CVE-2026-98170 (GCVE-0-2026-98170)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:44 – Updated: 2026-10-06 08:44
VLAI
Title
smb: client: fix OOB struct field reads in move_smb2_ea_to_cifs()
Summary
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix OOB struct field reads in move_smb2_ea_to_cifs() In move_smb2_ea_to_cifs(), the while (src_size > 0) loop condition is insufficient. It allows iteration to continue even if the remaining src_size is too small to contain a complete smb2_ea_info structure. Consequently, reads of ea_name_length and ea_value_length can occur out-of-bounds. Fix this by ensuring src_size >= sizeof(*src) before attempting to read any structure fields. Additionally, reject any next_entry_offset that is smaller than sizeof(*src) or that would advance the pointer beyond the available buffer. Note that for calls where the server returns a malformed EA list, the error returned to userspace changes from -ENODATA (getxattr) or -ERANGE (listxattr) to -EIO. This correctly signals a server protocol error rather than misleadingly indicating "attribute not present" or "output buffer too small".
Severity
No CVSS data available.
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 95907fea4fd8ccc736e0a428e52159b4d42b9958 , < d3546cecbf81d98bf3b472d341f981eb48c04f47 (git)
Affected: 95907fea4fd8ccc736e0a428e52159b4d42b9958 , < 34a3942e787b9c59758115bd65fe1ec89d68c7a4 (git)
Affected: 95907fea4fd8ccc736e0a428e52159b4d42b9958 , < 13efcd37a9b3d6ffa1579c3dda3e29c893ed9bca (git)
Affected: 95907fea4fd8ccc736e0a428e52159b4d42b9958 , < eeb5ef6083e1cefa2ef75041b5597ff228b8d7bb (git)
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Linux Linux Affected: 4.14
Unaffected: 0 , < 4.14 (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.54 , ≤ 6.18.* (semver)
Unaffected: 7.2.8 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc4 , ≤ * (original_commit_for_fix)
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Show details on NVD website

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    "dateReserved": "2026-09-25T10:25:14.322Z",
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      "cve": "CVE-2026-98170",
      "id": "CVE-2026-98170",
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      "title": "SUSE CVE CVE-2026-98170",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-98170.json",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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