2020:1016 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2020:1372 https://access.redhat.com/errata/RHSA-2020:1372 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.7 Extended Update Support Via RHSA-2020:1984 https://access.redhat.com/errata/RHSA-2020:1984 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions Via RHSA-2020:2429 https://access.redhat.com/errata/RHSA-2020:2429 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 6 Via RHSA-2020:2933 https://access.redhat.com/errata/RHSA-2020:2933 |