CVE-2023-4135

Out-of-bounds read information disclosure vulnerability

MEDIUM
6.5
CVSS Score
Published: August 4, 2023 at 01:19 PM UTC
Updated: June 17, 2026 at 06:37 AM UTC
2 products affected across 2 vendorsFedoraQEMU

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.4%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

8.0.0 ≤ v < 8.1.08.1.0 rc08.1.0 rc18.1.0 rc2
Vendor states this is fixed in 8.1.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

VDB Entryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/security/cve/CVE-2023-4135
Issue Trackingx_refsource_REDHATPatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2229101

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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