CVSS 3.1
5.3 mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:LCVE-2023-6693
Medium (5.3). EPSS 0.3% chance of exploitation in the next 30 days.
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
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 26% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-787, CWE-121
- Published
- Modified
- Record from
- the NVD, synced
Affected
- fedoraproject:fedora
- qemu:qemu
- redhat:enterprise_linux