{
  "cveId": "CVE-2026-64356",
  "url": "https://patchblox.com/security/cve/CVE-2026-64356",
  "summary": "CVE-2026-64356 is fixed in 20 products on 1 platform, first by ALAS2023-2026-2045, released August 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  xfs: fix memory leak in xfs_dqinode_metadir_crea...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  xfs: fix memory leak in xfs_dqinode_metadir_create()  If xfs_metadir_create() fails in xfs_dqinode_metadir_create(), the current code returns directly, leaking the allocated update and transaction state. If the subsequent commit fails, the caller-owned inode reference is left behind.  Fix this memory leak by routing the create failure path through xfs_metadir_cancel().  For both create and commit failures, finish and release any inode returned to the caller, mirroring the unwind pattern in xfs_metadir_mkdir().  The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1.1.  An x86_64 allyesconfig build showed no new warnings. Runtime validation used kprobe fault injection during \u0060mount -o uquota\u0060 on a metadir XFS image. Injecting xfs_metadir_create() reproduced the old active-update path that left mount stuck later in mount setup; after this change, the same injection reported cancel_hits=1 and irele_hits=1. Injecting xfs_metadir_commit() exercised the old inode-reference leak path; after this change, it reported irele_hits=1.",
  "published": "2026-07-25T10:17:18Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00181,
  "epssPercentile": 0.07689,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "bpftool6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.39-79.141.amzn2023",
      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
      "released": "2026-08-03T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.39-79.141.amzn2023",
      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
      "released": "2026-08-03T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.18.39-79.141",
      "release": "amzn 2023",
      "fixedVersion": "1:1.0-0.amzn2023",
      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
      "released": "2026-08-03T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.39-79.141.amzn2023",
      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
      "released": "2026-08-03T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.39-79.141.amzn2023",
      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
      "released": "2026-08-03T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.39-79.141.amzn2023",
      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
      "released": "2026-08-03T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.39-79.141.amzn2023",
      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
      "released": "2026-08-03T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.39-79.141.amzn2023",
      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
      "released": "2026-08-03T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-headers",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.39-79.141.amzn2023",
      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
      "released": "2026-08-03T09:00:00Z"
    },
    {
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      "product": "kernel6.18-modules-extra",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.39-79.141.amzn2023",
      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
      "released": "2026-08-03T09:00:00Z"
    },
    {
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      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
      "released": "2026-08-03T09:00:00Z"
    },
    {
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      "release": "amzn 2023",
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      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
      "released": "2026-08-03T09:00:00Z"
    },
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      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
      "released": "2026-08-03T09:00:00Z"
    },
    {
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      "release": "amzn 2023",
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      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
      "released": "2026-08-03T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.4-1",
      "fix": "DEBIAN-CVE-2026-64356",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-64356",
      "released": "2026-08-07T15:22:10Z"
    },
    {
      "platform": "linux",
      "product": "microvm-kernel6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.39-79.141.amzn2023",
      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
      "released": "2026-08-03T09:00:00Z"
    },
    {
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      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
      "released": "2026-08-03T09:00:00Z"
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      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
      "released": "2026-08-03T09:00:00Z"
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    {
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      "release": "amzn 2023",
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      "fix": "ALAS2023-2026-2045",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2045",
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      "fix": "ALAS2023-2026-2045",
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      "released": "2026-08-03T09:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}