Bug 2254580 (CVE-2023-6693)
Summary: | CVE-2023-6693 QEMU: virtio-net: stack buffer overflow in virtio_net_flush_tx() | ||
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Product: | [Other] Security Response | Reporter: | Mauro Matteo Cascella <mcascell> |
Component: | vulnerability | Assignee: | Product Security <prodsec-ir-bot> |
Status: | NEW --- | QA Contact: | |
Severity: | medium | Docs Contact: | |
Priority: | medium | ||
Version: | unspecified | CC: | ddepaula, jen, jferlan, jmaloy, knoel, mrezanin, mst, pbonzini, security-response-team, virt-maint, ymankad |
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 stack based buffer overflow was found in the virtio-net device of QEMU. This issue occurs when flushing TX in the virtio_net_flush_tx function if guest features VIRTIO_NET_F_HASH_REPORT, VIRTIO_F_VERSION_1 and VIRTIO_NET_F_MRG_RXBUF are enabled. This could allow a malicious user to overwrite local variables allocated on the stack. Specifically, the `out_sg` variable could be used to read a part of process memory and send it to the wire, causing an information leak.
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Story Points: | --- |
Clone Of: | Environment: | ||
Last Closed: | 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: | 2256436 | ||
Bug Blocks: | 2254047 |
Description
Mauro Matteo Cascella
2023-12-14 16:55:45 UTC
Created qemu tracking bugs for this issue: Affects: fedora-all [bug 2256436] Upstream patch & commit: https://lists.nongnu.org/archive/html/qemu-devel/2024-01/msg00045.html https://gitlab.com/qemu-project/qemu/-/commit/2220e8189fb94068dbad333228659fbac819abb0 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2024:2962 https://access.redhat.com/errata/RHSA-2024:2962 This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2025:4492 https://access.redhat.com/errata/RHSA-2025:4492 |