Vulnerability-Lookup

GHSA-5WX2-VV79-WFG8

Vulnerability from github – Published: 2025-09-17 15:30 – Updated: 2025-12-11 18:30

Details

In the Linux kernel, the following vulnerability has been resolved:

cifs: Fix memory leak when build ntlmssp negotiate blob failed

There is a memory leak when mount cifs: unreferenced object 0xffff888166059600 (size 448): comm "mount.cifs", pid 51391, jiffies 4295596373 (age 330.596s) hex dump (first 32 bytes): fe 53 4d 42 40 00 00 00 00 00 00 00 01 00 82 00 .SMB@........... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<0000000060609a61>] mempool_alloc+0xe1/0x260 [<00000000adfa6c63>] cifs_small_buf_get+0x24/0x60 [<00000000ebb404c7>] __smb2_plain_req_init+0x32/0x460 [<00000000bcf875b4>] SMB2_sess_alloc_buffer+0xa4/0x3f0 [<00000000753a2987>] SMB2_sess_auth_rawntlmssp_negotiate+0xf5/0x480 [<00000000f0c1f4f9>] SMB2_sess_setup+0x253/0x410 [<00000000a8b83303>] cifs_setup_session+0x18f/0x4c0 [<00000000854bd16d>] cifs_get_smb_ses+0xae7/0x13c0 [<000000006cbc43d9>] mount_get_conns+0x7a/0x730 [<000000005922d816>] cifs_mount+0x103/0xd10 [<00000000e33def3b>] cifs_smb3_do_mount+0x1dd/0xc90 [<0000000078034979>] smb3_get_tree+0x1d5/0x300 [<000000004371f980>] vfs_get_tree+0x41/0xf0 [<00000000b670d8a7>] path_mount+0x9b3/0xdd0 [<000000005e839a7d>] __x64_sys_mount+0x190/0x1d0 [<000000009404c3b9>] do_syscall_64+0x35/0x80

When build ntlmssp negotiate blob failed, the session setup request should be freed.

Severity ?

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50372"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-17T15:15:36Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Fix memory leak when build ntlmssp negotiate blob failed\n\nThere is a memory leak when mount cifs:\n  unreferenced object 0xffff888166059600 (size 448):\n    comm \"mount.cifs\", pid 51391, jiffies 4295596373 (age 330.596s)\n    hex dump (first 32 bytes):\n      fe 53 4d 42 40 00 00 00 00 00 00 00 01 00 82 00  .SMB@...........\n      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    backtrace:\n      [\u003c0000000060609a61\u003e] mempool_alloc+0xe1/0x260\n      [\u003c00000000adfa6c63\u003e] cifs_small_buf_get+0x24/0x60\n      [\u003c00000000ebb404c7\u003e] __smb2_plain_req_init+0x32/0x460\n      [\u003c00000000bcf875b4\u003e] SMB2_sess_alloc_buffer+0xa4/0x3f0\n      [\u003c00000000753a2987\u003e] SMB2_sess_auth_rawntlmssp_negotiate+0xf5/0x480\n      [\u003c00000000f0c1f4f9\u003e] SMB2_sess_setup+0x253/0x410\n      [\u003c00000000a8b83303\u003e] cifs_setup_session+0x18f/0x4c0\n      [\u003c00000000854bd16d\u003e] cifs_get_smb_ses+0xae7/0x13c0\n      [\u003c000000006cbc43d9\u003e] mount_get_conns+0x7a/0x730\n      [\u003c000000005922d816\u003e] cifs_mount+0x103/0xd10\n      [\u003c00000000e33def3b\u003e] cifs_smb3_do_mount+0x1dd/0xc90\n      [\u003c0000000078034979\u003e] smb3_get_tree+0x1d5/0x300\n      [\u003c000000004371f980\u003e] vfs_get_tree+0x41/0xf0\n      [\u003c00000000b670d8a7\u003e] path_mount+0x9b3/0xdd0\n      [\u003c000000005e839a7d\u003e] __x64_sys_mount+0x190/0x1d0\n      [\u003c000000009404c3b9\u003e] do_syscall_64+0x35/0x80\n\nWhen build ntlmssp negotiate blob failed, the session setup request\nshould be freed.",
  "id": "GHSA-5wx2-vv79-wfg8",
  "modified": "2025-12-11T18:30:31Z",
  "published": "2025-09-17T15:30:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50372"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/30b2d7f8f13664655480d6af45f60270b3eb6736"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa5a70bdd5e565c8696fb04dfe18a4e8aff4695d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-50372 (GCVE-0-2022-50372)

Vulnerability from cvelistv5 – Published: 2025-09-17 14:56 – Updated: 2026-01-14 18:43

Title

cifs: Fix memory leak when build ntlmssp negotiate blob failed

Summary

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix memory leak when build ntlmssp negotiate blob failed There is a memory leak when mount cifs: unreferenced object 0xffff888166059600 (size 448): comm "mount.cifs", pid 51391, jiffies 4295596373 (age 330.596s) hex dump (first 32 bytes): fe 53 4d 42 40 00 00 00 00 00 00 00 01 00 82 00 .SMB@........... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<0000000060609a61>] mempool_alloc+0xe1/0x260 [<00000000adfa6c63>] cifs_small_buf_get+0x24/0x60 [<00000000ebb404c7>] __smb2_plain_req_init+0x32/0x460 [<00000000bcf875b4>] SMB2_sess_alloc_buffer+0xa4/0x3f0 [<00000000753a2987>] SMB2_sess_auth_rawntlmssp_negotiate+0xf5/0x480 [<00000000f0c1f4f9>] SMB2_sess_setup+0x253/0x410 [<00000000a8b83303>] cifs_setup_session+0x18f/0x4c0 [<00000000854bd16d>] cifs_get_smb_ses+0xae7/0x13c0 [<000000006cbc43d9>] mount_get_conns+0x7a/0x730 [<000000005922d816>] cifs_mount+0x103/0xd10 [<00000000e33def3b>] cifs_smb3_do_mount+0x1dd/0xc90 [<0000000078034979>] smb3_get_tree+0x1d5/0x300 [<000000004371f980>] vfs_get_tree+0x41/0xf0 [<00000000b670d8a7>] path_mount+0x9b3/0xdd0 [<000000005e839a7d>] __x64_sys_mount+0x190/0x1d0 [<000000009404c3b9>] do_syscall_64+0x35/0x80 When build ntlmssp negotiate blob failed, the session setup request should be freed.

Severity ?

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-401 - Missing Release of Memory after Effective Lifetime

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/fa5a70bdd5e565c86…
	https://git.kernel.org/stable/c/30b2d7f8f13664655…

Impacted products

Vendor

Product

Version

Linux

Affected: 49bd49f983b5026e4557d31c5d737d9657c4113e , < fa5a70bdd5e565c8696fb04dfe18a4e8aff4695d (git)
Affected: 49bd49f983b5026e4557d31c5d737d9657c4113e , < 30b2d7f8f13664655480d6af45f60270b3eb6736 (git)

Linux

Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 6.0.6 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-50372",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-14T18:36:31.603396Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-401",
                "description": "CWE-401 Missing Release of Memory after Effective Lifetime",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-14T18:43:00.339Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/cifs/smb2pdu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fa5a70bdd5e565c8696fb04dfe18a4e8aff4695d",
              "status": "affected",
              "version": "49bd49f983b5026e4557d31c5d737d9657c4113e",
              "versionType": "git"
            },
            {
              "lessThan": "30b2d7f8f13664655480d6af45f60270b3eb6736",
              "status": "affected",
              "version": "49bd49f983b5026e4557d31c5d737d9657c4113e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/cifs/smb2pdu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.16"
            },
            {
              "lessThan": "5.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.6",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Fix memory leak when build ntlmssp negotiate blob failed\n\nThere is a memory leak when mount cifs:\n  unreferenced object 0xffff888166059600 (size 448):\n    comm \"mount.cifs\", pid 51391, jiffies 4295596373 (age 330.596s)\n    hex dump (first 32 bytes):\n      fe 53 4d 42 40 00 00 00 00 00 00 00 01 00 82 00  .SMB@...........\n      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    backtrace:\n      [\u003c0000000060609a61\u003e] mempool_alloc+0xe1/0x260\n      [\u003c00000000adfa6c63\u003e] cifs_small_buf_get+0x24/0x60\n      [\u003c00000000ebb404c7\u003e] __smb2_plain_req_init+0x32/0x460\n      [\u003c00000000bcf875b4\u003e] SMB2_sess_alloc_buffer+0xa4/0x3f0\n      [\u003c00000000753a2987\u003e] SMB2_sess_auth_rawntlmssp_negotiate+0xf5/0x480\n      [\u003c00000000f0c1f4f9\u003e] SMB2_sess_setup+0x253/0x410\n      [\u003c00000000a8b83303\u003e] cifs_setup_session+0x18f/0x4c0\n      [\u003c00000000854bd16d\u003e] cifs_get_smb_ses+0xae7/0x13c0\n      [\u003c000000006cbc43d9\u003e] mount_get_conns+0x7a/0x730\n      [\u003c000000005922d816\u003e] cifs_mount+0x103/0xd10\n      [\u003c00000000e33def3b\u003e] cifs_smb3_do_mount+0x1dd/0xc90\n      [\u003c0000000078034979\u003e] smb3_get_tree+0x1d5/0x300\n      [\u003c000000004371f980\u003e] vfs_get_tree+0x41/0xf0\n      [\u003c00000000b670d8a7\u003e] path_mount+0x9b3/0xdd0\n      [\u003c000000005e839a7d\u003e] __x64_sys_mount+0x190/0x1d0\n      [\u003c000000009404c3b9\u003e] do_syscall_64+0x35/0x80\n\nWhen build ntlmssp negotiate blob failed, the session setup request\nshould be freed."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-17T14:56:27.577Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fa5a70bdd5e565c8696fb04dfe18a4e8aff4695d"
        },
        {
          "url": "https://git.kernel.org/stable/c/30b2d7f8f13664655480d6af45f60270b3eb6736"
        }
      ],
      "title": "cifs: Fix memory leak when build ntlmssp negotiate blob failed",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50372",
    "datePublished": "2025-09-17T14:56:27.577Z",
    "dateReserved": "2025-09-17T14:53:06.995Z",
    "dateUpdated": "2026-01-14T18:43:00.339Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

Action not permitted

GHSA-5WX2-VV79-WFG8

CVE-2022-50372 (GCVE-0-2022-50372)

Tags

Sightings

Nomenclature