CVE-2026-23434 (GCVE-0-2026-23434)
Vulnerability from cvelistv5
Published
2026-04-03 15:15
Modified
2026-04-18 08:58
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: serialize lock/unlock against other NAND operations nand_lock() and nand_unlock() call into chip->ops.lock_area/unlock_area without holding the NAND device lock. On controllers that implement SET_FEATURES via multiple low-level PIO commands, these can race with concurrent UBI/UBIFS background erase/write operations that hold the device lock, resulting in cmd_pending conflicts on the NAND controller. Add nand_get_device()/nand_release_device() around the lock/unlock operations to serialize them against all other NAND controller access.
References
Impacted products
Vendor Product Version
Linux Linux Version: 92270086b7e5ada7ab381c06cc3da2e95ed17088
Version: 92270086b7e5ada7ab381c06cc3da2e95ed17088
Version: 92270086b7e5ada7ab381c06cc3da2e95ed17088
Version: 92270086b7e5ada7ab381c06cc3da2e95ed17088
Version: 92270086b7e5ada7ab381c06cc3da2e95ed17088
Version: 92270086b7e5ada7ab381c06cc3da2e95ed17088
Version: 92270086b7e5ada7ab381c06cc3da2e95ed17088
Version: 92270086b7e5ada7ab381c06cc3da2e95ed17088
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/mtd/nand/raw/nand_base.c"
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          "vendor": "Linux",
          "versions": [
            {
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              "version": "5.7"
            },
            {
              "lessThan": "5.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "5.10.253",
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            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.203",
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            },
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              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.167",
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              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.130",
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            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.78",
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            },
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              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.20",
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            },
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              "status": "unaffected",
              "version": "6.19.10",
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            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "negate": false,
              "operator": "OR"
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: rawnand: serialize lock/unlock against other NAND operations\n\nnand_lock() and nand_unlock() call into chip-\u003eops.lock_area/unlock_area\nwithout holding the NAND device lock. On controllers that implement\nSET_FEATURES via multiple low-level PIO commands, these can race with\nconcurrent UBI/UBIFS background erase/write operations that hold the\ndevice lock, resulting in cmd_pending conflicts on the NAND controller.\n\nAdd nand_get_device()/nand_release_device() around the lock/unlock\noperations to serialize them against all other NAND controller access."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-18T08:58:52.810Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/28ea836cc44cb8b89c1c174707ead0c1133c60e9"
        },
        {
          "url": "https://git.kernel.org/stable/c/fe4a73c3dd48308149d57a10c2761e1d36ced7ba"
        },
        {
          "url": "https://git.kernel.org/stable/c/ce5229e78078e437704157eb542f43a6f83b429b"
        },
        {
          "url": "https://git.kernel.org/stable/c/a80291e577b44593a724d6cd64c14337c78f194d"
        },
        {
          "url": "https://git.kernel.org/stable/c/f71ce0ae5aefe39dd5b2f996c0e08550d2153ad2"
        },
        {
          "url": "https://git.kernel.org/stable/c/5fd5c078af23cb353507aa522e09d557d7eaef04"
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          "url": "https://git.kernel.org/stable/c/f25446e2c28939753d3b62d34dfda49952b2557d"
        },
        {
          "url": "https://git.kernel.org/stable/c/bab2bc6e850a697a23b9e5f0e21bb8c187615e95"
        }
      ],
      "title": "mtd: rawnand: serialize lock/unlock against other NAND operations",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23434",
    "datePublished": "2026-04-03T15:15:19.450Z",
    "dateReserved": "2026-01-13T15:37:46.016Z",
    "dateUpdated": "2026-04-18T08:58:52.810Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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