CVE-2021-47361 (GCVE-0-2021-47361)

Vulnerability from cvelistv5 – Published: 2024-05-21 15:03 – Updated: 2026-05-11 13:53
VLAI?
Title
mcb: fix error handling in mcb_alloc_bus()
Summary
In the Linux kernel, the following vulnerability has been resolved: mcb: fix error handling in mcb_alloc_bus() There are two bugs: 1) If ida_simple_get() fails then this code calls put_device(carrier) but we haven't yet called get_device(carrier) and probably that leads to a use after free. 2) After device_initialize() then we need to use put_device() to release the bus. This will free the internal resources tied to the device and call mcb_free_bus() which will free the rest.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 18d28819809909c3f24bb72183a901c5e332a63d , < 8a558261fa57a6deefb0925ab1829f698b194aea (git)
Affected: 18d28819809909c3f24bb72183a901c5e332a63d , < 115b07d9f47e3996430b8f2007edd9768e1f807f (git)
Affected: 18d28819809909c3f24bb72183a901c5e332a63d , < 66f74ba9be9daf9c47fface6af3677f602774f6b (git)
Affected: 18d28819809909c3f24bb72183a901c5e332a63d , < 7751f609eadf36b1f53712bae430019c53a16eb0 (git)
Affected: 18d28819809909c3f24bb72183a901c5e332a63d , < 91e4ad05bf18322b5921d1a6c9b603f6eb1694f0 (git)
Affected: 18d28819809909c3f24bb72183a901c5e332a63d , < 9fc198f415dee070a1de957bb5bf5921d8df3499 (git)
Affected: 18d28819809909c3f24bb72183a901c5e332a63d , < 25a1433216489de4abc889910f744e952cb6dbae (git)
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Linux Linux Affected: 4.7
Unaffected: 0 , < 4.7 (semver)
Unaffected: 4.9.285 , ≤ 4.9.* (semver)
Unaffected: 4.14.249 , ≤ 4.14.* (semver)
Unaffected: 4.19.209 , ≤ 4.19.* (semver)
Unaffected: 5.4.150 , ≤ 5.4.* (semver)
Unaffected: 5.10.70 , ≤ 5.10.* (semver)
Unaffected: 5.14.9 , ≤ 5.14.* (semver)
Unaffected: 5.15 , ≤ * (original_commit_for_fix)
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}


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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.