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TI-2024-02320 Aliases CVE-2024-2494GHSA-h9fq-4hj4-g596

Libvirt: negative g_new0 length can lead to unbounded memory allocation

Priority LOW 28CWE-789Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 4 fixed, 3 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-789.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00367 30th percentileScored 2026-11-07
Fix Partial libvirt: 9.7.0Red Hat: 2 advisoriesRed Hat: 4 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
—libvirt9.0.0 to before 9.7.09.7.0Patch availableCNA
Red HatRed Hat Enterprise Linux 8—8100020240409073027.489197e6Patch availableCNA
Red HatRed Hat Enterprise Linux 8—8100020240409073027.489197e6Patch availableCNA
Red HatRed Hat Enterprise Linux 9—10.0.0-6.2.el9_4Patch availableCNA
Red HatRed Hat Enterprise Linux 6——No fix listedCNA
Red HatRed Hat Enterprise Linux 7——No fix listedCNA
Red HatRed Hat Enterprise Linux 8 Advanced Virtualization——No fix listedCNA
  • libvirt Vendor— Affected 9.0.0 to before 9.7.0 Fixed in 9.7.0 Patch available CNA
  • Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 8100020240409073027.489197e6 Patch available CNA
  • Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 8100020240409073027.489197e6 Patch available CNA
  • Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 10.0.0-6.2.el9_4 Patch available CNA
  • Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux 8 Advanced Virtualization VendorRed Hat Affected — Fixed in — No fix listed CNA

CPE names CNA · 7

CPEVersionsRoleVendor
cpe:/a:redhat:enterprise_linux:8::appstream8—Red Hat
cpe:/a:redhat:enterprise_linux:8::crb8—Red Hat
cpe:/a:redhat:enterprise_linux:9::appstream9—Red Hat
cpe:/a:redhat:enterprise_linux:9::crb9—Red Hat
cpe:/o:redhat:rhel_els:66—Red Hat
cpe:/o:redhat:rhel_els:77—Red Hat
cpe:/a:redhat:advanced_virtualization:8::el88—Red Hat
  • cpe:/a:redhat:enterprise_linux:8::appstream Versions 8 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:8::crb Versions 8 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:9::appstream Versions 9 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:9::crb Versions 9 — ·Red Hat
  • cpe:/o:redhat:rhel_els:6 Versions 6 — ·Red Hat
  • cpe:/o:redhat:rhel_els:7 Versions 7 — ·Red Hat
  • cpe:/a:redhat:advanced_virtualization:8::el8 Versions 8 — ·Red Hat

Remediation

  • Fix · CNA libvirt Fixed in 9.7.0

Red Hat 2 advisories

  • RHSA-2024:3253 Released 2024-05-22 · Red Hat rating Moderate
    virt:rhel and virt-devel:rhel security update
    • Red Hat Enterprise Linux AppStream (v. 8) SLOF-20210217-2.module+el8.10.0+20141+6faa2812.noarch::virt:rhel, SLOF-20210217-2.module+el8.10.0+20141+6faa2812.src::virt:rhel, hivex-1.3.18-23.module+el8.9.0+18724+20190c23.aarch64::virt:rhel +47
    • Red Hat Enterprise Linux CRB (v. 8) SLOF-20210217-2.module+el8.10.0+20141+6faa2812.src::virt-devel:rhel, hivex-1.3.18-23.module+el8.9.0+18724+20190c23.i686::virt-devel:rhel, hivex-devel-1.3.18-23.module+el8.9.0+18724+20190c23.i686::virt-devel:rhel +47
  • RHSA-2024:2560 Released 2024-04-30 · Red Hat rating Moderate
    libvirt security and bug fix update
    • Red Hat Enterprise Linux AppStream (v. 9) libvirt-10.0.0-6.2.el9_4, libvirt-client-10.0.0-6.2.el9_4, libvirt-client-qemu-10.0.0-6.2.el9_4 +25
    • Red Hat Enterprise Linux CRB (v. 9) libvirt-daemon-plugin-sanlock-10.0.0-6.2.el9_4, libvirt-devel-10.0.0-6.2.el9_4, libvirt-docs-10.0.0-6.2.el9_4

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 Enterprise Linux AppStream (v. 8)Fixed RHSA-2024:3253
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:2560
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2024:3253
Red Hat Enterprise Linux CRB (v. 9)Fixed RHSA-2024:2560

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-2494
  2. 2026-10-03 Alias added: GHSA-h9fq-4hj4-g596

References

Advisory 2

Other 3

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
See all 7413 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences