CVE-2023-4911

CVE.org · Published

Record status: Published
Identifier year (not publication year): 2023
Source publication: Oct 3, 2023
Source updated: Oct 14, 2026
Imported by cveboard: Oct 24, 2026
Source snapshot: cve_2026-10-24_midnight_baseline · Oct 24, 2026

CNA source text (English)

Glibc: buffer overflow in ld.so leading to privilege escalation

A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.

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.

glibc

Vendor: Unknown
Product: Unknown
Platforms: Unknown
Default status: unaffected
Package: glibc
Package collection: https://sourceware.org/git/glibc.git

glibc · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
2.34	`affected`	custom	2.39	Unavailable	None listed

Red Hat Enterprise Linux 8

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

Red Hat Enterprise Linux 8 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:2.28-225.el8_8.6	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8

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

Red Hat Enterprise Linux 8 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:2.28-225.el8_8.6	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.6 Extended Update Support

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

Red Hat Enterprise Linux 8.6 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)
0:2.28-189.6.el8_6	`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: glibc
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)
0:2.34-60.el9_2.7	`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: glibc
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)
0:2.34-60.el9_2.7	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9.0 Extended Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9.0 Extended Update Support
Platforms: Unknown
Default status: affected
Package: glibc
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9.0 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)
0:2.34-28.el9_0.4	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Virtualization 4 for Red Hat Enterprise Linux 8

Vendor: Red Hat
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 8
Platforms: Unknown
Default status: affected
Package: glibc
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:2.28-189.6.el8_6	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Virtualization 4 for Red Hat Enterprise Linux 8

Vendor: Red Hat
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 8
Platforms: Unknown
Default status: affected
Package: redhat-release-virtualization-host
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:4.5.3-10.el8ev	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Virtualization 4 for Red Hat Enterprise Linux 8

Vendor: Red Hat
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 8
Platforms: Unknown
Default status: affected
Package: redhat-virtualization-host
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:4.5.3-202312060823_8.6	`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: glibc
Package collection: https://access.redhat.com/downloads/content/package-browser/

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

Red Hat Enterprise Linux 7

Vendor: Red Hat
Product: Red Hat Enterprise Linux 7
Platforms: Unknown
Default status: unaffected
Package: compat-glibc
Package collection: https://access.redhat.com/downloads/content/package-browser/

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

Red Hat Enterprise Linux 7

Vendor: Red Hat
Product: Red Hat Enterprise Linux 7
Platforms: Unknown
Default status: unaffected
Package: glibc
Package collection: https://access.redhat.com/downloads/content/package-browser/

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