CVE-2023-4135 Out-of-bounds read information disclosure vulnerability

What is CVE-2023-4135?

CVE-2023-4135 is a medium-severity vulnerability in Fedoraproject Fedora, published on 4 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-125

Which versions are affected by CVE-2023-4135?

It affects 2 products.

Products include Fedoraproject Fedora, Qemu Qemu.

How do I fix CVE-2023-4135?

Apply the vendor's patch.

Is CVE-2023-4135 being exploited?

There is no known exploitation of CVE-2023-4135 in the wild and no public exploit code.

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• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2023-4135, DEBIAN-CVE-2023-4135, GHSA-fw85-m9vg-m8jv.