UBUNTU-CVE-2021-3998

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Source
https://ubuntu.com/security/CVE-2021-3998
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3998.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2021-3998
Upstream
Downstream
Related
Withdrawn
2025-07-18T16:46:31Z
Published
2022-02-01T00:00:00Z
Modified
2025-07-16T08:26:53.857803Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:22.04:LTS / glibc

Package

Name
glibc
Purl
pkg:deb/ubuntu/glibc@2.35-0ubuntu1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.35-0ubuntu1

Affected versions

2.*

2.34-0ubuntu3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "glibc-doc"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "glibc-source"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc-bin"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc-bin-dbgsym"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc-dev-bin"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc-dev-bin-dbgsym"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc-devtools"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc-devtools-dbgsym"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc6"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc6-amd64"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc6-amd64-dbgsym"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc6-dbg"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc6-dev"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc6-dev-amd64"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc6-dev-i386"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc6-dev-s390"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc6-dev-x32"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc6-i386"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc6-i386-dbgsym"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc6-prof"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc6-s390"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc6-s390-dbgsym"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc6-x32"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "libc6-x32-dbgsym"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "locales"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "locales-all"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "nscd"
        },
        {
            "binary_version": "2.35-0ubuntu1",
            "binary_name": "nscd-dbgsym"
        }
    ],
    "availability": "No subscription required"
}