Important: kernel security update

{
  "id": "6ae19be471131adc742717215b5513507056bf9f67ac45e067fa72dfcbcb0f94",
  "url": "https://osv.dev/vulnerability/RLSA-2026%3A82807",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Important: kernel security update",
    "summary": "The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: openvswitch: defer tunnel netdev_put to RCU release (CVE-2026-31678) * kernel: ipv6: validate extension header length before copying to cmsg (CVE-2026-63920) * kernel: drm/amd/display: set new_stream to NULL after release (CVE-2026-68236) * kernel: drm/dp/mst: fix buffer overflows in sideband chunk accumulation (CVE-2026-68278) * kernel: wifi: mac80211: defer link RX stats percpu free to RCU (CVE-2026-68409) * kernel: drm/amdgpu/vce: fix integer overflow in image size (CVE-2026-68108) * kernel: cifs: validate DFS referral string offsets (CVE-2026-72318) * kernel: drm/vmwgfx: use check_add_overflow for shader size+offset bound (CVE-2026-80887) * kernel: drm/amdkfd: Add TLB flush after MES queue eviction/suspension (CVE-2026-89811) 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.",
    "evidence": "osv:RLSA-2026:82807",
    "products": [
      {
        "name": {
          "value": "kernel",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0:4.18.0-553.173.1.el8_10",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "RLSA-2026:82807",
      "aliases": [
        "RLSA-2026:82807"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0:4.18.0-553.173.1.el8_10"
                }
              ],
              "database_specific": {
                "yum_repository": "BaseOS"
              }
            }
          ],
          "package": {
            "name": "kernel",
            "purl": "pkg:rpm/rocky-linux/kernel?distro=rocky-linux-8&epoch=0",
            "ecosystem": "Rocky Linux:8"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/resf-osv-data/RLSA-2026:82807.json"
          }
        }
      ],
      "modified": "2026-10-15T12:45:06.517404920Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-31678",
        "CVE-2026-63920",
        "CVE-2026-68108",
        "CVE-2026-68236",
        "CVE-2026-68278",
        "CVE-2026-68409",
        "CVE-2026-72318",
        "CVE-2026-80887",
        "CVE-2026-89811"
      ],
      "references": [
        "https://errata.rockylinux.org/RLSA-2026:82807",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2461761",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2502330",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2513148",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2513287",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2513299",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2513361",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2516396",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2528788",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2535309",
        "https://access.redhat.com/errata/RHSA-2026:82807"
      ],
      "provider_metadata": {
        "license": "CC-BY-4.0",
        "license_url": "https://creativecommons.org/licenses/by/4.0/",
        "source_advisory": "RHSA-2026:82807"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-31678",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-63920",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-68108",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-68236",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-68278",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-68409",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-72318",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-80887",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-89811",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 331371,
  "published_at": "2026-10-15T12:12:31.576932+00:00"
}