alsa-2026:6036
Vulnerability from osv_almalinux
Published
2026-03-30 00:00
Modified
2026-03-30 10:51
Summary
Moderate: kernel-rt security update
Details

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

  • kernel: Linux kernel: Use-After-Free vulnerability in ATM subsystem (CVE-2025-38180)
  • kernel: macvlan: fix error recovery in macvlan_common_newlink() (CVE-2026-23209)
  • kernel: net/sched: cls_u32: use skb_header_pointer_careful() (CVE-2026-23204)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.115.1.rt7.456.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.115.1.rt7.456.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.115.1.rt7.456.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.115.1.rt7.456.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.115.1.rt7.456.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug-modules"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.115.1.rt7.456.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug-modules-extra"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.115.1.rt7.456.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.115.1.rt7.456.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-modules"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.115.1.rt7.456.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-modules-extra"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.115.1.rt7.456.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.  \n\nSecurity Fix(es):  \n\n  * kernel: Linux kernel: Use-After-Free vulnerability in ATM subsystem (CVE-2025-38180)\n  * kernel: macvlan: fix error recovery in macvlan_common_newlink() (CVE-2026-23209)\n  * kernel: net/sched: cls_u32: use skb_header_pointer_careful() (CVE-2026-23204)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:6036",
  "modified": "2026-03-30T10:51:16Z",
  "published": "2026-03-30T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:6036"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-38180"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-23204"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-23209"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2376376"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2439900"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2439931"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/8/ALSA-2026-6036.html"
    }
  ],
  "related": [
    "CVE-2025-38180",
    "CVE-2026-23209",
    "CVE-2026-23204"
  ],
  "summary": "Moderate: kernel-rt security update"
}



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