What’s Vulnerable › Vulnerabilities

CVE-2018-20124

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-12-20 · updated 2026-06-17
• Weakness: CWE-125

Description

hw/rdma/rdma_backend.c in QEMU allows guest OS users to trigger out-of-bounds access via a PvrdmaSqWqe ring element with a large num_sge value.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 18.10
• QEMU: through 3.1.0

References

• http://www.openwall.com/lists/oss-security/2018/12/18/2
• http://www.securityfocus.com/bid/106290
• https://lists.gnu.org/archive/html/qemu-devel/2018-12/msg02822.html
• https://usn.ubuntu.com/3923-1/
• http://www.openwall.com/lists/oss-security/2018/12/18/2
• http://www.securityfocus.com/bid/106290
• https://lists.gnu.org/archive/html/qemu-devel/2018-12/msg02822.html
• https://usn.ubuntu.com/3923-1/

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