{
  "fix": "RHSA-2026:57254",
  "url": "https://patchblox.com/security/fix/linux/rhsa-2026-57254",
  "summary": "RHSA-2026:57254, released August 20, 2026, fixes 9 CVEs across 12 products. None of them is reported as exploited. Patch Radar priority: Urgent.",
  "platform": "linux",
  "type": "advisory",
  "title": "Security update for 12 packages",
  "released": "2026-08-20T23:27:41Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2026-52991, rated Critical",
  "supported": true,
  "cveCount": 9,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00778,
  "maxCvss": 9.8,
  "vendorAdvisory": "https://access.redhat.com/errata/RHSA-2026:57254",
  "appliesTo": [
    {
      "product": "kernel-rt",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.157.1.rt7.498.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-core",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-core",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.157.1.rt7.498.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-debug",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-debug",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.157.1.rt7.498.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-debug-core",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-debug-core",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.157.1.rt7.498.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-debug-devel",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-debug-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.157.1.rt7.498.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-debug-kvm",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-debug-kvm",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.157.1.rt7.498.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-debug-modules",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-debug-modules",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.157.1.rt7.498.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-debug-modules-extra",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-debug-modules-extra",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.157.1.rt7.498.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-devel",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.157.1.rt7.498.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-kvm",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-kvm",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.157.1.rt7.498.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-modules",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-modules",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.157.1.rt7.498.el8_10",
      "supported": true
    },
    {
      "product": "kernel-rt-modules-extra",
      "productUrl": "https://patchblox.com/security/product/linux/kernel-rt-modules-extra",
      "release": "RHEL 8",
      "fixedVersion": "0:4.18.0-553.157.1.rt7.498.el8_10",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-52991",
      "url": "https://patchblox.com/security/cve/CVE-2026-52991",
      "title": "sched/psi: fix race between file release and pressure write",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 9.8,
      "epss": 0.00147,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63887",
      "url": "https://patchblox.com/security/cve/CVE-2026-63887",
      "title": "kernel: In the Linux kernel, the following vulnerability has been resolved:\nscsi: target: iscsi: Bound iscsi_encode_text_outp...",
      "priority": "High",
      "severity": "important",
      "cvss": 9.8,
      "epss": 0.00778,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-63888",
      "url": "https://patchblox.com/security/cve/CVE-2026-63888",
      "title": "bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: n...",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.8,
      "epss": 0.00778,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-68388",
      "url": "https://patchblox.com/security/cve/CVE-2026-68388",
      "title": "smb/client: handle overlapping allocated ranges in fallocate",
      "priority": "High",
      "severity": "Moderate",
      "cvss": 9.8,
      "epss": 0.00514,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-64048",
      "url": "https://patchblox.com/security/cve/CVE-2026-64048",
      "title": "python3-perf: The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: n...",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00501,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-64379",
      "url": "https://patchblox.com/security/cve/CVE-2026-64379",
      "title": "smb: client: mask server-provided mode to 07777 in modefromsid",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00309,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2024-56602",
      "url": "https://patchblox.com/security/cve/CVE-2024-56602",
      "title": "bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: n...",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00231,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-53189",
      "url": "https://patchblox.com/security/cve/CVE-2026-53189",
      "title": "bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: n...",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.0013,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-46120",
      "url": "https://patchblox.com/security/cve/CVE-2026-46120",
      "title": "bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: n...",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.00128,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}