CVE-2020-25743

Name: CVE-2020-25743
Creator: NVD / NIST
Published: 2020-10-06T15:15:15.067+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.2/10EPSS 0.48%

Last modified Jun 17, 2026

CVE-2020-25743 is a low-severity vulnerability rated 3.2/10 on the CVSS scale. hw/ide/pci.c in QEMU before 5.1.1 can trigger a NULL pointer dereference because it lacks a pointer check before an ide_cancel_dma_sync call.. EPSS estimates a 0.48% chance of exploitation in the next 30 days.

Description

hw/ide/pci.c in QEMU before 5.1.1 can trigger a NULL pointer dereference because it lacks a pointer check before an ide_cancel_dma_sync call.

Metrics

CVSS 3.1

3.2/10

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L

EPSS Probability

0.48%

37.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Qemu	Qemu	< 5.1.1
Redhat	Openstack Platform	13.0
Redhat	Enterprise Linux	7.0
Redhat	Enterprise Linux	8.0

References

http://www.openwall.com/lists/oss-security/2020/09/29/1Mailing List, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1881409Issue Tracking, Patch, Third Party Advisory
https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg05967.htmlPatch, Third Party Advisory
https://ruhr-uni-bochum.sciebo.de/s/NNWP2GfwzYKeKwE?path=%2Fide_nullptr1bBroken Link
http://www.openwall.com/lists/oss-security/2020/09/29/1Mailing List, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1881409Issue Tracking, Patch, Third Party Advisory
https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg05967.htmlPatch, Third Party Advisory
https://ruhr-uni-bochum.sciebo.de/s/NNWP2GfwzYKeKwE?path=%2Fide_nullptr1bBroken Link

Timeline

Published: Oct 6, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-25743?

hw/ide/pci.c in QEMU before 5.1.1 can trigger a NULL pointer dereference because it lacks a pointer check before an ide_cancel_dma_sync call.

How severe is CVE-2020-25743?

CVE-2020-25743 has a CVSS score of 3.2/10 (LOW severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25743?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-25743?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST