What’s Vulnerable › Vulnerabilities

CVE-2023-3019: Qemu: e1000e: heap use-after-free in e1000e_write_packet_to_guest()

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-07-24 · updated 2026-06-17
• Weakness: CWE-416

Description

A DMA reentrancy issue leading to a use-after-free error was found in the e1000e NIC emulation code in QEMU. This issue could allow a privileged guest user to crash the QEMU process on the host, resulting in a denial of service.

Affected products

• QEMU: before 8.2.0 — fixed in 8.2.0
• Red Hat Enterprise Linux: 8.0, 9.0

How to fix

Upgrade to a fixed version: QEMU 8.2.0. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHSA-2024:0135
• https://access.redhat.com/errata/RHSA-2024:0404
• https://access.redhat.com/errata/RHSA-2024:0569
• https://access.redhat.com/errata/RHSA-2024:2135
• https://access.redhat.com/security/cve/CVE-2023-3019
• https://bugzilla.redhat.com/show_bug.cgi?id=2222351
• https://access.redhat.com/errata/RHSA-2024:0135
• https://access.redhat.com/errata/RHSA-2024:0404
• https://access.redhat.com/errata/RHSA-2024:0569
• https://access.redhat.com/errata/RHSA-2024:2135
• https://access.redhat.com/security/cve/CVE-2023-3019
• https://bugzilla.redhat.com/show_bug.cgi?id=2222351

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