CVE-2018-20125 — NULL Pointer Dereference in Qemu

CWE-476 — NULL Pointer DereferenceCWE-772 — Missing Release of Resource after Effective Lifetime9 documents7 sources
Severity
7.5HIGHNVD
OSV7.8
EPSS
0.5%
top 34.02%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
QemuDebian QemuCanonical Ubuntu Linux
Timeline
PublishedDec 20
Latest updateMay 13

Description

hw/rdma/vmw/pvrdma_cmd.c in QEMU allows attackers to cause a denial of service (NULL pointer dereference or excessive memory allocation) in create_cq_ring or create_qp_rings.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages4 packages

▶debiandebian/qemu< qemu 1:4.1-1 (bookworm)
▶Debianqemu/qemu< 1:4.1-1+3
▶Ubuntuqemu/qemu< 2.0.0+dfsg-2ubuntu1.45+2
▶NVDqemu/qemu3.1.0

Also affects: Ubuntu Linux 14.04, 16.04, 18.04, 18.10

Patches

Patch: www.openwall.com ↗Patch: lists.gnu.org ↗Patch: www.openwall.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-79gj-8p4x-8fqf: hw/rdma/vmw/pvrdma_cmd↗2022-05-13
▶
OSV
qemu vulnerabilities↗2019-03-27
▶
OSV
CVE-2018-20125: hw/rdma/vmw/pvrdma_cmd↗2018-12-20
▶

📋Vendor Advisories

3
Ubuntu
QEMU vulnerabilities↗2019-03-27
▶
Red Hat
QEMU: pvrdma: null dereference or excessive memory allocation when creating QP/CQ↗2018-12-11
▶
Debian
CVE-2018-20125: qemu - hw/rdma/vmw/pvrdma_cmd.c in QEMU allows attackers to cause a denial of service (...↗2018
▶

💬Community

2
Bugzilla
CVE-2018-20125 qemu: pvrdma: null dereference or unbounded memory allocation when creating QP/CQ [fedora-all]↗2018-12-19
▶
Bugzilla
CVE-2018-20125 QEMU: pvrdma: null dereference or excessive memory allocation when creating QP/CQ↗2018-12-19
▶