Vulnerability-Lookup

RHSA-2026:46016

Vulnerability from csaf_redhat - Published: 2026-07-26 11:53 - Updated: 2026-09-08 22:44

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Severity

Moderate

Notes

Topic: An update for Red Hat Hardened Images RPMs is now available.

Details: This update includes the following RPMs: systemd: * systemd-261.2-1.hum1 (aarch64, x86_64) * systemd-boot-unsigned-261.2-1.hum1 (aarch64, x86_64) * systemd-container-261.2-1.hum1 (aarch64, x86_64) * systemd-devel-261.2-1.hum1 (aarch64, x86_64) * systemd-journal-remote-261.2-1.hum1 (aarch64, x86_64) * systemd-libs-261.2-1.hum1 (aarch64, x86_64) * systemd-networkd-261.2-1.hum1 (aarch64, x86_64) * systemd-networkd-defaults-261.2-1.hum1 (noarch) * systemd-oomd-defaults-261.2-1.hum1 (noarch) * systemd-pam-261.2-1.hum1 (aarch64, x86_64) * systemd-resolved-261.2-1.hum1 (aarch64, x86_64) * systemd-rpm-macros-261.2-1.hum1 (noarch) * systemd-shared-261.2-1.hum1 (aarch64, x86_64) * systemd-standalone-repart-261.2-1.hum1 (aarch64, x86_64) * systemd-standalone-shutdown-261.2-1.hum1 (aarch64, x86_64) * systemd-standalone-sysusers-261.2-1.hum1 (aarch64, x86_64) * systemd-standalone-tmpfiles-261.2-1.hum1 (aarch64, x86_64) * systemd-sysusers-261.2-1.hum1 (aarch64, x86_64) * systemd-tests-261.2-1.hum1 (aarch64, x86_64) * systemd-udev-261.2-1.hum1 (aarch64, x86_64) * systemd-ukify-261.2-1.hum1 (noarch) * systemd-261.2-1.hum1.src (src)

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2026-15059

A flaw was found in systemd-oomd. Local unprivileged users can exploit a missing path traversal validation in the systemd-oomd Inter-Process Communication (IPC) Application Programming Interface (API). This vulnerability allows them to terminate arbitrary local processes, leading to a denial of service.

5.5 (Medium)


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

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected products

Fixed 4 products

Product	Version	Remediation
Unresolved product id: Red Hat Hardened Images:systemd-main@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:systemd-main@noarch	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:systemd-main@src	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:systemd-main@x86_64	—	Vendor Fix fix Workaround

Threats

Impact Moderate

References

10 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:46016	self
https://images.redhat.com/	external
https://access.redhat.com/security/cve/CVE-2026-15059	external
https://access.redhat.com/security/updates/classi…	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-15059	self
https://bugzilla.redhat.com/show_bug.cgi?id=2513492	external
https://www.cve.org/CVERecord?id=CVE-2026-15059	external
https://nvd.nist.gov/vuln/detail/CVE-2026-15059	external
https://github.com/systemd/systemd/security/advis…	external

JSON

To clipboard

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        "text": "This update includes the following RPMs:\n\nsystemd:\n  * systemd-261.2-1.hum1 (aarch64, x86_64)\n  * systemd-boot-unsigned-261.2-1.hum1 (aarch64, x86_64)\n  * systemd-container-261.2-1.hum1 (aarch64, x86_64)\n  * systemd-devel-261.2-1.hum1 (aarch64, x86_64)\n  * systemd-journal-remote-261.2-1.hum1 (aarch64, x86_64)\n  * systemd-libs-261.2-1.hum1 (aarch64, x86_64)\n  * systemd-networkd-261.2-1.hum1 (aarch64, x86_64)\n  * systemd-networkd-defaults-261.2-1.hum1 (noarch)\n  * systemd-oomd-defaults-261.2-1.hum1 (noarch)\n  * systemd-pam-261.2-1.hum1 (aarch64, x86_64)\n  * systemd-resolved-261.2-1.hum1 (aarch64, x86_64)\n  * systemd-rpm-macros-261.2-1.hum1 (noarch)\n  * systemd-shared-261.2-1.hum1 (aarch64, x86_64)\n  * systemd-standalone-repart-261.2-1.hum1 (aarch64, x86_64)\n  * systemd-standalone-shutdown-261.2-1.hum1 (aarch64, x86_64)\n  * systemd-standalone-sysusers-261.2-1.hum1 (aarch64, x86_64)\n  * systemd-standalone-tmpfiles-261.2-1.hum1 (aarch64, x86_64)\n  * systemd-sysusers-261.2-1.hum1 (aarch64, x86_64)\n  * systemd-tests-261.2-1.hum1 (aarch64, x86_64)\n  * systemd-udev-261.2-1.hum1 (aarch64, x86_64)\n  * systemd-ukify-261.2-1.hum1 (noarch)\n  * systemd-261.2-1.hum1.src (src)",
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      "cve": "CVE-2026-15059",
      "cwe": {
        "id": "CWE-22",
        "name": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
      },
      "discovery_date": "2026-08-10T13:41:25.949239+00:00",
      "ids": [
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          "text": "2513492"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in systemd-oomd. Local unprivileged users can exploit a missing path traversal validation in the systemd-oomd Inter-Process Communication (IPC) Application Programming Interface (API). This vulnerability allows them to terminate arbitrary local processes, leading to a denial of service.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "systemd: systemd-oomd: Unprivileged users can terminate arbitrary processes via IPC API",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "systemd-oomd is vulnerable to a path traversal in its Varlink ManagedOOM IPC handler: an unprivileged local user can supply a crafted cgroup path containing ../ sequences that, after path_simplify(), escapes the /sys/fs/cgroup hierarchy, allowing the daemon to act on \u2014 and terminate the processes of \u2014 an arbitrary cgroup the caller does not own (CWE-22).\n\nRed Hat rates this Moderate (CVSS 5.5, AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H), consistent with the upstream advisory (GHSA-652q-wxr6-h5j6). Exploitation is bounded by significant runtime preconditions: it requires a local unprivileged account, the systemd-oomd service must be actively running (it is not enabled by default on Red Hat Enterprise Linux server installations), the attacker must reach the ManagedOOM Varlink socket, and must know the target PID/cgroup. Impact is limited to availability (process termination); there is no confidentiality or integrity impact.\n\nAffected Red Hat products ship systemd \u003e= 250 (RHEL 9 / 10, RHIVOS). Releases shipping systemd \u003c 250 (RHEL 7 with systemd 219, RHEL 8 with systemd 239) are not affected \u2014 the vulnerable oomd cgroup-path handling was introduced in systemd 250 and the code is not present in those versions.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:systemd-main@aarch64",
          "Red Hat Hardened Images:systemd-main@noarch",
          "Red Hat Hardened Images:systemd-main@src",
          "Red Hat Hardened Images:systemd-main@x86_64"
        ]
      },
      "references": [
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-15059"
        },
        {
          "category": "external",
          "summary": "RHBZ#2513492",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513492"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-15059",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-15059"
        },
        {
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          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-15059",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15059"
        },
        {
          "category": "external",
          "summary": "https://github.com/systemd/systemd/security/advisories/GHSA-652q-wxr6-h5j6",
          "url": "https://github.com/systemd/systemd/security/advisories/GHSA-652q-wxr6-h5j6"
        }
      ],
      "release_date": "2026-08-10T13:02:31.716000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-26T11:53:45+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:systemd-main@aarch64",
            "Red Hat Hardened Images:systemd-main@noarch",
            "Red Hat Hardened Images:systemd-main@src",
            "Red Hat Hardened Images:systemd-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:46016"
        },
        {
          "category": "workaround",
          "details": "On systems that do not require memory-pressure-based OOM management, disable the systemd-oomd service to remove the attack surface entirely:\n\n    systemctl disable --now systemd-oomd.service\n\nWhere systemd-oomd must remain enabled, restrict local access to untrusted users. Note that on Red Hat Enterprise Linux server profiles systemd-oomd is not enabled by default, so default server installations are not exposed until the service is explicitly started.",
          "product_ids": [
            "Red Hat Hardened Images:systemd-main@aarch64",
            "Red Hat Hardened Images:systemd-main@noarch",
            "Red Hat Hardened Images:systemd-main@src",
            "Red Hat Hardened Images:systemd-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:systemd-main@aarch64",
            "Red Hat Hardened Images:systemd-main@noarch",
            "Red Hat Hardened Images:systemd-main@src",
            "Red Hat Hardened Images:systemd-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "systemd: systemd-oomd: Unprivileged users can terminate arbitrary processes via IPC API"
    }
  ]
}

CVE-2026-15059 (GCVE-0-2026-15059)

Vulnerability from cvelistv5 – Published: 2026-08-10 13:02 – Updated: 2026-08-10 17:58

Title

systemd-oomd: unprivileged users can terminate arbitrary processes

Summary

Local unprivileged users can terminate arbitrary local processes via a systemd-oomd IPC API due to a missing path traversal validation.

Severity

5.5 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-10 17:57 UTC

CWE

Assigner

systemd redhat root

References

1 reference

URL	Tags
https://github.com/systemd/systemd/security/advis…

Impacted products

1 product

Vendor	Product	Version
systemd	systemd-oomd	Affected: 250 , < 261, 260.3, 259.7, 258.9 (custom)

Date Public

2026-08-10 13:00

Show details on NVD website

JSON

To clipboard

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          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-10T13:02:31.716Z",
        "orgId": "98a521c5-3a3e-4e2b-bc27-002067e0463c",
        "shortName": "systemd"
      },
      "references": [
        {
          "url": "https://github.com/systemd/systemd/security/advisories/GHSA-652q-wxr6-h5j6"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "systemd-oomd: unprivileged users can terminate arbitrary processes",
      "x_generator": {
        "engine": "Vulnogram 1.0.4"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "98a521c5-3a3e-4e2b-bc27-002067e0463c",
    "assignerShortName": "systemd",
    "cveId": "CVE-2026-15059",
    "datePublished": "2026-08-10T13:02:31.716Z",
    "dateReserved": "2026-07-08T14:15:01.392Z",
    "dateUpdated": "2026-08-10T17:58:08.288Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

RHSA-2026:46016

CVE-2026-15059 (GCVE-0-2026-15059)

Tags

Sightings

Nomenclature