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TI-2023-02528 Aliases CVE-2023-2700GHSA-v972-h57q-v8pw

Memory leak in libvirt

Priority LOW 24CWE-401Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 6 fixed, 3 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-401.

Summary

A vulnerability was found in libvirt. This security flaw ouccers due to repeatedly querying an SR-IOV PCI device's capabilities that exposes a memory leak caused by a failure to free the virPCIVirtualFunction array within the parent struct's g_autoptr cleanup.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00253 16th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 6 fixed, 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—libvirtlibvirt-4.5.0—No fix listedCNA
  • libvirt Vendor— Affected libvirt-4.5.0 Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:redhat:libvirt:4.5.0:*:*:*:*:*:*:*4.5.0VulnerableRed Hat
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*38VulnerableFedoraproject
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*9.0VulnerableRed Hat
  • cpe:2.3:a:redhat:libvirt:4.5.0:*:*:*:*:*:*:* Versions 4.5.0 Vulnerable ·Red Hat
  • cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* Versions 38 Vulnerable ·Fedoraproject
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Red Hat

Remediation

Red Hat 3 advisories

  • RHSA-2023:4799 Released 2023-08-29 · Red Hat rating Moderate
    virt:rhel and virt-devel:rhel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.8.6) SLOF-20210217-1.module+el8.6.0+14480+c0a3aa0f.src::virt-devel:rhel, hivex-1.3.18-23.module+el8.6.0+14480+c0a3aa0f.i686::virt-devel:rhel, hivex-devel-1.3.18-23.module+el8.6.0+14480+c0a3aa0f.i686::virt-devel:rhel +47
    • Red Hat Enterprise Linux AppStream EUS (v.8.6) SLOF-20210217-1.module+el8.6.0+14480+c0a3aa0f.noarch::virt:rhel, SLOF-20210217-1.module+el8.6.0+14480+c0a3aa0f.src::virt:rhel, hivex-1.3.18-23.module+el8.6.0+14480+c0a3aa0f.aarch64::virt:rhel +47
  • RHSA-2023:3822 Released 2023-06-27 · Red Hat rating Moderate
    virt:rhel and virt-devel:rhel security and bug fix update
    • Red Hat Enterprise Linux AppStream (v. 8) SLOF-20210217-1.module+el8.8.0+16781+9f4724c2.noarch::virt:rhel, SLOF-20210217-1.module+el8.8.0+16781+9f4724c2.src::virt:rhel, hivex-1.3.18-23.module+el8.8.0+16781+9f4724c2.aarch64::virt:rhel +47
    • Red Hat Enterprise Linux CRB (v. 8) SLOF-20210217-1.module+el8.8.0+16781+9f4724c2.src::virt-devel:rhel, hivex-1.3.18-23.module+el8.8.0+16781+9f4724c2.i686::virt-devel:rhel, hivex-devel-1.3.18-23.module+el8.8.0+16781+9f4724c2.i686::virt-devel:rhel +47
  • RHSA-2023:3715 Released 2023-06-21 · Red Hat rating Moderate
    libvirt security update
    • Red Hat Enterprise Linux AppStream (v. 9) libvirt-9.0.0-10.2.el9_2, libvirt-client-9.0.0-10.2.el9_2, libvirt-daemon-9.0.0-10.2.el9_2 +19
    • Red Hat Enterprise Linux CRB (v. 9) libvirt-client-qemu-9.0.0-10.2.el9_2, libvirt-devel-9.0.0-10.2.el9_2, libvirt-docs-9.0.0-10.2.el9_2 +1

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 8 Advanced VirtualizationAffectedNo fix planned: Will not fix
Red Hat CodeReady Linux Builder EUS (v.8.6)Fixed RHSA-2023:4799
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2023:3822
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2023:3715
Red Hat Enterprise Linux AppStream EUS (v.8.6)Fixed RHSA-2023:4799
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2023:3822
Red Hat Enterprise Linux CRB (v. 9)Fixed RHSA-2023:3715

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-2700
  2. 2026-10-03 Alias added: GHSA-v972-h57q-v8pw

References

Patch 1

Advisory 3

Other 1

Sources

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