CVE-2023-52449 (GCVE-0-2023-52449)

Vulnerability from cvelistv5 – Published: 2024-02-22 16:21 – Updated: 2025-05-04 07:36
VLAI?
Title
mtd: Fix gluebi NULL pointer dereference caused by ftl notifier
Summary
In the Linux kernel, the following vulnerability has been resolved: mtd: Fix gluebi NULL pointer dereference caused by ftl notifier If both ftl.ko and gluebi.ko are loaded, the notifier of ftl triggers NULL pointer dereference when trying to access ‘gluebi->desc’ in gluebi_read(). ubi_gluebi_init ubi_register_volume_notifier ubi_enumerate_volumes ubi_notify_all gluebi_notify nb->notifier_call() gluebi_create mtd_device_register mtd_device_parse_register add_mtd_device blktrans_notify_add not->add() ftl_add_mtd tr->add_mtd() scan_header mtd_read mtd_read_oob mtd_read_oob_std gluebi_read mtd->read() gluebi->desc - NULL Detailed reproduction information available at the Link [1], In the normal case, obtain gluebi->desc in the gluebi_get_device(), and access gluebi->desc in the gluebi_read(). However, gluebi_get_device() is not executed in advance in the ftl_add_mtd() process, which leads to NULL pointer dereference. The solution for the gluebi module is to run jffs2 on the UBI volume without considering working with ftl or mtdblock [2]. Therefore, this problem can be avoided by preventing gluebi from creating the mtdblock device after creating mtd partition of the type MTD_UBIVOLUME.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba , < aeba358bcc8ffddf9b4a9bd0e5ec9eb338d46022 (git)
Affected: 2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba , < 1bf4fe14e97cda621522eb2f28b0a4e87c5b0745 (git)
Affected: 2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba , < 001a3f59d8c914ef8273461d4bf495df384cc5f8 (git)
Affected: 2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba , < d8ac2537763b54d278b80b2b080e1652523c7d4c (git)
Affected: 2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba , < 5389407bba1eab1266c6d83e226fb0840cb98dd5 (git)
Affected: 2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba , < cfd7c9d260dc0a3baaea05a122a19ab91e193c65 (git)
Affected: 2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba , < b36aaa64d58aaa2f2cbc8275e89bae76a2b6c3dc (git)
Affected: 2ba3d76a1e29f2ba64fbc762875cf9fb2d4ba2ba , < a43bdc376deab5fff1ceb93dca55bcab8dbdc1d6 (git)
Create a notification for this product.
    Linux Linux Affected: 2.6.31
Unaffected: 0 , < 2.6.31 (semver)
Unaffected: 4.19.306 , ≤ 4.19.* (semver)
Unaffected: 5.4.268 , ≤ 5.4.* (semver)
Unaffected: 5.10.209 , ≤ 5.10.* (semver)
Unaffected: 5.15.148 , ≤ 5.15.* (semver)
Unaffected: 6.1.75 , ≤ 6.1.* (semver)
Unaffected: 6.6.14 , ≤ 6.6.* (semver)
Unaffected: 6.7.2 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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\"programFiles\": [\"drivers/mtd/mtd_blkdevs.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/aeba358bcc8ffddf9b4a9bd0e5ec9eb338d46022\"}, {\"url\": \"https://git.kernel.org/stable/c/1bf4fe14e97cda621522eb2f28b0a4e87c5b0745\"}, {\"url\": \"https://git.kernel.org/stable/c/001a3f59d8c914ef8273461d4bf495df384cc5f8\"}, {\"url\": \"https://git.kernel.org/stable/c/d8ac2537763b54d278b80b2b080e1652523c7d4c\"}, {\"url\": \"https://git.kernel.org/stable/c/5389407bba1eab1266c6d83e226fb0840cb98dd5\"}, {\"url\": \"https://git.kernel.org/stable/c/cfd7c9d260dc0a3baaea05a122a19ab91e193c65\"}, {\"url\": \"https://git.kernel.org/stable/c/b36aaa64d58aaa2f2cbc8275e89bae76a2b6c3dc\"}, {\"url\": \"https://git.kernel.org/stable/c/a43bdc376deab5fff1ceb93dca55bcab8dbdc1d6\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmtd: Fix gluebi NULL pointer dereference caused by ftl notifier\\n\\nIf both ftl.ko and gluebi.ko are loaded, the notifier of ftl\\ntriggers NULL pointer dereference when trying to access\\n\\u2018gluebi-\u003edesc\\u2019 in gluebi_read().\\n\\nubi_gluebi_init\\n  ubi_register_volume_notifier\\n    ubi_enumerate_volumes\\n      ubi_notify_all\\n        gluebi_notify    nb-\u003enotifier_call()\\n          gluebi_create\\n            mtd_device_register\\n              mtd_device_parse_register\\n                add_mtd_device\\n                  blktrans_notify_add   not-\u003eadd()\\n                    ftl_add_mtd         tr-\u003eadd_mtd()\\n                      scan_header\\n                        mtd_read\\n                          mtd_read_oob\\n                            mtd_read_oob_std\\n                              gluebi_read   mtd-\u003eread()\\n                                gluebi-\u003edesc - NULL\\n\\nDetailed reproduction information available at the Link [1],\\n\\nIn the normal case, obtain gluebi-\u003edesc in the gluebi_get_device(),\\nand access gluebi-\u003edesc in the gluebi_read(). However,\\ngluebi_get_device() is not executed in advance in the\\nftl_add_mtd() process, which leads to NULL pointer dereference.\\n\\nThe solution for the gluebi module is to run jffs2 on the UBI\\nvolume without considering working with ftl or mtdblock [2].\\nTherefore, this problem can be avoided by preventing gluebi from\\ncreating the mtdblock device after creating mtd partition of the\\ntype MTD_UBIVOLUME.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.306\", \"versionStartIncluding\": \"2.6.31\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.268\", \"versionStartIncluding\": \"2.6.31\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.209\", \"versionStartIncluding\": \"2.6.31\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.148\", \"versionStartIncluding\": \"2.6.31\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.75\", \"versionStartIncluding\": \"2.6.31\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.14\", \"versionStartIncluding\": \"2.6.31\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.2\", \"versionStartIncluding\": \"2.6.31\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"2.6.31\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:36:46.435Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-52449\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:36:46.435Z\", \"dateReserved\": \"2024-02-20T12:30:33.292Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-22T16:21:40.841Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

Author Source Type Date

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.