alsa-2026:26428
Vulnerability from osv_almalinux
Published
2026-06-16 00:00
Modified
2026-06-17 09:31
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: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)
  • kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787)
  • kernel: Buffer overflow in drivers/xen/sys-hypervisor.c (CVE-2026-31786)
  • kernel: wifi: brcmfmac: validate bsscfg indices in IF events (CVE-2026-43110)
  • kernel: netfilter: flowtable: strictly check for maximum number of actions (CVE-2026-43329)
  • kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056)
  • kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152)
  • kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125)

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": "4.18.0-553.134.1.rt7.475.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.134.1.rt7.475.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.134.1.rt7.475.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.134.1.rt7.475.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.134.1.rt7.475.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug-modules"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.134.1.rt7.475.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug-modules-extra"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.134.1.rt7.475.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.134.1.rt7.475.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-modules"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.134.1.rt7.475.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-modules-extra"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.134.1.rt7.475.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: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)\n  * kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787)\n  * kernel: Buffer overflow in drivers/xen/sys-hypervisor.c (CVE-2026-31786)\n  * kernel: wifi: brcmfmac: validate bsscfg indices in IF events (CVE-2026-43110)\n  * kernel: netfilter: flowtable: strictly check for maximum number of actions (CVE-2026-43329)\n  * kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056)\n  * kernel: wifi: mac80211: drop stray \u0027static\u0027 from fast-RX rx_result (CVE-2026-46152)\n  * kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125)\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-2026:26428",
  "modified": "2026-06-17T09:31:52Z",
  "published": "2026-06-16T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:26428"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-31669"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-31786"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-31787"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-43110"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-43329"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-46056"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-46125"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-46152"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2461503"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2464092"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2464096"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2467014"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2468124"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2482181"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2482563"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2482608"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/8/ALSA-2026-26428.html"
    }
  ],
  "related": [
    "CVE-2026-31669",
    "CVE-2026-31787",
    "CVE-2026-31786",
    "CVE-2026-43110",
    "CVE-2026-43329",
    "CVE-2026-46056",
    "CVE-2026-46152",
    "CVE-2026-46125"
  ],
  "summary": "Important: kernel-rt security update"
}



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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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