CVE-2022-49212 (GCVE-0-2022-49212)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:55 – Updated: 2026-05-11 18:55
VLAI?
Title
mtd: rawnand: atmel: fix refcount issue in atmel_nand_controller_init
Summary
In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: atmel: fix refcount issue in atmel_nand_controller_init The reference counting issue happens in several error handling paths on a refcounted object "nc->dmac". In these paths, the function simply returns the error code, forgetting to balance the reference count of "nc->dmac", increased earlier by dma_request_channel(), which may cause refcount leaks. Fix it by decrementing the refcount of specific object in those error paths.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f88fc122cc34c2545dec9562eaab121494e401ef , < 0856bf27057561f42b37df111603cf5a0d040294 (git)
Affected: f88fc122cc34c2545dec9562eaab121494e401ef , < 9843c9c98f26c6ad843260b19bfdaa2598f2ae1e (git)
Affected: f88fc122cc34c2545dec9562eaab121494e401ef , < 9b08d211db4c447eb1a07df65e45e0aa772e0fa6 (git)
Affected: f88fc122cc34c2545dec9562eaab121494e401ef , < a3587259ae553e41d1ce8c7435351a5d6b299a11 (git)
Affected: f88fc122cc34c2545dec9562eaab121494e401ef , < fe0e2ce5c87e9c0b9485ff566362030aa55972cf (git)
Affected: f88fc122cc34c2545dec9562eaab121494e401ef , < 8baea2b96fa90af8d0f937caf4cf2105ee094d93 (git)
Affected: f88fc122cc34c2545dec9562eaab121494e401ef , < f1694169f3674cdf7553aed06864254635679878 (git)
Affected: f88fc122cc34c2545dec9562eaab121494e401ef , < fecbd4a317c95d73c849648c406bcf1b6a0ec1cf (git)
Create a notification for this product.
Linux Linux Affected: 4.12
Unaffected: 0 , < 4.12 (semver)
Unaffected: 4.14.276 , ≤ 4.14.* (semver)
Unaffected: 4.19.238 , ≤ 4.19.* (semver)
Unaffected: 5.4.189 , ≤ 5.4.* (semver)
Unaffected: 5.10.110 , ≤ 5.10.* (semver)
Unaffected: 5.15.33 , ≤ 5.15.* (semver)
Unaffected: 5.16.19 , ≤ 5.16.* (semver)
Unaffected: 5.17.2 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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\"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f88fc122cc34c2545dec9562eaab121494e401ef\", \"lessThan\": \"fe0e2ce5c87e9c0b9485ff566362030aa55972cf\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f88fc122cc34c2545dec9562eaab121494e401ef\", \"lessThan\": \"8baea2b96fa90af8d0f937caf4cf2105ee094d93\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f88fc122cc34c2545dec9562eaab121494e401ef\", \"lessThan\": \"f1694169f3674cdf7553aed06864254635679878\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f88fc122cc34c2545dec9562eaab121494e401ef\", \"lessThan\": \"fecbd4a317c95d73c849648c406bcf1b6a0ec1cf\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/mtd/nand/raw/atmel/nand-controller.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.12\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.12\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.14.276\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.14.*\"}, {\"status\": \"unaffected\", \"version\": \"4.19.238\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.189\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.110\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.33\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16.19\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.17.*\"}, {\"status\": \"unaffected\", \"version\": \"5.18\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/mtd/nand/raw/atmel/nand-controller.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/0856bf27057561f42b37df111603cf5a0d040294\"}, {\"url\": \"https://git.kernel.org/stable/c/9843c9c98f26c6ad843260b19bfdaa2598f2ae1e\"}, {\"url\": \"https://git.kernel.org/stable/c/9b08d211db4c447eb1a07df65e45e0aa772e0fa6\"}, {\"url\": \"https://git.kernel.org/stable/c/a3587259ae553e41d1ce8c7435351a5d6b299a11\"}, {\"url\": \"https://git.kernel.org/stable/c/fe0e2ce5c87e9c0b9485ff566362030aa55972cf\"}, {\"url\": \"https://git.kernel.org/stable/c/8baea2b96fa90af8d0f937caf4cf2105ee094d93\"}, {\"url\": \"https://git.kernel.org/stable/c/f1694169f3674cdf7553aed06864254635679878\"}, {\"url\": \"https://git.kernel.org/stable/c/fecbd4a317c95d73c849648c406bcf1b6a0ec1cf\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmtd: rawnand: atmel: fix refcount issue in atmel_nand_controller_init\\n\\nThe reference counting issue happens in several error handling paths\\non a refcounted object \\\"nc-\u003edmac\\\". In these paths, the function simply\\nreturns the error code, forgetting to balance the reference count of\\n\\\"nc-\u003edmac\\\", increased earlier by dma_request_channel(), which may\\ncause refcount leaks.\\n\\nFix it by decrementing the refcount of specific object in those error\\npaths.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.276\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.238\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.189\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.110\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.33\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.19\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17.2\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18\", \"versionStartIncluding\": \"4.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T18:55:18.968Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49212\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T18:55:18.968Z\", \"dateReserved\": \"2025-02-26T01:49:39.292Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T01:55:48.690Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.