Uncontrolled Memory Allocation Affecting qemu-kvm-block-iscsi package, versions <15:6.2.0-49.module+el8.10.0+90330+d0258130


Severity

Recommended
medium

Based on Oracle Linux security rating

    Threat Intelligence

    EPSS
    0.06% (28th percentile)

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  • Snyk ID SNYK-ORACLE8-QEMUKVMBLOCKISCSI-7174929
  • published 2 Jun 2024
  • disclosed 21 Mar 2024

How to fix?

Upgrade Oracle:8 qemu-kvm-block-iscsi to version 15:6.2.0-49.module+el8.10.0+90330+d0258130 or higher.
This issue was patched in ELSA-2024-3253.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-kvm-block-iscsi package and not the qemu-kvm-block-iscsi package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

A flaw was found in the RPC library APIs of libvirt. The RPC server deserialization code allocates memory for arrays before the non-negative length check is performed by the C API entry points. Passing a negative length to the g_new0 function results in a crash due to the negative length being treated as a huge positive number. This flaw allows a local, unprivileged user to perform a denial of service attack by causing the libvirt daemon to crash.

CVSS Scores

version 3.1
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SUSE

5.5 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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Red Hat

6.2 medium