Vulnerability-Lookup

GHSA-F5HQ-62QQ-FGRW

Vulnerability from github – Published: 2026-04-03 18:31 – Updated: 2026-04-23 21:31

Details

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.

Severity ?

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23434"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-03T16:16:24Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-f5hq-62qq-fgrw",
  "modified": "2026-04-23T21:31:18Z",
  "published": "2026-04-03T18:31:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23434"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/28ea836cc44cb8b89c1c174707ead0c1133c60e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5fd5c078af23cb353507aa522e09d557d7eaef04"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a80291e577b44593a724d6cd64c14337c78f194d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bab2bc6e850a697a23b9e5f0e21bb8c187615e95"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce5229e78078e437704157eb542f43a6f83b429b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f25446e2c28939753d3b62d34dfda49952b2557d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f71ce0ae5aefe39dd5b2f996c0e08550d2153ad2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fe4a73c3dd48308149d57a10c2761e1d36ced7ba"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-23434 (GCVE-0-2026-23434)

Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-27 14:02

Title

mtd: rawnand: serialize lock/unlock against other NAND operations

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.

Severity ?

7.1 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/28ea836cc44cb8b89…
	https://git.kernel.org/stable/c/fe4a73c3dd4830814…
	https://git.kernel.org/stable/c/ce5229e78078e4377…
	https://git.kernel.org/stable/c/a80291e577b44593a…
	https://git.kernel.org/stable/c/f71ce0ae5aefe39dd…
	https://git.kernel.org/stable/c/5fd5c078af23cb353…
	https://git.kernel.org/stable/c/f25446e2c28939753…
	https://git.kernel.org/stable/c/bab2bc6e850a697a2…

Impacted products

Vendor

Product

Version

Linux

Affected: 92270086b7e5ada7ab381c06cc3da2e95ed17088 , < 28ea836cc44cb8b89c1c174707ead0c1133c60e9 (git)
Affected: 92270086b7e5ada7ab381c06cc3da2e95ed17088 , < fe4a73c3dd48308149d57a10c2761e1d36ced7ba (git)
Affected: 92270086b7e5ada7ab381c06cc3da2e95ed17088 , < ce5229e78078e437704157eb542f43a6f83b429b (git)
Affected: 92270086b7e5ada7ab381c06cc3da2e95ed17088 , < a80291e577b44593a724d6cd64c14337c78f194d (git)
Affected: 92270086b7e5ada7ab381c06cc3da2e95ed17088 , < f71ce0ae5aefe39dd5b2f996c0e08550d2153ad2 (git)
Affected: 92270086b7e5ada7ab381c06cc3da2e95ed17088 , < 5fd5c078af23cb353507aa522e09d557d7eaef04 (git)
Affected: 92270086b7e5ada7ab381c06cc3da2e95ed17088 , < f25446e2c28939753d3b62d34dfda49952b2557d (git)
Affected: 92270086b7e5ada7ab381c06cc3da2e95ed17088 , < bab2bc6e850a697a23b9e5f0e21bb8c187615e95 (git)

Linux

Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.78 , ≤ 6.12.* (semver)
Unaffected: 6.18.20 , ≤ 6.18.* (semver)
Unaffected: 6.19.10 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/mtd/nand/raw/nand_base.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "28ea836cc44cb8b89c1c174707ead0c1133c60e9",
              "status": "affected",
              "version": "92270086b7e5ada7ab381c06cc3da2e95ed17088",
              "versionType": "git"
            },
            {
              "lessThan": "fe4a73c3dd48308149d57a10c2761e1d36ced7ba",
              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "ce5229e78078e437704157eb542f43a6f83b429b",
              "status": "affected",
              "version": "92270086b7e5ada7ab381c06cc3da2e95ed17088",
              "versionType": "git"
            },
            {
              "lessThan": "a80291e577b44593a724d6cd64c14337c78f194d",
              "status": "affected",
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              "versionType": "git"
            },
            {
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            },
            {
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              "versionType": "git"
            },
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
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          "programFiles": [
            "drivers/mtd/nand/raw/nand_base.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.7"
            },
            {
              "lessThan": "5.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.253",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.203",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.167",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.130",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.78",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.20",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.253",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.203",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.167",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.130",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.78",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.20",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.10",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "metrics": [
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
          }
        }
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      "providerMetadata": {
        "dateUpdated": "2026-04-27T14:02:23.065Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/28ea836cc44cb8b89c1c174707ead0c1133c60e9"
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        {
          "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"
        },
        {
          "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"
      }
    }
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  "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": "2026-04-27T14:02:23.065Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-F5HQ-62QQ-FGRW

CVE-2026-23434 (GCVE-0-2026-23434)

Tags

Sightings

Nomenclature