{
  "fix": "RLSA-2026:21556",
  "url": "https://patchblox.com/security/fix/linux/rlsa-2026-21556",
  "summary": "RLSA-2026:21556, released May 30, 2026, fixes 19 CVEs in kernel (version 0:5.14.0-687.12.1.el9_8). None of them is reported as exploited. Patch Radar priority: Urgent.",
  "platform": "linux",
  "type": "advisory",
  "title": "kernel security update",
  "released": "2026-05-30T18:03:01Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2025-68366, rated Critical",
  "supported": true,
  "cveCount": 19,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.01587,
  "maxCvss": 9.4,
  "vendorAdvisory": "https://errata.rockylinux.org/RLSA-2026:21556",
  "appliesTo": [
    {
      "product": "kernel",
      "productUrl": "https://patchblox.com/security/product/linux/kernel",
      "release": "rocky 9",
      "fixedVersion": "0:5.14.0-687.12.1.el9_8",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2025-68366",
      "url": "https://patchblox.com/security/cve/CVE-2025-68366",
      "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  nbd: defer config unlock in nbd_genl_connect  Th...",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.8,
      "epss": 0.00198,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-23455",
      "url": "https://patchblox.com/security/cve/CVE-2026-23455",
      "title": "kernel: In the Linux kernel, the following vulnerability has been resolved:\nnetfilter: nf_conntrack_h323: check for zero leng...",
      "priority": "High",
      "severity": "moderate",
      "cvss": 9.1,
      "epss": 0.01587,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-31685",
      "url": "https://patchblox.com/security/cve/CVE-2026-31685",
      "title": "netfilter: ip6t_eui64: reject invalid MAC header for all packets",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 9.4,
      "epss": 0.00485,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-43158",
      "url": "https://patchblox.com/security/cve/CVE-2026-43158",
      "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  xfs: fix freemap adjustments when adding xattrs...",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.00469,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-43190",
      "url": "https://patchblox.com/security/cve/CVE-2026-43190",
      "title": "kernel: In the Linux kernel, the following vulnerability has been resolved:\nnetfilter: xt_tcpmss: check remaining length befo...",
      "priority": "High",
      "severity": "moderate",
      "cvss": 8.2,
      "epss": 0.00463,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-31709",
      "url": "https://patchblox.com/security/cve/CVE-2026-31709",
      "title": "smb: client: validate the whole DACL before rewriting it in cifsacl",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00345,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-31408",
      "url": "https://patchblox.com/security/cve/CVE-2026-31408",
      "title": "Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00322,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-43110",
      "url": "https://patchblox.com/security/cve/CVE-2026-43110",
      "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  wifi: brcmfmac: validate bsscfg indices in IF ev...",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.0027,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-43051",
      "url": "https://patchblox.com/security/cve/CVE-2026-43051",
      "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  HID: wacom: fix out-of-bounds read in wacom_intu...",
      "priority": "High",
      "severity": "high",
      "cvss": 8.1,
      "epss": 0.00256,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-38653",
      "url": "https://patchblox.com/security/cve/CVE-2025-38653",
      "title": "proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al",
      "priority": "High",
      "severity": "high",
      "cvss": 7.8,
      "epss": 0.00177,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-43303",
      "url": "https://patchblox.com/security/cve/CVE-2026-43303",
      "title": "mm/page_alloc: clear page-\u003Eprivate in free_pages_prepare()",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7.8,
      "epss": 0.00172,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-23392",
      "url": "https://patchblox.com/security/cve/CVE-2026-23392",
      "title": "netfilter: nf_tables: release flowtable after rcu grace period on error",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00165,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-71089",
      "url": "https://patchblox.com/security/cve/CVE-2025-71089",
      "title": "iommu: disable SVA when CONFIG_X86 is set",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00162,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-68183",
      "url": "https://patchblox.com/security/cve/CVE-2025-68183",
      "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ima: don\u0027t clear IMA_DIGSIG flag when setting or...",
      "priority": "High",
      "severity": "high",
      "cvss": 7.8,
      "epss": 0.00154,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2025-68724",
      "url": "https://patchblox.com/security/cve/CVE-2025-68724",
      "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  crypto: asymmetric_keys - prevent overflow in as...",
      "priority": "High",
      "severity": "high",
      "cvss": 8.1,
      "epss": 0.00142,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-43027",
      "url": "https://patchblox.com/security/cve/CVE-2026-43027",
      "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  netfilter: nf_conntrack_helper: pass helper to e...",
      "priority": "High",
      "severity": "high",
      "cvss": 7.8,
      "epss": 0.00131,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-43020",
      "url": "https://patchblox.com/security/cve/CVE-2026-43020",
      "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  Bluetooth: MGMT: validate LTK enc_size on load...",
      "priority": "High",
      "severity": "high",
      "cvss": 7.8,
      "epss": 0.00129,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-31684",
      "url": "https://patchblox.com/security/cve/CVE-2026-31684",
      "title": "net: sched: act_csum: validate nested VLAN headers",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 7.8,
      "epss": 0.00117,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-43023",
      "url": "https://patchblox.com/security/cve/CVE-2026-43023",
      "title": "kernel: In the Linux kernel, the following vulnerability has been resolved:\nBluetooth: SCO: fix race conditions in sco_sock_c...",
      "priority": "High",
      "severity": "moderate",
      "cvss": 7.8,
      "epss": 0.00097,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}