CVE-2026-98726

Status: ReceivedUnscored—

Severity—Unscored

Exploitation probability0.20 %higher than 9% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

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

nvme-multipath: fix underflow in ANA log bounds checks

The number of ANA groups advertised through Identify Controller sizes the ANA log buffer. The ANA log header and group descriptors independently supply the number of groups and namespace IDs to parse.

Both bounds checks subtract an untrusted object size from ana_log_size before comparing the current offset. If the object is larger than the buffer, the size_t subtraction underflows and lets the parser read beyond ana_log_buf.

Check the current offset before the first subtraction and compare each object size with the remaining buffer instead. This rejects inconsistent ANA data before dereferencing a truncated group descriptor or walking an oversized namespace ID array.

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: 0.20 %
Percentile among all scored CVEs: 9
Score date: 10/20/2026

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 4 references

Raw JSON (NVD)

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{
  "id": "CVE-2026-98726",
  "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": "0d0b660f214dc4905db7b6bc998bad0c16dfb1ba",
              "lessThan": "03a0c21f0fd7a872953aae5714303d8f38d1e567",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0d0b660f214dc4905db7b6bc998bad0c16dfb1ba",
              "lessThan": "49e8a3224c91fd5fbf22f4adcca6c8209cfdd6fe",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0d0b660f214dc4905db7b6bc998bad0c16dfb1ba",
              "lessThan": "e5cdb0c0a51e8ff49914ae16ef5360010c40cc85",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0d0b660f214dc4905db7b6bc998bad0c16dfb1ba",
              "lessThan": "63fa2d9c9c37020bd2703fe2a6a38027b5abeb15",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/nvme/host/multipath.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.19"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.19",
              "versionType": "semver"
            },
            {
              "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": "7.2.10",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/nvme/host/multipath.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-18T16:17:26.237",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/03a0c21f0fd7a872953aae5714303d8f38d1e567",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/49e8a3224c91fd5fbf22f4adcca6c8209cfdd6fe",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/63fa2d9c9c37020bd2703fe2a6a38027b5abeb15",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e5cdb0c0a51e8ff49914ae16ef5360010c40cc85",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-multipath: fix underflow in ANA log bounds checks\n\nThe number of ANA groups advertised through Identify Controller sizes the\nANA log buffer. The ANA log header and group descriptors independently\nsupply the number of groups and namespace IDs to parse.\n\nBoth bounds checks subtract an untrusted object size from ana_log_size\nbefore comparing the current offset. If the object is larger than the\nbuffer, the size_t subtraction underflows and lets the parser read beyond\nana_log_buf.\n\nCheck the current offset before the first subtraction and compare each\nobject size with the remaining buffer instead. This rejects inconsistent\nANA data before dereferencing a truncated group descriptor or walking an\noversized namespace ID array."
    }
  ],
  "lastModified": "2026-10-19T10:19:36.777",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}