Bug 1680540 (CVE-2018-20784)
Summary: | CVE-2018-20784 kernel: infinite loop in update_blocked_averages() in kernel/sched/fair.c leading to denial of service | ||
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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: | jforbes, vdronov, yozone |
Target Milestone: | --- | Keywords: | Security |
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | If docs needed, set a value | |
Doc Text: |
The CFS Linux kernel scheduler mishandles handling of leaf cfs_rq's in the kernel/sched/fair.c code, which allows a local unprivileged attacker to cause a denial of service (DoS) by entering an infinite loop in update_blocked_averages() function by inducing a high load on a system. Due to the nature of the flaw, a remote network attack (by initiating a magnitude of remote requests) cannot be fully ruled out.
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Story Points: | --- |
Clone Of: | Environment: | ||
Last Closed: | 2019-07-30 13:18:23 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: | 1680544, 1685635, 1685636, 1685637, 1715343, 1716872 | ||
Bug Blocks: | 1680575 |
Description
msiddiqu
2019-02-25 10:01:42 UTC
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1680544] This was fixed for Fedora with the 4.20 stable rebases. This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2019:1959 https://access.redhat.com/errata/RHSA-2019:1959 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2019:1971 https://access.redhat.com/errata/RHSA-2019:1971 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-2018-20784 |