ALSA-2026:87374

Vulnerability from osv_almalinux – Published: 2026-10-21 00:00 – Updated: 2026-10-22 08:53 – Source website
VLAI
Summary
Important: 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: ipv4: raw: reject IP_HDRINCL packets with ihl < 5 (CVE-2026-64114)
  • kernel: fuse: re-lock request before returning from fuse_ref_folio() (CVE-2026-64266)
  • kernel: ipv4: fib: free fib_alias with kfree_rcu() on insert error path (CVE-2026-64572)
  • kernel: ALSA: seq: close a re-opened queue timer in the destructor (CVE-2026-68202)
  • kernel: xfs: bounds-check buffer log item's dirty bitmap (CVE-2026-80536)
  • kernel: inet: frags: strip GSO state from fragments before reassembly (CVE-2026-80590)
  • kernel: vfio/pci: clear vdev->msi_perm after freeing it on init failure (CVE-2026-89777)

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": "4.18.0-553.177.1.rt7.518.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.177.1.rt7.518.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.177.1.rt7.518.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.177.1.rt7.518.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.177.1.rt7.518.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug-modules"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.177.1.rt7.518.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug-modules-extra"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.177.1.rt7.518.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.177.1.rt7.518.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-modules"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.177.1.rt7.518.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-modules-extra"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.177.1.rt7.518.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: ipv4: raw: reject IP_HDRINCL packets with ihl \u003c 5 (CVE-2026-64114)\n  * kernel: fuse: re-lock request before returning from fuse_ref_folio() (CVE-2026-64266)\n  * kernel: ipv4: fib: free fib_alias with kfree_rcu() on insert error path (CVE-2026-64572)\n  * kernel: ALSA: seq: close a re-opened queue timer in the destructor (CVE-2026-68202)\n  * kernel: xfs: bounds-check buffer log item\u0027s dirty bitmap (CVE-2026-80536)\n  * kernel: inet: frags: strip GSO state from fragments before reassembly (CVE-2026-80590)\n  * kernel: vfio/pci: clear vdev-\u003emsi_perm after freeing it on init failure (CVE-2026-89777)\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-2026:87374",
  "modified": "2026-10-22T08:53:18Z",
  "published": "2026-10-21T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:87374"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-64114"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-64266"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-64572"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-68202"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-80536"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-80590"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-89777"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2502486"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2507098"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2511413"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2513245"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2524501"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2525413"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2535066"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/8/ALSA-2026-87374.html"
    }
  ],
  "related": [
    "CVE-2026-64114",
    "CVE-2026-64266",
    "CVE-2026-64572",
    "CVE-2026-68202",
    "CVE-2026-80536",
    "CVE-2026-80590",
    "CVE-2026-89777"
  ],
  "summary": "Important: kernel-rt security update"
}



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