Vulnerability CVE-2023-6693: Information
Description
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.
Severity: MEDIUM (5.3) Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Fixed packages
Package name | Branch | Fixed in version | Version from repository | Errata ID | Task # | State |
|---|---|---|---|---|---|---|
| qemu | sisyphus | 8.2.0-alt1 | 8.2.3-alt1 | ALT-PU-2024-1248-2 | 337487 | Fixed |
| qemu | sisyphus_loongarch64 | 8.2.0-alt0.0.port | 8.2.3-alt1 | ALT-PU-2024-1781-1 | - | Fixed |
| qemu | p10 | 8.2.2-alt0.p10 | 8.2.2-alt0.p10.1 | ALT-PU-2024-6235-3 | 344683 | Fixed |
| qemu | c10f1 | 8.2.2-alt0.p10.1 | 8.2.2-alt0.p10.1 | ALT-PU-2024-7201-3 | 345913 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
|---|---|
| https://access.redhat.com/security/cve/CVE-2023-6693 |
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| RHBZ#2254580 |
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| https://security.netapp.com/advisory/ntap-20240208-0004/ |
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| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OYGUN5HVOXESW7MSNM44E4AE2VNXQB6Y/ |
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