UBUNTU-CVE-2021-38604

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Source
https://ubuntu.com/security/CVE-2021-38604
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-38604.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-38604
Upstream
Withdrawn
2025-07-18T16:46:57Z
Published
2021-08-12T16:15:00Z
Modified
2025-07-16T07:43:05.950191Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

In librt in the GNU C Library (aka glibc) through 2.34, sysdeps/unix/sysv/linux/mqnotify.c mishandles certain NOTIFYREMOVED data, leading to a NULL pointer dereference. NOTE: this vulnerability was introduced as a side effect of the CVE-2021-33574 fix.

References

Affected packages

Ubuntu:22.04:LTS / glibc

Package

Name
glibc
Purl
pkg:deb/ubuntu/glibc@2.34-0ubuntu3?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.34-0ubuntu3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "glibc-doc",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "glibc-source",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc-bin",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc-bin-dbgsym",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc-dev-bin-dbgsym",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc-devtools",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc-devtools-dbgsym",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc6",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc6-amd64",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc6-amd64-dbgsym",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc6-dbg",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc6-dev",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc6-dev-s390",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc6-i386",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc6-i386-dbgsym",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc6-prof",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc6-s390",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc6-s390-dbgsym",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc6-x32",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "libc6-x32-dbgsym",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "locales",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "locales-all",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "nscd",
            "binary_version": "2.34-0ubuntu3"
        },
        {
            "binary_name": "nscd-dbgsym",
            "binary_version": "2.34-0ubuntu3"
        }
    ]
}