Bug 2020588 (CVE-2021-3930)
| Summary: | CVE-2021-3930 QEMU: off-by-one error in mode_sense_page() in hw/scsi/scsi-disk.c | ||
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| Product: | [Other] Security Response | Reporter: | Mauro Matteo Cascella <mcascell> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | unspecified | CC: | berrange, carnil, cfergeau, crobinso, dbecker, ehadley, jen, jferlan, jforbes, jjoyce, jmaloy, jschluet, knoel, lhh, lkundrak, lpeer, m.a.young, mburns, mkenneth, mrezanin, mst, ondrejj, pbonzini, philmd, ribarry, rjones, sclewis, slinaber, virt-maint, virt-maint |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | qemu-kvm 6.2.0-rc0 | Doc Type: | If docs needed, set a value |
| Doc Text: |
An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2022-01-11 17:00:42 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: | 2020599, 2020598, 2020720, 2020721, 2020722, 2020723, 2025605, 2025607, 2025608 | ||
| Bug Blocks: | 2020383 | ||
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Description
Mauro Matteo Cascella
2021-11-05 10:33:08 UTC
Created qemu tracking bugs for this issue: Affects: epel-7 [bug 2020599] Affects: fedora-all [bug 2020598] I don't have access to bug 2020383, but from comment #0 the fix is likely: https://www.mail-archive.com/qemu-devel@nongnu.org/msg779652.html (In reply to Philippe Mathieu-Daudé from comment #2) > I don't have access to bug 2020383, but from comment #0 the fix is likely: > https://www.mail-archive.com/qemu-devel@nongnu.org/msg779652.html That looks correct, because https://bugs.launchpad.net/qemu/+bug/1914638 is referenced which moved to https://gitlab.com/qemu-project/qemu/-/issues/546 and there Paolo mentioned the CVE assignment in https://gitlab.com/qemu-project/qemu/-/issues/546#note_725175813 This patch was eventually pulled and merged: https://lists.nongnu.org/archive/html/qemu-devel/2021-11/msg01896.html. Upstream commit: https://gitlab.com/qemu-project/qemu/-/commit/b3af7fdf9cc537f8f0dd3e2423d83f5c99a457e8 This issue has been addressed in the following products: Advanced Virtualization for RHEL 8.4.0.EUS Via RHSA-2021:5065 https://access.redhat.com/errata/RHSA-2021:5065 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2021:5238 https://access.redhat.com/errata/RHSA-2021:5238 This issue has been addressed in the following products: Advanced Virtualization for RHEL 8.5.0.Z Via RHSA-2022:0081 https://access.redhat.com/errata/RHSA-2022:0081 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-2021-3930 |