CVE-2023-4135

Out-of-bounds read information disclosure vulnerability

Description

A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU. The QEMU process does not validate an offset provided by the guest before computing a host heap pointer, which is used for copying data back to the guest. Arbitrary heap memory relative to an allocated buffer can be disclosed.

Category

6.0
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Third-Party Advisory redhat.com Third-Party Advisory redhat.com Third-Party Advisory netapp.com Third-Party Advisory zerodayinitiative.com
Affected: n/a qemu-kvm
Affected: Red Hat Red Hat Enterprise Linux 6
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 8 Advanced Virtualization
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Fedora Fedora
Affected: Fedora Extra Packages for Enterprise Linux
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/security/cve/CVE-2023-4135 third party advisory vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2229101 patch third party advisory issue tracking
https://security.netapp.com/advisory/ntap-20230915-0012/ third party advisory
https://www.zerodayinitiative.com/advisories/ZDI-CAN-21521 broken link third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2023-4135?
CVE-2023-4135 has been scored as a medium severity vulnerability.
How to fix CVE-2023-4135?
To fix CVE-2023-4135, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-4135 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-4135 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-4135?
CVE-2023-4135 affects n/a qemu-kvm, Red Hat Red Hat Enterprise Linux 6, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 8 Advanced Virtualization, Red Hat Red Hat Enterprise Linux 9, Fedora Fedora, Fedora Extra Packages for Enterprise Linux.
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