DEBIAN-CVE-2023-6693
Record from OSV · Published January 2, 2024
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.
Fixed versions
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| Package | Ecosystem | Fixed in |
|---|---|---|
| qemu | Debian:13 | 1:8.2.0+ds-3 |
| qemu | Debian:12 | 1:7.2+dfsg-7+deb12u4 |
| qemu | Debian:14 | 1:8.2.0+ds-3 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | qemu | 0 |
| Debian:12 | qemu | 0, 1:7.2+dfsg-7, 1:7.2+dfsg-7+deb12u1 |
| Debian:14 | qemu | 0 |
Timeline
- Jan 2, 2024 CVE Published
- Oct 26, 2026 CVE Updated
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