CVE-2026-80897 (GCVE-0-2026-80897)
Vulnerability from cvelistv5
Published
2026-09-04 17:11
Modified
2026-10-21 12:47
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: netfs: release readahead folios on iterator preparation failure netfs_prepare_read_iterator() batches readahead folios in put_batch so that the folio references can be dropped after the I/O iterator has been prepared. If rolling_buffer_load_from_ra() fails after earlier folios have been batched, the function returns immediately and leaves those references held. Release the batch before returning the error.
References
Impacted products
Vendor Product Version
Linux Linux Version: e0186fa7436e55db10cecc2308749e2a877269a5
Version: 06fa229ceb36898e68022b5654c017d2c6582d7d
Version: 06fa229ceb36898e68022b5654c017d2c6582d7d
Version: 06fa229ceb36898e68022b5654c017d2c6582d7d
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/netfs/buffered_read.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9ef7c3c5cf771286f187aed199dac0972404cc0f",
              "status": "affected",
              "version": "e0186fa7436e55db10cecc2308749e2a877269a5",
              "versionType": "git"
            },
            {
              "lessThan": "2c148a31ca01fc160aceec777bbc0041b0d0b8bd",
              "status": "affected",
              "version": "06fa229ceb36898e68022b5654c017d2c6582d7d",
              "versionType": "git"
            },
            {
              "lessThan": "935e7b74bb2368f215cf8c2ad4bff60ee4e7589e",
              "status": "affected",
              "version": "06fa229ceb36898e68022b5654c017d2c6582d7d",
              "versionType": "git"
            },
            {
              "lessThan": "87eb3d272dcbcbbfe5c1576c10e5dc72810cf1f6",
              "status": "affected",
              "version": "06fa229ceb36898e68022b5654c017d2c6582d7d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/netfs/buffered_read.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "lessThan": "6.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.44",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.8",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: release readahead folios on iterator preparation failure\n\nnetfs_prepare_read_iterator() batches readahead folios in put_batch so that\nthe folio references can be dropped after the I/O iterator has been\nprepared.\n\nIf rolling_buffer_load_from_ra() fails after earlier folios have been\nbatched, the function returns immediately and leaves those references held.\nRelease the batch before returning the error."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T12:47:12.430Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9ef7c3c5cf771286f187aed199dac0972404cc0f"
        },
        {
          "url": "https://git.kernel.org/stable/c/2c148a31ca01fc160aceec777bbc0041b0d0b8bd"
        },
        {
          "url": "https://git.kernel.org/stable/c/935e7b74bb2368f215cf8c2ad4bff60ee4e7589e"
        },
        {
          "url": "https://git.kernel.org/stable/c/87eb3d272dcbcbbfe5c1576c10e5dc72810cf1f6"
        }
      ],
      "title": "netfs: release readahead folios on iterator preparation failure",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80897",
    "datePublished": "2026-09-04T17:11:12.499Z",
    "dateReserved": "2026-08-26T14:34:25.800Z",
    "dateUpdated": "2026-10-21T12:47:12.430Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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