CVE-2026-98445 (GCVE-0-2026-98445)
Vulnerability from cvelistv5
Published
2026-10-18 15:14
Modified
2026-10-19 09:19
Severity ?
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: be408417630427984a1fddd069f30b245793234c
Version: be408417630427984a1fddd069f30b245793234c
Version: be408417630427984a1fddd069f30b245793234c
Version: be408417630427984a1fddd069f30b245793234c
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/xfs/scrub/newbt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
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            }
          ]
        },
        {
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "lessThan": "6.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver"
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            {
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              "version": "7.2.9",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.113",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.56",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "7.2.9",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: don\u0027t 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\u0027t that big (~48\nbytes).  Let\u0027s just do a NOFAIL allocation and the problem goes away."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:19:40.826Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3380151cf0ce8ad0c1d356fed51e4b69e1d28e50"
        },
        {
          "url": "https://git.kernel.org/stable/c/b15c79fca28060fd9c7e77f2c3ebc4ba023974e8"
        },
        {
          "url": "https://git.kernel.org/stable/c/0e0d3372a84029da1768c7a4c4601484af5b58a2"
        },
        {
          "url": "https://git.kernel.org/stable/c/ab1c416d2377cdc16123ef521aac4da1c468c3d4"
        }
      ],
      "title": "xfs: don\u0027t let memory failures leak blocks and kill repairs",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98445",
    "datePublished": "2026-10-18T15:14:55.754Z",
    "dateReserved": "2026-09-25T10:25:14.349Z",
    "dateUpdated": "2026-10-19T09:19:40.826Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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