CVE-2026-98453

Status: ReceivedUnscored—

Severity—Unscored

Exploitation probability0.17 %higher than 6% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

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

smb: client: close handle after create-context parsing failure

SMB2_open() accounts a successful CREATE response as a remote open before parsing its create contexts. If smb2_parse_contexts() rejects malformed context data, SMB2_open() returns without closing the handle, leaving the server-side handle open and num_remote_opens elevated.

Close the handle after a post-CREATE context parsing failure so the error path releases the remote resource and balances the open count.

CVSS

NVD hasn't assigned a CVSS score to this CVE (common since the April 2026 policy change).

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.17 %
Percentile among all scored CVEs: 6
Score date: 10/21/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Linux — Linux Kernel^AI

References

Show 5 references

Raw JSON (NVD)

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{
  "id": "CVE-2026-98453",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "17a0f64cc02d4972e21c733d9f21d1c512963afa",
              "lessThan": "eaa97a196a107d4ef8775df2248181624151812e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "af1689a9b7701d9907dfc84d2a4b57c4bc907144",
              "lessThan": "80c67cc71d32ccafc89a29b669243b40d81b930f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "af1689a9b7701d9907dfc84d2a4b57c4bc907144",
              "lessThan": "f09875ff901e933e7b22c913daf51d21e9d93a45",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "af1689a9b7701d9907dfc84d2a4b57c4bc907144",
              "lessThan": "cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb",
              "versionType": "git"
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            {
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              "lessThan": "566820af017e81497fb5e9d3ad6e7ffe2828bc8b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6726429c18c62dbf5e96ebbd522f262e016553fb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "13fb0fc4917621f3dfa285a27eaf7151d770b5e5",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "890bc4fac3c0973a49cac35f634579bebba7fe48",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1ae3c59355dc9882e09c020afe8ffbd895ad0f29",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6.6.8",
              "lessThan": "6.6.160",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "5.4.277",
              "lessThan": "5.5",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "5.10.211",
              "lessThan": "5.11",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "5.15.150",
              "lessThan": "5.16",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.1.79",
              "lessThan": "6.2",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "fs/smb/client/smb2pdu.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.7"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.7",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.9",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/smb/client/smb2pdu.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-18T16:16:55.647",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/566820af017e81497fb5e9d3ad6e7ffe2828bc8b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/80c67cc71d32ccafc89a29b669243b40d81b930f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/eaa97a196a107d4ef8775df2248181624151812e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f09875ff901e933e7b22c913daf51d21e9d93a45",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: close handle after create-context parsing failure\n\nSMB2_open() accounts a successful CREATE response as a remote open before\nparsing its create contexts.  If smb2_parse_contexts() rejects malformed\ncontext data, SMB2_open() returns without closing the handle, leaving the\nserver-side handle open and num_remote_opens elevated.\n\nClose the handle after a post-CREATE context parsing failure so the error\npath releases the remote resource and balances the open count."
    }
  ],
  "lastModified": "2026-10-21T13:21:30.693",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}