CVE catalog

CVE-2021-3998

glibc: CVE-2021-3998

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Published: Jan 24, 2022, 11:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 2.20% · Oct 22, 2026

A flaw was found in glibc. The realpath() function can mistakenly return an unexpected value, potentially leading to information leakage and disclosure of sensitive data.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	glibc	sid	`2.43-7`	fixed
Debian	glibc	forky	`2.43-7`	fixed
Debian	glibc	trixie	`2.41-12+deb13u4`	fixed
Debian	glibc	bookworm	`2.36-9+deb12u14`	fixed
Debian	glibc	bookworm-security	`2.36-9+deb12u7`	fixed
Cpe	glibc	Not reported	`2.35`	fixed
Cpe	ontap_select_deploy_administration_utility	Not reported	Not reported	unknown
Cpe	h300s_firmware	Not reported	Not reported	unknown
Cpe	h500s_firmware	Not reported	Not reported	unknown
Cpe	h700s_firmware	Not reported	Not reported	unknown
Cpe	h410s_firmware	Not reported	Not reported	unknown
Cpe	h410c_firmware	Not reported	Not reported	unknown
Opensuse	glibc	tumbleweed	`2.35-1.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	glibc	source	sid	`2.33-4`	not yet assigned	Not reported	Not reported
Debian	glibc	source	forky	`2.33-4`	not yet assigned	Not reported	Not reported
Debian	glibc	source	trixie	`2.33-4`	not yet assigned	Not reported	Not reported
Debian	glibc	source	bookworm	`2.33-4`	not yet assigned	Not reported	Not reported
Cpe	glibc	cpe	Not reported	`2.35`	Not reported	NVD-CVE-2021-3998	Not reported
Opensuse	glibc	rpm	tumbleweed	`2.35-1.1`	Not reported	OPENSUSE-SU-2024:11850-1	Not reported

OpenFactory catalog packages

[openSUSE Tumbleweed]

[glibc-32bit]Unknown
Source package: [glibc]
Details (1)
- 2.43-4.3 · x86_64 · tumbleweed
  Unknown · Fixed: 2.35-1.1
  Version impact unknown
  dsa · glibc · opensuse · tumbleweed
[glibc-devel]Unknown
Source package: [glibc]
Details (1)
- 2.43-4.3 · x86_64 · tumbleweed
  Unknown · Fixed: 2.35-1.1
  Version impact unknown
  dsa · glibc · opensuse · tumbleweed
[glibc-devel-32bit]Unknown
Source package: [glibc]
Details (1)
- 2.43-4.3 · x86_64 · tumbleweed
  Unknown · Fixed: 2.35-1.1
  Version impact unknown
  dsa · glibc · opensuse · tumbleweed
[glibc-devel-static]Unknown
Source package: [glibc]
Details (1)
- 2.43-4.3 · x86_64 · tumbleweed
  Unknown · Fixed: 2.35-1.1
  Version impact unknown
  dsa · glibc · opensuse · tumbleweed
[glibc-devel-static-32bit]Unknown
Source package: [glibc]
Details (1)
- 2.43-4.3 · x86_64 · tumbleweed
  Unknown · Fixed: 2.35-1.1
  Version impact unknown
  dsa · glibc · opensuse · tumbleweed
[glibc-extra]Unknown
Source package: [glibc]
Details (1)
- 2.43-4.3 · x86_64 · tumbleweed
  Unknown · Fixed: 2.35-1.1
  Version impact unknown
  dsa · glibc · opensuse · tumbleweed
[glibc-gconv-modules-extra]Unknown
Source package: [glibc]
Details (1)
- 2.43-4.3 · x86_64 · tumbleweed
  Unknown · Fixed: 2.35-1.1
  Version impact unknown
  dsa · glibc · opensuse · tumbleweed
[glibc-gconv-modules-extra-32bit]Unknown
Source package: [glibc]
Details (1)
- 2.43-4.3 · x86_64 · tumbleweed
  Unknown · Fixed: 2.35-1.1
  Version impact unknown
  dsa · glibc · opensuse · tumbleweed
[glibc-html]Unknown
Source package: [glibc]
Details (1)
- 2.43-4.3 · noarch · tumbleweed
  Unknown · Fixed: 2.35-1.1
  Version impact unknown
  dsa · glibc · opensuse · tumbleweed
[glibc-i18ndata]Unknown
Source package: [glibc]
Details (1)
- 2.43-4.3 · noarch · tumbleweed
  Unknown · Fixed: 2.35-1.1
  Version impact unknown
  dsa · glibc · opensuse · tumbleweed
[glibc-info]Unknown
Source package: [glibc]
Details (1)
- 2.43-4.3 · noarch · tumbleweed
  Unknown · Fixed: 2.35-1.1
  Version impact unknown
  dsa · glibc · opensuse · tumbleweed
[glibc-lang]Unknown
Source package: [glibc]
Details (1)
- 2.43-4.3 · noarch · tumbleweed
  Unknown · Fixed: 2.35-1.1
  Version impact unknown
  dsa · glibc · opensuse · tumbleweed
[glibc-locale]Unknown
Source package: [glibc]
Details (1)
- 2.43-4.3 · x86_64 · tumbleweed
  Unknown · Fixed: 2.35-1.1
  Version impact unknown
  dsa · glibc · opensuse · tumbleweed
[glibc-locale-base]Unknown
Source package: [glibc]
Details (1)
- 2.43-4.3 · x86_64 · tumbleweed
  Unknown · Fixed: 2.35-1.1
  Version impact unknown
  dsa · glibc · opensuse · tumbleweed
[glibc-profile]Unknown
Source package: [glibc]
Details (1)
- 2.43-4.3 · x86_64 · tumbleweed
  Unknown · Fixed: 2.35-1.1
  Version impact unknown
  dsa · glibc · opensuse · tumbleweed
[glibc-profile-32bit]Unknown
Source package: [glibc]
Details (1)
- 2.43-4.3 · x86_64 · tumbleweed
  Unknown · Fixed: 2.35-1.1
  Version impact unknown
  dsa · glibc · opensuse · tumbleweed

[Debian 12 (Bookworm)]

[glibc-doc]Fixed
Source package: [glibc]
Details (4)
- 2.36-9+deb12u14 · all · bookworm
  Fixed · Fixed: 2.33-4
  dsa · glibc · debian · bookworm
- 2.36-9+deb12u14 · all · bookworm
  Fixed · Fixed: 2.33-4
  dsa · glibc · debian · bookworm
- 2.36-9+deb12u7 · all · bookworm-security
  Fixed · Fixed: 2.33-4
  dsa · glibc · debian · bookworm
- 2.36-9+deb12u7 · all · bookworm-security
  Fixed · Fixed: 2.33-4
  dsa · glibc · debian · bookworm
[glibc-source]Fixed
Source package: [glibc]
Details (4)
- 2.36-9+deb12u14 · all · bookworm
  Fixed · Fixed: 2.33-4
  dsa · glibc · debian · bookworm
- 2.36-9+deb12u14 · all · bookworm
  Fixed · Fixed: 2.33-4
  dsa · glibc · debian · bookworm
- 2.36-9+deb12u7 · all · bookworm-security
  Fixed · Fixed: 2.33-4
  dsa · glibc · debian · bookworm
- 2.36-9+deb12u7 · all · bookworm-security
  Fixed · Fixed: 2.33-4
  dsa · glibc · debian · bookworm
[libc6]Fixed
Source package: [glibc]
Details (4)
- 2.36-9+deb12u14 · amd64 · bookworm
  Fixed · Fixed: 2.33-4
  dsa · glibc · debian · bookworm
- 2.36-9+deb12u14 · arm64 · bookworm
  Fixed · Fixed: 2.33-4
  dsa · glibc · debian · bookworm
- 2.36-9+deb12u7 · amd64 · bookworm-security
  Fixed · Fixed: 2.33-4
  dsa · glibc · debian · bookworm
- 2.36-9+deb12u7 · arm64 · bookworm-security
  Fixed · Fixed: 2.33-4
  dsa · glibc · debian · bookworm
[libc6-dbg]Fixed
Source package: [glibc]
Details (4)
- 2.36-9+deb12u14 · amd64 · bookworm
  Fixed · Fixed: 2.33-4
  dsa · glibc · debian · bookworm
- 2.36-9+deb12u14 · arm64 · bookworm
  Fixed · Fixed: 2.33-4
  dsa · glibc · debian · bookworm
- 2.36-9+deb12u7 · amd64 · bookworm-security
  Fixed · Fixed: 2.33-4
  dsa · glibc · debian · bookworm
- 2.36-9+deb12u7 · arm64 · bookworm-security
  Fixed · Fixed: 2.33-4
  dsa · glibc · debian · bookworm

Next results

Observed: Oct 23, 2026, 6:02:20 PM UTC

References

[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]