| Summary: | CVE-2021-26708 kernel: race conditions caused by wrong locking in net/vmw_vsock/af_vsock.c | ||
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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: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | acaringi, adscvr, airlied, alciregi, bhu, blc, bmasney, brdeoliv, bskeggs, chwhite, d.alvarez, dhoward, dramseur, dvlasenk, dvolkov, fhrbata, hdegoede, hkrzesin, itamar, jarodwilson, jeremy, jforbes, jglisse, jhunter, jlelli, jonathan, josef, jshortt, jstancek, jwboyer, kcarcia, kernel-maint, kernel-mgr, kmitts, kyoshida, lgoncalv, linville, masami256, mchehab, mgala, mjudeiki, mlangsdo, mvanderw, nmurray, ptalbert, qzhao, rvrbovsk, security-response-team, steved, unixbasis, walters, williams |
| 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. Wrong locking in the AF_VSOCK socket can cause a local privilege escalation, bypassing SMEP and SMAP. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-04-06 17:35:33 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: | 1925948, 1925595, 1925599, 1925600, 1925601, 1925602, 1925603, 1925949 | ||
| Bug Blocks: | 1925523 | ||
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Description
Dhananjay Arunesh
2021-02-05 15:55:38 UTC
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1925595] External References: https://www.openwall.com/lists/oss-security/2021/02/04/5 Acknowledgments: Name: Alexander Popov This is fixed for Fedora with the 5.10.13 stable kernel update. Statement: This issue does affect the Red Hat Enterprise Linux 8 kernel versions kernel-4.18.0-240 onwards, starting with Red Hat Enterprise Linux 8.3 GA, which introduced VSOCK multi-transport support. Prior Red Hat Enterprise Linux kernel versions are not affected by this issue. This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2021:1081 https://access.redhat.com/errata/RHSA-2021:1081 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2021:1093 https://access.redhat.com/errata/RHSA-2021:1093 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-2021-26708 |