Bug 1908827 (CVE-2021-20265)
| Summary: | CVE-2021-20265 kernel: increase slab leak leads to DoS | ||
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| 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, blc, bmasney, brdeoliv, bskeggs, chwhite, dhoward, dvlasenk, fhrbata, hdegoede, hkrzesin, jarodwilson, jeremy, jforbes, jglisse, jlelli, jonathan, josef, jshortt, jstancek, jwboyer, kcarcia, kernel-maint, kernel-mgr, lgoncalv, linville, masami256, mchehab, mlangsdo, nmurray, ptalbert, qzhao, rvrbovsk, security-response-team, steved, walters, williams |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Linux kernel 4.5-rc3 | Doc Type: | If docs needed, set a value |
| Doc Text: |
A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux kernel when a signal was pending. This flaw allows an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-03-16 19:19:25 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: | 1901744, 1901797, 1935353 | ||
| Bug Blocks: | 1902195, 1935011 | ||
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Description
Dhananjay Arunesh
2020-12-17 17:12:15 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. Acknowledgments: Name: Jay Shin (Red Hat) This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2021:0856 https://access.redhat.com/errata/RHSA-2021:0856 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2021:0857 https://access.redhat.com/errata/RHSA-2021:0857 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-2021-20265 This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Extended Lifecycle Support Via RHSA-2021:1288 https://access.redhat.com/errata/RHSA-2021:1288 |