CVE-2024-26846 (GCVE-0-2024-26846)

Vulnerability from cvelistv5 – Published: 2024-04-17 10:10 – Updated: 2026-05-11 20:05
VLAI?
Title
nvme-fc: do not wait in vain when unloading module
Summary
In the Linux kernel, the following vulnerability has been resolved: nvme-fc: do not wait in vain when unloading module The module exit path has race between deleting all controllers and freeing 'left over IDs'. To prevent double free a synchronization between nvme_delete_ctrl and ida_destroy has been added by the initial commit. There is some logic around trying to prevent from hanging forever in wait_for_completion, though it does not handling all cases. E.g. blktests is able to reproduce the situation where the module unload hangs forever. If we completely rely on the cleanup code executed from the nvme_delete_ctrl path, all IDs will be freed eventually. This makes calling ida_destroy unnecessary. We only have to ensure that all nvme_delete_ctrl code has been executed before we leave nvme_fc_exit_module. This is done by flushing the nvme_delete_wq workqueue. While at it, remove the unused nvme_fc_wq workqueue too.
Severity ?
4.4 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 4c73cbdff1119d088ed16d63def59ad32b11b18f , < 4f2c95015ec2a1899161be6c0bdaecedd5a7bfb2 (git)
Affected: 4c73cbdff1119d088ed16d63def59ad32b11b18f , < 0bf567d6d9ffe09e059bbdfb4d07143cef42c75c (git)
Affected: 4c73cbdff1119d088ed16d63def59ad32b11b18f , < 085195aa90a924c79e35569bcdad860d764a8e17 (git)
Affected: 4c73cbdff1119d088ed16d63def59ad32b11b18f , < baa6b7eb8c66486bd64608adc63fe03b30d3c0b9 (git)
Affected: 4c73cbdff1119d088ed16d63def59ad32b11b18f , < c0882c366418bf9c19e1ba7f270fe377a9bf5d67 (git)
Affected: 4c73cbdff1119d088ed16d63def59ad32b11b18f , < 70fbfc47a392b98e5f8dba70c6efc6839205c982 (git)
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Linux Linux Affected: 5.3
Unaffected: 0 , < 5.3 (semver)
Unaffected: 5.10.211 , ≤ 5.10.* (semver)
Unaffected: 5.15.150 , ≤ 5.15.* (semver)
Unaffected: 6.1.80 , ≤ 6.1.* (semver)
Unaffected: 6.6.19 , ≤ 6.6.* (semver)
Unaffected: 6.7.7 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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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.