Vulnerability-Lookup

CVE-2026-98169 (GCVE-0-2026-98169)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:44 – Updated: 2026-10-07 06:49

Title

smb: client: fix potential OOB read in smb3_enum_snapshots()

Summary

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential OOB read in smb3_enum_snapshots() If snapshot_array_size is smaller than GMT_TOKEN_SIZE, smb3_enum_snapshots() sets ret_data_len to sizeof(struct smb_snapshot_array) without verifying the actual length of the server's reply. Because SMB2_ioctl() places no lower bound on the server-supplied OutputCount and allocates retbuf to exactly that length, a short reply results in ret_data_len exceeding the size of retbuf. The subsequent copy_to_user() then reads past the end of retbuf, leaking adjacent slab memory to userspace. The subsequent clamp check is ineffective as it only reduces ret_data_len. Fix this by rejecting replies shorter than sizeof(struct smb_snapshot_array) with -EIO. Note that the bound is set to the 12-byte struct size rather than the 16-byte MIN_SNAPSHOT_ARRAY_SIZE defined in MS-SMB2 3.3.5.15.1, because 12 bytes is exactly what copy_to_user() attempts to read.

Severity

7.1 (High)


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

Assigner

Linux mitre root Scorecard

References

6 references

URL	Tags
https://git.kernel.org/stable/c/15a221c734b9d044a…
https://git.kernel.org/stable/c/74995ee8305a7c4d7…
https://git.kernel.org/stable/c/210f0f1f67817e7d2…
https://git.kernel.org/stable/c/1cdf0d304d820fb13…
https://git.kernel.org/stable/c/dbe452a905dfe2804…
https://git.kernel.org/stable/c/4775c3b7a597907e0…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: e02789a53d71334b067ad72eee5d4e88a0158083 , < 15a221c734b9d044ab769e7e3606b2cab96fb65a (git) Affected: e02789a53d71334b067ad72eee5d4e88a0158083 , < 74995ee8305a7c4d76ee70d6acd996a75eda3c03 (git) Affected: e02789a53d71334b067ad72eee5d4e88a0158083 , < 210f0f1f67817e7d2348b86b5115a9b85ef5c98b (git) Affected: e02789a53d71334b067ad72eee5d4e88a0158083 , < 1cdf0d304d820fb13bf0faf532c3459600f9ea43 (git) Affected: e02789a53d71334b067ad72eee5d4e88a0158083 , < dbe452a905dfe2804647530a9ff3d7e3826ed04d (git) Affected: e02789a53d71334b067ad72eee5d4e88a0158083 , < 4775c3b7a597907e0b97556c7986fda238a377ae (git) Affected: a94703ff8e3647f8a9a3a92a468450299a7b77e9 (git) Affected: 82a856f527334ffd69aae26e7dd9e03b19c4a520 (git) Affected: 25b981bfe192fd208ba04c81f4aa30ffb5141660 (git) Affected: 4.9.125 , < 4.10 (semver) Affected: 4.14.68 , < 4.15 (semver) Affected: 4.18.6 , < 4.19 (semver)	guessed
Linux	Linux	Affected: 4.19 Unaffected: 0 , < 4.19 (semver) Unaffected: 6.1.189 , ≤ 6.1.* (semver) Unaffected: 6.6.158 , ≤ 6.6.* (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)	guessed

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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/smb2ops.c"
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              "status": "unaffected",
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            },
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              "status": "unaffected",
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              "status": "unaffected",
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        {
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix potential OOB read in smb3_enum_snapshots()\n\nIf snapshot_array_size is smaller than GMT_TOKEN_SIZE,\nsmb3_enum_snapshots() sets ret_data_len to\nsizeof(struct smb_snapshot_array) without verifying the actual length\nof the server\u0027s reply.\n\nBecause SMB2_ioctl() places no lower bound on the server-supplied\nOutputCount and allocates retbuf to exactly that length, a short reply\nresults in ret_data_len exceeding the size of retbuf. The subsequent\ncopy_to_user() then reads past the end of retbuf, leaking adjacent slab\nmemory to userspace.  The subsequent clamp check is ineffective as it\nonly reduces ret_data_len.\n\nFix this by rejecting replies shorter than\nsizeof(struct smb_snapshot_array) with -EIO. Note that the bound is set\nto the 12-byte struct size rather than the 16-byte\nMIN_SNAPSHOT_ARRAY_SIZE defined in MS-SMB2 3.3.5.15.1, because 12 bytes\nis exactly what copy_to_user() attempts to read."
        }
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            "version": "3.1"
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              "value": "AV:N - The bad input is the OutputCount field of the SMB2 IOCTL response to FSCTL_SRV_ENUMERATE_SNAPSHOTS, sent by the SMB server over TCP. SMB2_ioctl() rejects only 0 or oversized values and kmemdup()s 1-11 bytes, and smb3_enum_snapshots() then copies 12 bytes from that buffer.\nAC:L - A server that always answers the snapshot FSCTL with OutputCount 1-11 hits the bug every time a caller passes snapshot_array_size \u003c GMT_TOKEN_SIZE, which is the normal first sizing query. No race or memory layout outside the server\u0027s control is needed.\nPR:N - The attacker is the SMB server answering the client\u0027s request. It needs no account or privilege on the client to send a short IOCTL response.\nUI:R - A victim has to mount the attacker\u0027s share, and a process on the client has to issue ioctl(CIFS_ENUMERATE_SNAPSHOTS) on a file there to make smb3_enum_snapshots() run.\nS:U - The out-of-bounds read and the crash both stay inside the client kernel. No VM, IOMMU or other security boundary is crossed.\nC:L - copy_to_user() reads at most 11 bytes past the kmemdup\u0027d retbuf, from the next kmalloc-8 object or the unused tail of a kmalloc-16 object. The leak is small and fixed in size, and it goes to the ioctl caller, not back over the wire.\nI:N - The defect is a read only: retbuf is copied out to user space, and no kernel memory is written out of bounds.\nA:H - With CONFIG_HARDENED_USERCOPY (common on distro and Android kernels), a 12-byte copy_to_user() from a kmalloc-8 retbuf (OutputCount 1-8) fails the heap object check. usercopy_abort() then calls BUG() and the kernel oopses, or panics if panic_on_oops is set. The server can trigger this on every enumeration."
            }
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        {
          "url": "https://git.kernel.org/stable/c/4775c3b7a597907e0b97556c7986fda238a377ae"
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      "title": "smb: client: fix potential OOB read in smb3_enum_snapshots()",
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    "cveId": "CVE-2026-98169",
    "datePublished": "2026-10-06T08:44:14.339Z",
    "dateReserved": "2026-09-25T10:25:14.322Z",
    "dateUpdated": "2026-10-07T06:49:19.327Z",
    "state": "PUBLISHED"
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          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix potential OOB read in smb3_enum_snapshots()\n\nIf snapshot_array_size is smaller than GMT_TOKEN_SIZE,\nsmb3_enum_snapshots() sets ret_data_len to\nsizeof(struct smb_snapshot_array) without verifying the actual length\nof the server\u0027s reply.\n\nBecause SMB2_ioctl() places no lower bound on the server-supplied\nOutputCount and allocates retbuf to exactly that length, a short reply\nresults in ret_data_len exceeding the size of retbuf. The subsequent\ncopy_to_user() then reads past the end of retbuf, leaking adjacent slab\nmemory to userspace.  The subsequent clamp check is ineffective as it\nonly reduces ret_data_len.\n\nFix this by rejecting replies shorter than\nsizeof(struct smb_snapshot_array) with -EIO. Note that the bound is set\nto the 12-byte struct size rather than the 16-byte\nMIN_SNAPSHOT_ARRAY_SIZE defined in MS-SMB2 3.3.5.15.1, because 12 bytes\nis exactly what copy_to_user() attempts to read."
          }
        ],
        "id": "CVE-2026-98169",
        "lastModified": "2026-10-07T07:17:03.450",
        "metrics": {
          "cvssMetricV31": [
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              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.1,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "LOW",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                "version": "3.1"
              },
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              "impactScore": 4.2,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-06T09:17:58.480",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/15a221c734b9d044ab769e7e3606b2cab96fb65a"
          },
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            "url": "https://git.kernel.org/stable/c/4775c3b7a597907e0b97556c7986fda238a377ae"
          },
          {
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-07T07:19:06+00:00",
      "cve": "CVE-2026-98169",
      "id": "CVE-2026-98169",
      "initial_release_date": "2026-10-06T00:00:00+00:00",
      "product_status:known_affected": "235",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: smb: client: fix potential OOB read in smb3_enum_snapshots()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98169.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-10-07T00:01:07Z",
      "cve": "CVE-2026-98169",
      "id": "CVE-2026-98169",
      "initial_release_date": "2026-10-07T00:01:07Z",
      "product_status:known_affected": "341",
      "product_status:known_not_affected": "6",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98169",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-98169.json",
      "version": "2"
    }
  }
}

BELL-CVE-2026-98169 (CVE-2026-98169)

Vulnerability from osv_bellsoft – Published: 2026-10-07 06:05 – Updated: 2026-10-07 06:20 – Source website

References

URL

Type

https://docs.bell-sw.com/security/cves/CVE-2026-98169

ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Alpaquita:23",
        "name": "linux-lts",
        "purl": "pkg:apk/alpaquita/linux-lts?arch=source\u0026distro=23"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.1.182-r0"
            },
            {
              "fixed": "6.1.189-r0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Alpaquita:25",
        "name": "linux-lts",
        "purl": "pkg:apk/alpaquita/linux-lts?arch=source\u0026distro=25"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.12.111-r1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Alpaquita:stream",
        "name": "linux-lts",
        "purl": "pkg:apk/alpaquita/linux-lts?arch=source\u0026distro=stream"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.18.53-r0"
            },
            {
              "fixed": "6.18.55-r0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "id": "BELL-CVE-2026-98169",
  "modified": "2026-10-07T06:20:05.409981Z",
  "published": "2026-10-07T06:05:21.211354Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://docs.bell-sw.com/security/cves/CVE-2026-98169"
    }
  ],
  "schema_version": "1.7.4",
  "upstream": [
    "CVE-2026-98169"
  ]
}

FKIE_CVE-2026-98169

Vulnerability from fkie_nvd - Published: 2026-10-06 09:17 - Updated: 2026-10-07 07:17

Severity

7.1 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/15a221c734b9d044ab769e7e3606b2cab96fb65a
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1cdf0d304d820fb13bf0faf532c3459600f9ea43
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/210f0f1f67817e7d2348b86b5115a9b85ef5c98b
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4775c3b7a597907e0b97556c7986fda238a377ae
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/74995ee8305a7c4d76ee70d6acd996a75eda3c03
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/dbe452a905dfe2804647530a9ff3d7e3826ed04d

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/smb2ops.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "15a221c734b9d044ab769e7e3606b2cab96fb65a",
              "status": "affected",
              "version": "e02789a53d71334b067ad72eee5d4e88a0158083",
              "versionType": "git"
            },
            {
              "lessThan": "74995ee8305a7c4d76ee70d6acd996a75eda3c03",
              "status": "affected",
              "version": "e02789a53d71334b067ad72eee5d4e88a0158083",
              "versionType": "git"
            },
            {
              "lessThan": "210f0f1f67817e7d2348b86b5115a9b85ef5c98b",
              "status": "affected",
              "version": "e02789a53d71334b067ad72eee5d4e88a0158083",
              "versionType": "git"
            },
            {
              "lessThan": "1cdf0d304d820fb13bf0faf532c3459600f9ea43",
              "status": "affected",
              "version": "e02789a53d71334b067ad72eee5d4e88a0158083",
              "versionType": "git"
            },
            {
              "lessThan": "dbe452a905dfe2804647530a9ff3d7e3826ed04d",
              "status": "affected",
              "version": "e02789a53d71334b067ad72eee5d4e88a0158083",
              "versionType": "git"
            },
            {
              "lessThan": "4775c3b7a597907e0b97556c7986fda238a377ae",
              "status": "affected",
              "version": "e02789a53d71334b067ad72eee5d4e88a0158083",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a94703ff8e3647f8a9a3a92a468450299a7b77e9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "82a856f527334ffd69aae26e7dd9e03b19c4a520",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "25b981bfe192fd208ba04c81f4aa30ffb5141660",
              "versionType": "git"
            },
            {
              "lessThan": "4.10",
              "status": "affected",
              "version": "4.9.125",
              "versionType": "semver"
            },
            {
              "lessThan": "4.15",
              "status": "affected",
              "version": "4.14.68",
              "versionType": "semver"
            },
            {
              "lessThan": "4.19",
              "status": "affected",
              "version": "4.18.6",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/smb2ops.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.19"
            },
            {
              "lessThan": "4.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix potential OOB read in smb3_enum_snapshots()\n\nIf snapshot_array_size is smaller than GMT_TOKEN_SIZE,\nsmb3_enum_snapshots() sets ret_data_len to\nsizeof(struct smb_snapshot_array) without verifying the actual length\nof the server\u0027s reply.\n\nBecause SMB2_ioctl() places no lower bound on the server-supplied\nOutputCount and allocates retbuf to exactly that length, a short reply\nresults in ret_data_len exceeding the size of retbuf. The subsequent\ncopy_to_user() then reads past the end of retbuf, leaking adjacent slab\nmemory to userspace.  The subsequent clamp check is ineffective as it\nonly reduces ret_data_len.\n\nFix this by rejecting replies shorter than\nsizeof(struct smb_snapshot_array) with -EIO. Note that the bound is set\nto the 12-byte struct size rather than the 16-byte\nMIN_SNAPSHOT_ARRAY_SIZE defined in MS-SMB2 3.3.5.15.1, because 12 bytes\nis exactly what copy_to_user() attempts to read."
    }
  ],
  "id": "CVE-2026-98169",
  "lastModified": "2026-10-07T07:17:03.450",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.2,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-10-06T09:17:58.480",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/15a221c734b9d044ab769e7e3606b2cab96fb65a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1cdf0d304d820fb13bf0faf532c3459600f9ea43"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/210f0f1f67817e7d2348b86b5115a9b85ef5c98b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4775c3b7a597907e0b97556c7986fda238a377ae"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/74995ee8305a7c4d76ee70d6acd996a75eda3c03"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dbe452a905dfe2804647530a9ff3d7e3826ed04d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-2C6M-5VJC-XQC6

Vulnerability from github – Published: 2026-10-06 09:31 – Updated: 2026-10-07 09:32

Details

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

smb: client: fix potential OOB read in smb3_enum_snapshots()

If snapshot_array_size is smaller than GMT_TOKEN_SIZE, smb3_enum_snapshots() sets ret_data_len to sizeof(struct smb_snapshot_array) without verifying the actual length of the server's reply.

Because SMB2_ioctl() places no lower bound on the server-supplied OutputCount and allocates retbuf to exactly that length, a short reply results in ret_data_len exceeding the size of retbuf. The subsequent copy_to_user() then reads past the end of retbuf, leaking adjacent slab memory to userspace. The subsequent clamp check is ineffective as it only reduces ret_data_len.

Fix this by rejecting replies shorter than sizeof(struct smb_snapshot_array) with -EIO. Note that the bound is set to the 12-byte struct size rather than the 16-byte MIN_SNAPSHOT_ARRAY_SIZE defined in MS-SMB2 3.3.5.15.1, because 12 bytes is exactly what copy_to_user() attempts to read.

Severity

7.1 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-98169"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-06T09:17:58Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix potential OOB read in smb3_enum_snapshots()\n\nIf snapshot_array_size is smaller than GMT_TOKEN_SIZE,\nsmb3_enum_snapshots() sets ret_data_len to\nsizeof(struct smb_snapshot_array) without verifying the actual length\nof the server\u0027s reply.\n\nBecause SMB2_ioctl() places no lower bound on the server-supplied\nOutputCount and allocates retbuf to exactly that length, a short reply\nresults in ret_data_len exceeding the size of retbuf. The subsequent\ncopy_to_user() then reads past the end of retbuf, leaking adjacent slab\nmemory to userspace.  The subsequent clamp check is ineffective as it\nonly reduces ret_data_len.\n\nFix this by rejecting replies shorter than\nsizeof(struct smb_snapshot_array) with -EIO. Note that the bound is set\nto the 12-byte struct size rather than the 16-byte\nMIN_SNAPSHOT_ARRAY_SIZE defined in MS-SMB2 3.3.5.15.1, because 12 bytes\nis exactly what copy_to_user() attempts to read.",
  "id": "GHSA-2c6m-5vjc-xqc6",
  "modified": "2026-10-07T09:32:12Z",
  "published": "2026-10-06T09:31:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98169"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/15a221c734b9d044ab769e7e3606b2cab96fb65a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1cdf0d304d820fb13bf0faf532c3459600f9ea43"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/210f0f1f67817e7d2348b86b5115a9b85ef5c98b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4775c3b7a597907e0b97556c7986fda238a377ae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/74995ee8305a7c4d76ee70d6acd996a75eda3c03"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dbe452a905dfe2804647530a9ff3d7e3826ed04d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

MSRC_CVE-2026-98169

Vulnerability from csaf_microsoft - Published: 2026-10-07 01:07 - Updated: 2026-10-07 01:07

Summary

smb: client: fix potential OOB read in smb3_enum_snapshots()

Scope

1 vulnerability in this advisory, including CVE-2026-98169.

CVE-2026-98169

Known affected: 1 product

Open the full advisory

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-98169 (GCVE-0-2026-98169)

BELL-CVE-2026-98169 (CVE-2026-98169)

FKIE_CVE-2026-98169

GHSA-2C6M-5VJC-XQC6

MSRC_CVE-2026-98169

Tags

Sightings

Nomenclature

Related by attack behaviour