Bug 1858679 (CVE-2020-14331)
| Summary: | CVE-2020-14331 kernel: kernel: buffer over write in vgacon_scroll | ||
|---|---|---|---|
| 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, airlied, bhu, blc, bmasney, brdeoliv, bskeggs, dhoward, dvlasenk, esammons, fhrbata, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jlelli, john.j5live, jonathan, josef, jross, jshortt, jstancek, jwboyer, kcarcia, kernel-maint, kernel-mgr, lgoncalv, linville, masami256, matt, mchehab, mcressma, mjg59, mlangsdo, nmurray, pmatouse, ptalbert, qzhao, rt-maint, rvrbovsk, security-response-team, steved, 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’s implementation of the invert video code on VGA consoles when a local attacker attempts to resize the console, calling an ioctl VT_RESIZE, which causes an out-of-bounds write to occur. This flaw allows a local user with access to the VGA console to crash the system, potentially escalating their privileges on the system. 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: | 2020-10-20 14:21:13 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: | 1859467, 1859468, 1859469, 1859470, 1859471, 1859472, 1859473, 1859474, 1859475, 1861348 | ||
| Bug Blocks: | 1856727 | ||
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Description
Dhananjay Arunesh
2020-07-20 05:18:11 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. Statement: This flaw is rated as a having Moderate impact, because only local user with access to VGA console can trigger it (for example if booting with param "nomodeset"). Acknowledgments: Name: Yunhai Zhang (NSFOCUS Security Team) Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1861348] References: https://www.openwall.com/lists/oss-security/2020/07/28/2 https://lists.openwall.net/linux-kernel/2020/07/29/234 This was fixed for Fedora with the 5.7.15 stable kernel updates. This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2020:4286 https://access.redhat.com/errata/RHSA-2020:4286 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2020:4289 https://access.redhat.com/errata/RHSA-2020:4289 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-2020-14331 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2020:5023 https://access.redhat.com/errata/RHSA-2020:5023 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2020:5026 https://access.redhat.com/errata/RHSA-2020:5026 |