CVE-2025-68806 (GCVE-0-2025-68806)

Vulnerability from cvelistv5 – Published: 2026-01-13 15:29 – Updated: 2026-05-23 16:02
VLAI
Title
ksmbd: fix buffer validation by including null terminator size in EA length
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix buffer validation by including null terminator size in EA length The smb2_set_ea function, which handles Extended Attributes (EA), was performing buffer validation checks that incorrectly omitted the size of the null terminating character (+1 byte) for EA Name. This patch fixes the issue by explicitly adding '+ 1' to EaNameLength where the null terminator is expected to be present in the buffer, ensuring the validation accurately reflects the total required buffer size.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d070c4dd2a5bed4e9832eec5b6c029c7d14892ea , < cae52c592a07e1d3fa3338a5f064a374a5f26750 (git)
Affected: 0ba5439d9afa2722e7728df56f272c89987540a4 , < a28a375a5439eb474e9f284509a407efb479c925 (git)
Affected: 0ba5439d9afa2722e7728df56f272c89987540a4 , < d26af6d14da43ab92d07bc60437c62901dc522e6 (git)
Affected: 0ba5439d9afa2722e7728df56f272c89987540a4 , < 6dc8cf6e7998ef7aeb9383a4c2904ea5d22fa2e4 (git)
Affected: 0ba5439d9afa2722e7728df56f272c89987540a4 , < 95d7a890e4b03e198836d49d699408fd1867cb55 (git)
Affected: bb5bf157b5be1643cccc7cbbe57fcdef9ae52c2c (git)
Affected: 1a13ecb96230e8b7b91967e292836f7b01ec8111 (git)
Affected: 404e7c01e16288b5e0171d1d8fd3328e806d0794 (git)
Affected: 6.1.52 , < 6.1.160 (semver)
Affected: 5.15.131 , < 5.16 (semver)
Affected: 6.4.15 , < 6.5 (semver)
Affected: 6.5.2 , < 6.6 (semver)
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Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.1.160 , ≤ 6.1.* (semver)
Unaffected: 6.6.120 , ≤ 6.6.* (semver)
Unaffected: 6.12.64 , ≤ 6.12.* (semver)
Unaffected: 6.18.3 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix buffer validation by including null terminator size in EA length\n\nThe smb2_set_ea function, which handles Extended Attributes (EA),\nwas performing buffer validation checks that incorrectly omitted the size\nof the null terminating character (+1 byte) for EA Name.\nThis patch fixes the issue by explicitly adding \u0027+ 1\u0027 to EaNameLength where\nthe null terminator is expected to be present in the buffer, ensuring\nthe validation accurately reflects the total required buffer size."
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      "providerMetadata": {
        "dateUpdated": "2026-05-23T16:02:54.141Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "dateReserved": "2025-12-24T10:30:51.045Z",
    "dateUpdated": "2026-05-23T16:02:54.141Z",
    "state": "PUBLISHED"
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}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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