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CVE-2023-6693

CVE-2023-6693 · Qemu: virtio-net: stack buffer overflow in virtio_net_flush_tx()

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 4.9 · Medium · EPSS 0.3% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • red hat enterprise linux 8

    Versions
    • ≥ 8100020240314161907.e155f54d: Not affected (rpm)

    No fix published

  • red hat enterprise linux 9

    Versions
    • ≥ 17:9.0.0-10.el9_5.3: Not affected (rpm)

    No fix published

  • red hat enterprise linux 6

    No fix published

  • red hat enterprise linux 7

    No fix published

  • red hat enterprise linux 8 advanced virtualization

    No fix published

  • qemu Debian:12

    Versions
    • 1:7.2+dfsg-7
    • 1:7.2+dfsg-7+deb12u1
    • 1:7.2+dfsg-7+deb12u2
    • 1:7.2+dfsg-7+deb12u2~bpo11+1
    • 1:7.2+dfsg-7+deb12u3
    Affected ranges
    • ECOSYSTEM: < 1:7.2+dfsg-7+deb12u4

    Update to 1:7.2+dfsg-7+deb12u4

  • qemu Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:8.2.0+ds-3

    Update to 1:8.2.0+ds-3

  • qemu Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:8.2.0+ds-3

    Update to 1:8.2.0+ds-3

  • qemu Ubuntu:22.04:LTS

    Versions
    • 1:6.0+dfsg-2expubuntu1
    • 1:6.0+dfsg-2expubuntu2
    • 1:6.0+dfsg-2expubuntu4
    • 1:6.2+dfsg-2ubuntu5
    • 1:6.2+dfsg-2ubuntu6
    • 1:6.2+dfsg-2ubuntu6.1
    • 1:6.2+dfsg-2ubuntu6.2
    • 1:6.2+dfsg-2ubuntu6.3
    • 1:6.2+dfsg-2ubuntu6.4
    • 1:6.2+dfsg-2ubuntu6.5
    • 1:6.2+dfsg-2ubuntu6.6
    • 1:6.2+dfsg-2ubuntu6.7
    • 1:6.2+dfsg-2ubuntu6.8
    • 1:6.2+dfsg-2ubuntu6.9
    • 1:6.2+dfsg-2ubuntu6.10
    • 1:6.2+dfsg-2ubuntu6.11
    • 1:6.2+dfsg-2ubuntu6.12
    • 1:6.2+dfsg-2ubuntu6.13
    • 1:6.2+dfsg-2ubuntu6.14
    • 1:6.2+dfsg-2ubuntu6.15
    • 1:6.2+dfsg-2ubuntu6.16
    • 1:6.2+dfsg-2ubuntu6.17
    • 1:6.2+dfsg-2ubuntu6.18
    • 1:6.2+dfsg-2ubuntu6.19
    • 1:6.2+dfsg-2ubuntu6.21
    Affected ranges
    • ECOSYSTEM: < 1:6.2+dfsg-2ubuntu6.22

    Update to 1:6.2+dfsg-2ubuntu6.22

Original sources

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