| Summary: | CVE-2021-20317 kernel: timer tree corruption leads to missing wakeup and system freeze | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | Dhananjay Arunesh <darunesh> |
| 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, alciregi, bhu, brdeoliv, bskeggs, carnil, chwhite, dhoward, dvlasenk, fhrbata, fpacheco, hdegoede, hkrzesin, jarod, jarodwilson, jeremy, jforbes, jglisse, jlelli, jonathan, josef, jshortt, jstancek, jwboyer, kcarcia, kernel-maint, kernel-mgr, lgoncalv, linville, masami256, mchehab, nmurray, pauld, pmatouse, ptalbert, qzhao, rvrbovsk, security-response-team, steved, swood, vkumar, walters, williams |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Linux Kernel 5.4-rc1 | Doc Type: | If docs needed, set a value |
| Doc Text: |
A flaw was found in the Linux kernel. A corrupted timer tree caused the task wakeup to be missing in the timerqueue_add function in lib/timerqueue.c. This flaw allows a local attacker with special user privileges to cause a denial of service, slowing and eventually stopping the system while running OSP. The highest threat from this vulnerability is system availability.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2022-05-11 10:46:28 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Bug Depends On: | 2007094, 2007095, 2007096, 2007099, 2014675, 2014676, 2014677, 2018218, 2018219, 2018220 | ||
| Bug Blocks: | 2001432, 2006769 | ||
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Description
Dhananjay Arunesh
2021-09-17 09:09:53 UTC
Hi, the fixed version should probably be 5.4-rc1. Is this correct? The documentation text mentions 5.3-rc1. In reply to comment #10: > Hi, the fixed version should probably be 5.4-rc1. Is this correct? The > documentation text mentions 5.3-rc1. you are right, thank you. fixed. (In reply to Petr Matousek from comment #11) > In reply to comment #10: > > Hi, the fixed version should probably be 5.4-rc1. Is this correct? The > > documentation text mentions 5.3-rc1. > > you are right, thank you. fixed. Thanks for confirming and fixing up the fixed version information. This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2021:4646 https://access.redhat.com/errata/RHSA-2021:4646 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.4 Extended Update Support Via RHSA-2021:4648 https://access.redhat.com/errata/RHSA-2021:4648 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.4 Extended Update Support Via RHSA-2021:4650 https://access.redhat.com/errata/RHSA-2021:4650 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2021:4647 https://access.redhat.com/errata/RHSA-2021:4647 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Extended Update Support Via RHSA-2021:4875 https://access.redhat.com/errata/RHSA-2021:4875 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Extended Update Support Via RHSA-2021:4871 https://access.redhat.com/errata/RHSA-2021:4871 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-2021-20317 |