CVE-2026-98445

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:

xfs: don't let memory failures leak blocks and kill repairs

LOLLM complains that a memory allocation failure in xrep_newbt_add_blocks results in online repair leaking blocks that were previously allocated to write a new btree, but the problem is worse than that -- a limitation of the codebase is that the callers cannot undo the transaction /and/ return the error -- either you undo all changes and commit the transaction, or you error out and the filesystem goes down.

However, the new btree space reservation object isn't that big (~48 bytes). Let's just do a NOFAIL allocation and the problem goes away.

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 4 references

Raw JSON (NVD)

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{
  "id": "CVE-2026-98445",
  "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": "be408417630427984a1fddd069f30b245793234c",
              "lessThan": "3380151cf0ce8ad0c1d356fed51e4b69e1d28e50",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "be408417630427984a1fddd069f30b245793234c",
              "lessThan": "b15c79fca28060fd9c7e77f2c3ebc4ba023974e8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "be408417630427984a1fddd069f30b245793234c",
              "lessThan": "0e0d3372a84029da1768c7a4c4601484af5b58a2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "be408417630427984a1fddd069f30b245793234c",
              "lessThan": "ab1c416d2377cdc16123ef521aac4da1c468c3d4",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/xfs/scrub/newbt.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.8",
              "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": "7.2.9",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/xfs/scrub/newbt.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-18T16:16:54.837",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0e0d3372a84029da1768c7a4c4601484af5b58a2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3380151cf0ce8ad0c1d356fed51e4b69e1d28e50",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ab1c416d2377cdc16123ef521aac4da1c468c3d4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b15c79fca28060fd9c7e77f2c3ebc4ba023974e8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: don't let memory failures leak blocks and kill repairs\n\nLOLLM complains that a memory allocation failure in\nxrep_newbt_add_blocks results in online repair leaking blocks that were\npreviously allocated to write a new btree, but the problem is worse than\nthat -- a limitation of the codebase is that the callers cannot undo the\ntransaction /and/ return the error -- either you undo all changes and\ncommit the transaction, or you error out and the filesystem goes down.\n\nHowever, the new btree space reservation object isn't that big (~48\nbytes).  Let's just do a NOFAIL allocation and the problem goes away."
    }
  ],
  "lastModified": "2026-10-19T10:18:53.613",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}