ALSA-2026:74132 (CVE-2026-63823)

Vulnerability from osv_almalinux – Published: 2026-09-30 00:00 – Updated: 2026-10-01 09:24 – Source website
VLAI
Summary
Moderate: kernel-rt security, bug fix, and enhancement 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: RDMA/siw: Reject MPA FPDU length underflow before signed receive math (CVE-2026-64102)
  • kernel: vmxnet3: fix BUG_ON in vmxnet3_get_hdr_len() for Geneve packets (CVE-2026-68299)
  • kernel: net/liquidio: drop cached VF pci_dev LUT (CVE-2026-72329)
  • kernel: dm-integrity: don't increment hash_offset twice (CVE-2026-72099)

Bug Fix(es) and Enhancement(s):

  • [AlmaLinux 8.10] "kernel BUG at lib/list_debug.c:28!": list_add corruption in register_trace_event AlmaLinux 8.10 (JIRA:AlmaLinux-214136)
  • request_key_auth use-after-free on every request-key upcall since 4.18.0-553.165.1 (regression from CVE-2026-63823 backport) (JIRA:AlmaLinux-270349)

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": "4.18.0-553.170.1.rt7.511.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.170.1.rt7.511.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.170.1.rt7.511.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.170.1.rt7.511.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.170.1.rt7.511.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug-modules"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.170.1.rt7.511.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-debug-modules-extra"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.170.1.rt7.511.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.170.1.rt7.511.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-modules"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.170.1.rt7.511.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-rt-modules-extra"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-553.170.1.rt7.511.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: RDMA/siw: Reject MPA FPDU length underflow before signed receive math (CVE-2026-64102)\n  * kernel: vmxnet3: fix BUG_ON in vmxnet3_get_hdr_len() for Geneve packets (CVE-2026-68299)\n  * kernel: net/liquidio: drop cached VF pci_dev LUT (CVE-2026-72329)\n  * kernel: dm-integrity: don\u0027t increment hash_offset twice (CVE-2026-72099)\n\n\nBug Fix(es) and Enhancement(s):  \n\n  * [AlmaLinux 8.10] \"kernel BUG at lib/list_debug.c:28!\": list_add corruption in register_trace_event AlmaLinux 8.10 (JIRA:AlmaLinux-214136)\n  * request_key_auth use-after-free on every request-key upcall since 4.18.0-553.165.1 (regression from CVE-2026-63823 backport) (JIRA:AlmaLinux-270349)\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-2026:74132",
  "modified": "2026-10-01T09:24:16Z",
  "published": "2026-09-30T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:74132"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-64102"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-68299"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-72099"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-72329"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2502494"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2513356"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2516301"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2516445"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/8/ALSA-2026-74132.html"
    }
  ],
  "related": [
    "CVE-2026-63823",
    "CVE-2026-64102",
    "CVE-2026-68299",
    "CVE-2026-72099",
    "CVE-2026-72329"
  ],
  "schema_version": "1.7.0",
  "summary": "Moderate: kernel-rt security, bug fix, and enhancement update",
  "upstream": [
    "CVE-2026-63823",
    "CVE-2026-64102",
    "CVE-2026-68299",
    "CVE-2026-72099",
    "CVE-2026-72329"
  ]
}



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