UBUNTU-CVE-2022-2526

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Source
https://ubuntu.com/security/CVE-2022-2526
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-2526.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2022-2526
Upstream
Downstream
Related
Published
2022-08-24T00:00:00Z
Modified
2025-09-08T16:49:37Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A use-after-free vulnerability was found in systemd. This issue occurs due to the onstreamio() function and dnsstreamcomplete() function in 'resolved-dns-stream.c' not incrementing the reference counting for the DnsStream object. Therefore, other functions and callbacks called can dereference the DNSStream object, causing the use-after-free when the reference is still used later.

References

Affected packages

Ubuntu:18.04:LTS / systemd

Package

Name
systemd
Purl
pkg:deb/ubuntu/systemd@237-3ubuntu10.56?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
237-3ubuntu10.56

Affected versions

Other

234-2ubuntu12
235-2ubuntu3
235-3ubuntu2
235-3ubuntu3
237-3ubuntu3
237-3ubuntu4
237-3ubuntu6
237-3ubuntu7
237-3ubuntu8
237-3ubuntu10

237-3ubuntu10.*

237-3ubuntu10.2
237-3ubuntu10.3
237-3ubuntu10.4
237-3ubuntu10.6
237-3ubuntu10.9
237-3ubuntu10.11
237-3ubuntu10.12
237-3ubuntu10.13
237-3ubuntu10.15
237-3ubuntu10.17
237-3ubuntu10.19
237-3ubuntu10.20
237-3ubuntu10.21
237-3ubuntu10.22
237-3ubuntu10.23
237-3ubuntu10.24
237-3ubuntu10.25
237-3ubuntu10.26
237-3ubuntu10.28
237-3ubuntu10.29
237-3ubuntu10.31
237-3ubuntu10.33
237-3ubuntu10.38
237-3ubuntu10.39
237-3ubuntu10.40
237-3ubuntu10.41
237-3ubuntu10.42
237-3ubuntu10.43
237-3ubuntu10.44
237-3ubuntu10.45
237-3ubuntu10.46
237-3ubuntu10.47
237-3ubuntu10.48
237-3ubuntu10.49
237-3ubuntu10.50
237-3ubuntu10.51
237-3ubuntu10.52
237-3ubuntu10.53
237-3ubuntu10.54

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libnss-myhostname",
            "binary_version": "237-3ubuntu10.56"
        },
        {
            "binary_name": "libnss-mymachines",
            "binary_version": "237-3ubuntu10.56"
        },
        {
            "binary_name": "libnss-resolve",
            "binary_version": "237-3ubuntu10.56"
        },
        {
            "binary_name": "libnss-systemd",
            "binary_version": "237-3ubuntu10.56"
        },
        {
            "binary_name": "libpam-systemd",
            "binary_version": "237-3ubuntu10.56"
        },
        {
            "binary_name": "libsystemd-dev",
            "binary_version": "237-3ubuntu10.56"
        },
        {
            "binary_name": "libsystemd0",
            "binary_version": "237-3ubuntu10.56"
        },
        {
            "binary_name": "libudev-dev",
            "binary_version": "237-3ubuntu10.56"
        },
        {
            "binary_name": "libudev1",
            "binary_version": "237-3ubuntu10.56"
        },
        {
            "binary_name": "systemd",
            "binary_version": "237-3ubuntu10.56"
        },
        {
            "binary_name": "systemd-container",
            "binary_version": "237-3ubuntu10.56"
        },
        {
            "binary_name": "systemd-coredump",
            "binary_version": "237-3ubuntu10.56"
        },
        {
            "binary_name": "systemd-journal-remote",
            "binary_version": "237-3ubuntu10.56"
        },
        {
            "binary_name": "systemd-sysv",
            "binary_version": "237-3ubuntu10.56"
        },
        {
            "binary_name": "systemd-tests",
            "binary_version": "237-3ubuntu10.56"
        },
        {
            "binary_name": "udev",
            "binary_version": "237-3ubuntu10.56"
        }
    ]
}