Vulnerability-Lookup

CVE-2022-2526 (GCVE-0-2022-2526)

Vulnerability from cvelistv5 – Published: 2022-09-09 00:00 – Updated: 2024-08-03 00:39

Summary

A use-after-free vulnerability was found in systemd. This issue occurs due to the on_stream_io() function and dns_stream_complete() 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.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-416

Assigner

redhat redhat root

References

2 references

URL	Tags
https://github.com/systemd/systemd/commit/d973d94…
https://security.netapp.com/advisory/ntap-2022111…

Impacted products

1 product

Vendor	Product	Version	CPE status
n/a	systemd-resolved	Affected: systemd 240

Show details on NVD website

JSON

To clipboard

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RHSA-2022:6551

Vulnerability from csaf_redhat - Published: 2022-09-19 11:53 - Updated: 2026-08-25 14:46

Summary

Red Hat Security Advisory: Red Hat Virtualization security update

Severity

Important

Scope

6 vulnerabilities in this advisory, including CVE-2022-2526.

CVE-2022-2526

9.8 (Critical)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Fixed: 2 products Known not affected: 6 products

https://access.redhat.com/errata/RHSA-2022:6551

Open the full advisory

RHSA-2022_6160

Vulnerability from csaf_redhat - Published: 2022-08-24 18:02 - Updated: 2024-11-22 19:52

Summary

Red Hat Security Advisory: systemd security update

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2022-2526.

CVE-2022-2526

9.8 (Critical)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Fixed: 441 products

https://access.redhat.com/errata/RHSA-2022:6160

Open the full advisory

RHSA-2022_6161

Vulnerability from csaf_redhat - Published: 2022-08-24 17:54 - Updated: 2024-11-22 19:53

Summary

Red Hat Security Advisory: systemd security update

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2022-2526.

CVE-2022-2526

9.8 (Critical)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Fixed: 77 products

https://access.redhat.com/errata/RHSA-2022:6161

Open the full advisory

RHSA-2022_6162

Vulnerability from csaf_redhat - Published: 2022-08-24 17:05 - Updated: 2024-11-22 19:52

Summary

Red Hat Security Advisory: systemd security update

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2022-2526.

CVE-2022-2526

9.8 (Critical)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Fixed: 77 products

https://access.redhat.com/errata/RHSA-2022:6162

Open the full advisory

RHSA-2022_6163

Vulnerability from csaf_redhat - Published: 2022-08-24 16:47 - Updated: 2024-11-22 19:52

Summary

Red Hat Security Advisory: systemd security update

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2022-2526.

CVE-2022-2526

9.8 (Critical)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Fixed: 45 products

https://access.redhat.com/errata/RHSA-2022:6163

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RHSA-2022_6206

Vulnerability from csaf_redhat - Published: 2022-08-29 17:23 - Updated: 2024-11-22 19:52

Summary

Red Hat Security Advisory: systemd security update

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2022-2526.

CVE-2022-2526

9.8 (Critical)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Fixed: 77 products

https://access.redhat.com/errata/RHSA-2022:6206

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RHSA-2022_6551

Vulnerability from csaf_redhat - Published: 2022-09-19 11:53 - Updated: 2024-11-22 19:52

Summary

Red Hat Security Advisory: Red Hat Virtualization security update

Severity

Important

Scope

6 vulnerabilities in this advisory, including CVE-2022-2526.

CVE-2022-2526

9.8 (Critical)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Fixed: 2 products Known not affected: 6 products

https://access.redhat.com/errata/RHSA-2022:6551

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UBUNTU-CVE-2022-2526 (CVE-2022-2526)

Vulnerability from osv_ubuntu – Published: 2022-08-24 00:00 – Updated: 2026-04-22 07:41 – Source website

Details

Severity

9.8 (Critical)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2022-2526	REPORT
	https://ubuntu.com/security/notices/USN-5583-1	ADVISORY
	https://ubuntu.com/security/notices/USN-5583-2	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2022-2526	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libnss-myhostname",
            "binary_version": "237-3ubuntu10.54"
          },
          {
            "binary_name": "libnss-mymachines",
            "binary_version": "237-3ubuntu10.54"
          },
          {
            "binary_name": "libnss-resolve",
            "binary_version": "237-3ubuntu10.54"
          },
          {
            "binary_name": "libnss-systemd",
            "binary_version": "237-3ubuntu10.54"
          },
          {
            "binary_name": "libpam-systemd",
            "binary_version": "237-3ubuntu10.54"
          },
          {
            "binary_name": "libsystemd0",
            "binary_version": "237-3ubuntu10.54"
          },
          {
            "binary_name": "libudev1",
            "binary_version": "237-3ubuntu10.54"
          },
          {
            "binary_name": "systemd",
            "binary_version": "237-3ubuntu10.54"
          },
          {
            "binary_name": "systemd-container",
            "binary_version": "237-3ubuntu10.54"
          },
          {
            "binary_name": "systemd-coredump",
            "binary_version": "237-3ubuntu10.54"
          },
          {
            "binary_name": "systemd-journal-remote",
            "binary_version": "237-3ubuntu10.54"
          },
          {
            "binary_name": "systemd-sysv",
            "binary_version": "237-3ubuntu10.54"
          },
          {
            "binary_name": "systemd-tests",
            "binary_version": "237-3ubuntu10.54"
          },
          {
            "binary_name": "udev",
            "binary_version": "237-3ubuntu10.54"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "systemd",
        "purl": "pkg:deb/ubuntu/systemd@237-3ubuntu10.54?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "237-3ubuntu10.54"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "234-2ubuntu12",
        "235-2ubuntu3",
        "235-3ubuntu2",
        "235-3ubuntu3",
        "237-3ubuntu3",
        "237-3ubuntu4",
        "237-3ubuntu6",
        "237-3ubuntu7",
        "237-3ubuntu8",
        "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"
      ]
    }
  ],
  "aliases": [],
  "details": "A use-after-free vulnerability was found in systemd. This issue occurs due to the on_stream_io() function and dns_stream_complete() function in \u0027resolved-dns-stream.c\u0027 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.",
  "id": "UBUNTU-CVE-2022-2526",
  "modified": "2026-04-22T07:41:15Z",
  "published": "2022-08-24T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-2526"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5583-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5583-2"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2022-2526"
    }
  ],
  "related": [
    "USN-5583-1",
    "USN-5583-2"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2022-2526"
  ]
}

WID-SEC-W-2022-1177

Vulnerability from csaf_certbund - Published: 2022-08-24 22:00 - Updated: 2023-05-30 22:00

Summary

systemd: Schwachstelle ermöglicht nicht spezifizierten Angriff

Severity

Hoch

Scope

1 vulnerability in this advisory, including CVE-2022-2526.

CVE-2022-2526

Es existiert eine Schwachstelle in systemd. Es handelt sich um einen Use-after-Free-Fehler, der aufgrund den Funktionen "on_stream_io()" sowie "dns_stream_complete()" auftritt. Ein Angreifer kann diese Schwachstelle ausnutzen, um nicht näher spezifizierte Auswirkungen zu verursachen.

Known affected: 22 products

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WID-SEC-W-2023-0137

Vulnerability from csaf_certbund - Published: 2023-01-17 23:00 - Updated: 2024-11-21 23:00

Summary

Oracle Communications: Mehrere Schwachstellen

Severity

Hoch

Scope

42 vulnerabilities in this advisory, including CVE-2022-2526.

CVE-2022-2526

In Oracle Communications existieren mehrere Schwachstellen. Durch Ausnutzung dieser Schwachstellen kann ein entfernter, anonymer oder authentisierter Angreifer die Vertraulichkeit, Integrität und Verfügbarkeit gefährden. Für die Ausnutzung einiger dieser Schwachstellen ist keine Benutzerinteraktion notwendig. Oracle veröffentlicht keine weiteren Details zu diesen Schwachstellen (außer der Information in der Risiko Matrix im Oracle Advisory zum Critical Patch Update, siehe Link unten in diesem Advisory). Aufgrund der knappen Informationslage erfolgt die Bewertung der Schadenshöhe ausschließlich auf Basis der CVSS Impact Matrix. Der Maximalwert für diese Produkte ist "HIGH" für "Confidentiality", "Integrity" und "Availability" über alle Schwachstellen aggregiert und bewirkt damit eine Bewertung mit dem Wert "HOCH" für die Schadenshöhe.

Known affected: 25 products Last affected: 1 product

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2022-2526 (GCVE-0-2022-2526)

UBUNTU-CVE-2022-2526 (CVE-2022-2526)

Tags

Sightings

Nomenclature

Related by attack behaviour