CVE-2026-18917

CVE.org · Published

Record status: Published
Identifier year (not publication year): 2026
Source publication: Aug 20, 2026
Source updated: Oct 5, 2026
Imported by cveboard: Oct 24, 2026
Source snapshot: cve_2026-10-24_midnight_baseline · Oct 24, 2026

CNA source text (English)

Libvirt: integer overflow in nodegetfreepages rpc handler leading to heap buffer overflow

A flaw was found in libvirt. An unprivileged local user could exploit an integer overflow vulnerability in the NodeGetFreePages RPC handler. This flaw allows crafted values to bypass a size check, leading to an undersized memory buffer. Subsequently, real NUMA node data can overwrite this buffer. This heap buffer overflow can corrupt the root libvirt daemon's memory, potentially leading to a denial of service or local privilege escalation.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

Red Hat Enterprise Linux 10

Vendor: Red Hat
Product: Red Hat Enterprise Linux 10
Platforms: Unknown
Default status: affected
Package: libvirt
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 10 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:11.10.0-12.9.el10_2	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 10.0 Extended Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 10.0 Extended Update Support
Platforms: Unknown
Default status: affected
Package: libvirt
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 10.0 Extended Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:10.10.0-8.12.el10_0	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 7 Extended Lifecycle Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 7 Extended Lifecycle Support
Platforms: Unknown
Default status: affected
Package: libvirt
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 7 Extended Lifecycle Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:4.5.0-36.el7_9.7	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Platforms: Unknown
Default status: affected
Package: virt:rhel
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
8040020260916092751.522a0ee4	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
Platforms: Unknown
Default status: affected
Package: virt:rhel
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
8040020260916092751.522a0ee4	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Platforms: Unknown
Default status: affected
Package: virt:rhel
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
8060020260910092451.ad008a3a	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
Platforms: Unknown
Default status: affected
Package: virt:rhel
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
8060020260910092451.ad008a3a	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Platforms: Unknown
Default status: affected
Package: virt:rhel
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.8 Telecommunications Update Service · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
8080020260910092120.63b34585	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Platforms: Unknown
Default status: affected
Package: virt:rhel
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
8080020260910092120.63b34585	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9
Platforms: Unknown
Default status: affected
Package: libvirt
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:11.10.0-12.7.el9_8	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Platforms: Unknown
Default status: affected
Package: libvirt
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:9.0.0-10.17.el9_2	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
Platforms: Unknown
Default status: affected
Package: libvirt
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:10.0.0-6.24.el9_4	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9.6 Extended Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9.6 Extended Update Support
Platforms: Unknown
Default status: affected
Package: libvirt
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9.6 Extended Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:10.10.0-7.19.el9_6	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 6

Vendor: Red Hat
Product: Red Hat Enterprise Linux 6
Platforms: Unknown
Default status: unaffected
Package: libvirt
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat Enterprise Linux 8

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8
Platforms: Unknown
Default status: affected
Package: virt:rhel/libvirt
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat Enterprise Linux for NVIDIA 26

Vendor: Red Hat
Product: Red Hat Enterprise Linux for NVIDIA 26
Platforms: Unknown
Default status: unknown
Package: libvirt
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.