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CVE-2024-36932 (GCVE-0-2024-36932)

Vulnerability from cvelistv5 – Published: 2024-05-30 15:29 – Updated: 2026-05-11 20:17
VLAI
Title
thermal/debugfs: Prevent use-after-free from occurring after cdev removal
Summary
In the Linux kernel, the following vulnerability has been resolved: thermal/debugfs: Prevent use-after-free from occurring after cdev removal Since thermal_debug_cdev_remove() does not run under cdev->lock, it can run in parallel with thermal_debug_cdev_state_update() and it may free the struct thermal_debugfs object used by the latter after it has been checked against NULL. If that happens, thermal_debug_cdev_state_update() will access memory that has been freed already causing the kernel to crash. Address this by using cdev->lock in thermal_debug_cdev_remove() around the cdev->debugfs value check (in case the same cdev is removed at the same time in two different threads) and its reset to NULL. Cc :6.8+ <stable@vger.kernel.org> # 6.8+
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-07 14:04 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 755113d7678681a137c330f7997ceb680adb644e , < c1279dee33369e2525f532364bb87207d23b9481 (git)
Affected: 755113d7678681a137c330f7997ceb680adb644e , < d351eb0ab04c3e8109895fc33250cebbce9c11da (git)
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Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 6.8.10 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
linux linux_kernel Affected: 755113d76786 , < c1279dee3336 (custom)
Affected: 755113d76786 , < d351eb0ab04c (custom)
Affected: 6.8
Unaffected: 0 , < 6.8 (custom)
Unaffected: 6.8.10
Unaffected: 6.9
    cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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      "containers": "{\"cna\": {\"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-05-30T15:29:23.178Z\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nthermal/debugfs: Prevent use-after-free from occurring after cdev removal\\n\\nSince thermal_debug_cdev_remove() does not run under cdev-\u003elock, it can\\nrun in parallel with thermal_debug_cdev_state_update() and it may free\\nthe struct thermal_debugfs object used by the latter after it has been\\nchecked against NULL.\\n\\nIf that happens, thermal_debug_cdev_state_update() will access memory\\nthat has been freed already causing the kernel to crash.\\n\\nAddress this by using cdev-\u003elock in thermal_debug_cdev_remove() around\\nthe cdev-\u003edebugfs value check (in case the same cdev is removed at the\\nsame time in two different threads) and its reset to NULL.\\n\\nCc :6.8+ \u003cstable@vger.kernel.org\u003e # 6.8+\"}], \"affected\": [{\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"unaffected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"drivers/thermal/thermal_debugfs.c\"], \"versions\": [{\"version\": \"755113d76786\", \"lessThan\": \"c1279dee3336\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"755113d76786\", \"lessThan\": \"d351eb0ab04c\", \"status\": \"affected\", \"versionType\": \"git\"}]}, {\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"affected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"drivers/thermal/thermal_debugfs.c\"], \"versions\": [{\"version\": \"6.8\", \"status\": \"affected\"}, {\"version\": \"0\", \"lessThan\": \"6.8\", \"status\": \"unaffected\", \"versionType\": \"custom\"}, {\"version\": \"6.8.10\", \"lessThanOrEqual\": \"6.8.*\", \"status\": \"unaffected\", \"versionType\": \"custom\"}, {\"version\": \"6.9\", \"lessThanOrEqual\": \"*\", \"status\": \"unaffected\", \"versionType\": \"original_commit_for_fix\"}]}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/c1279dee33369e2525f532364bb87207d23b9481\"}, {\"url\": \"https://git.kernel.org/stable/c/d351eb0ab04c3e8109895fc33250cebbce9c11da\"}], \"title\": \"thermal/debugfs: Prevent use-after-free from occurring after cdev removal\", \"x_generator\": {\"engine\": \"bippy-a5840b7849dd\"}}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-36932\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-07T14:04:33.823483Z\"}}}], \"affected\": [{\"cpes\": [\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\"], \"vendor\": \"linux\", \"product\": \"linux_kernel\", \"versions\": [{\"status\": \"affected\", \"version\": \"755113d76786\", \"lessThan\": \"c1279dee3336\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"755113d76786\", \"lessThan\": \"d351eb0ab04c\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"6.8\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.8\", \"versionType\": \"custom\"}, {\"status\": \"unaffected\", \"version\": \"6.8.10\"}, {\"status\": \"unaffected\", \"version\": \"6.9\"}], \"defaultStatus\": \"unknown\"}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-07T14:06:44.119Z\"}}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-36932\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"Linux\", \"dateReserved\": \"2024-05-30T15:25:07.071Z\", \"datePublished\": \"2024-05-30T15:29:23.178Z\", \"dateUpdated\": \"2024-06-07T14:06:48.074Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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.