{
  "cveId": "CVE-2026-97554",
  "url": "https://patchblox.com/security/cve/CVE-2026-97554",
  "summary": "CVE-2026-97554 is fixed in 14 products on 1 platform, first by DEBIAN-CVE-2026-97554, released October 2, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "smb: client: avoid using uninitialized SIDs in cifs_posix_to_fattr()",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  smb: client: avoid using uninitialized SIDs in cifs_posix_to_fattr()  cifs_posix_to_fattr() ignores the return value of posix_info_parse(). When a malformed POSIX directory entry is encountered (e.g. invalid SID lengths from an untrusted server), posix_info_parse() returns -1 without populating the \u0027parsed\u0027 struct.  The uninitialized stack memory in parsed.owner and parsed.group is then passed to sid_to_id(), which processes the garbage bytes and passes them to request_key() to construct a SID string, potentially leaking kernel stack contents to the userspace idmap daemon.  Fix this by checking the return value and skipping the SID-to-id mapping when parsing fails.  The remaining fattr fields (timestamps, mode, etc.) are populated directly from the \u0027info\u0027 pointer so they are unaffected.",
  "published": "2026-09-25T11:17:05Z",
  "severity": "Moderate",
  "cvss": 7.1,
  "epss": 0.00212,
  "epssPercentile": 0.11545,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97554",
  "fixes": [
    {
      "platform": "linux",
      "product": "dtb-aarch64",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "OPENSUSE-SU-2026:22167-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22167-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "OPENSUSE-SU-2026:22167-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22167-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "SUSE-SU-2026:24446-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24446-1",
      "released": "2026-11-07T00:45:20Z"
    },
    {
      "platform": "linux",
      "product": "kernel-azure",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "OPENSUSE-SU-2026:22167-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22167-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
      "platform": "linux",
      "product": "kernel-azure",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "SUSE-SU-2026:24446-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24446-1",
      "released": "2026-11-07T00:45:20Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "OPENSUSE-SU-2026:22167-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22167-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "SUSE-SU-2026:24446-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24446-1",
      "released": "2026-11-07T00:45:20Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default-base",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.40.1.160000.2.29",
      "fix": "OPENSUSE-SU-2026:22167-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22167-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default-base",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.40.1.160000.2.29",
      "fix": "SUSE-SU-2026:24446-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24446-1",
      "released": "2026-11-07T00:45:20Z"
    },
    {
      "platform": "linux",
      "product": "kernel-docs",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "OPENSUSE-SU-2026:22167-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22167-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
      "platform": "linux",
      "product": "kernel-docs",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "SUSE-SU-2026:24446-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24446-1",
      "released": "2026-11-07T00:45:20Z"
    },
    {
      "platform": "linux",
      "product": "kernel-kvmsmall",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "OPENSUSE-SU-2026:22167-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22167-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
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      "fix": "SUSE-SU-2026:24446-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24446-1",
      "released": "2026-11-07T00:45:20Z"
    },
    {
      "platform": "linux",
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      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "OPENSUSE-SU-2026:22167-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22167-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
      "platform": "linux",
      "product": "kernel-obs-qa",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "OPENSUSE-SU-2026:22167-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22167-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
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      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "SUSE-SU-2026:24446-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24446-1",
      "released": "2026-11-07T00:45:20Z"
    },
    {
      "platform": "linux",
      "product": "kernel-rt",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "OPENSUSE-SU-2026:22167-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22167-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
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      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "OPENSUSE-SU-2026:22167-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22167-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
      "platform": "linux",
      "product": "kernel-source",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "SUSE-SU-2026:24446-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24446-1",
      "released": "2026-11-07T00:45:20Z"
    },
    {
      "platform": "linux",
      "product": "kernel-syms",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "OPENSUSE-SU-2026:22167-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22167-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
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      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "SUSE-SU-2026:24446-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24446-1",
      "released": "2026-11-07T00:45:20Z"
    },
    {
      "platform": "linux",
      "product": "kernel-zfcpdump",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.40.1",
      "fix": "OPENSUSE-SU-2026:22167-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22167-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
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      "fix": "SUSE-SU-2026:24446-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24446-1",
      "released": "2026-11-07T00:45:20Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.115-2",
      "fix": "DEBIAN-CVE-2026-97554",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-97554",
      "released": "2026-10-02T21:04:56Z"
    },
    {
      "platform": "linux",
      "product": "linux",
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      "fixedVersion": "7.2.7-1",
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      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-97554",
      "released": "2026-10-02T21:04:56Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}