CVE-2022-49938 (GCVE-0-2022-49938)

Vulnerability from cvelistv5 – Published: 2025-06-18 10:54 – Updated: 2025-12-23 13:26
VLAI?
Title
cifs: fix small mempool leak in SMB2_negotiate()
Summary
In the Linux kernel, the following vulnerability has been resolved: cifs: fix small mempool leak in SMB2_negotiate() In some cases of failure (dialect mismatches) in SMB2_negotiate(), after the request is sent, the checks would return -EIO when they should be rather setting rc = -EIO and jumping to neg_exit to free the response buffer from mempool.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 9764c02fcbad40001fd3f63558d918e4d519bb75 , < 9e3c9efa7caf16e5acc05eab5e4d0a714e1610b0 (git)
Affected: 9764c02fcbad40001fd3f63558d918e4d519bb75 , < 38a6b469bf22f153282fbe7d702a24e9eb43f50e (git)
Affected: 9764c02fcbad40001fd3f63558d918e4d519bb75 , < 27893dfc1285f80f80f46b3b8c95f5d15d2e66d0 (git)
Affected: 1ae6f05d4204d3a128bb9ba2c42e2a6c4ac687f1 (git)
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    Linux Linux Affected: 4.14
Unaffected: 0 , < 4.14 (semver)
Unaffected: 5.15.66 , ≤ 5.15.* (semver)
Unaffected: 5.19.8 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
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{
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      "affected": [
        {
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          "product": "Linux",
          "programFiles": [
            "fs/cifs/smb2pdu.c"
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: fix small mempool leak in SMB2_negotiate()\n\nIn some cases of failure (dialect mismatches) in SMB2_negotiate(), after\nthe request is sent, the checks would return -EIO when they should be\nrather setting rc = -EIO and jumping to neg_exit to free the response\nbuffer from mempool."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-23T13:26:10.562Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/27893dfc1285f80f80f46b3b8c95f5d15d2e66d0"
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      "title": "cifs: fix small mempool leak in SMB2_negotiate()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49938",
    "datePublished": "2025-06-18T10:54:39.458Z",
    "dateReserved": "2025-05-01T14:05:17.255Z",
    "dateUpdated": "2025-12-23T13:26:10.562Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.