An integer overflow was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs…

Description

An integer overflow was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a "PVRDMA_REG_DSRHIGH" write from the guest due to improper input validation. This flaw allows a privileged guest user to make QEMU allocate a large amount of memory, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Scores

EPSS (exploitation in 30 days)

0.30% · top 77% of all CVEs (6 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.0.

Weakness

• CWE-190->CWE-770->(CWE-125|CWE-476) (opens in a new tab)All about CWE-190 and its CVEs

Affected products

• QEMU

  • affected qemu-kvm 6.1.0

References (5)

• https://bugzilla.redhat.com/show_bug.cgi?id=1973349 (opens in a new tab)x_refsource_MISCx_transferred
• https://lists.gnu.org/archive/html/qemu-devel/2021-06/msg07925.html (opens in a new tab)x_refsource_MISCx_transferred
• https://security.netapp.com/advisory/ntap-20220318-0002/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• GLSA-202208-27 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• [debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2021-3607](https://trackcve.app/badge/CVE-2021-3607.svg)](https://trackcve.app/cve/CVE-2021-3607)

Record last updated 3 Aug 2024, 17:01 UTC.