Vulnerability-Lookup

GHSA-WC2G-RVVJ-X242

Vulnerability from github – Published: 2024-05-22 09:31 – Updated: 2025-09-29 18:33

Details

In the Linux kernel, the following vulnerability has been resolved:

scsi: core: Put LLD module refcnt after SCSI device is released

SCSI host release is triggered when SCSI device is freed. We have to make sure that the low-level device driver module won't be unloaded before SCSI host instance is released because shost->hostt is required in the release handler.

Make sure to put LLD module refcnt after SCSI device is released.

Fixes a kernel panic of 'BUG: unable to handle page fault for address' reported by Changhui and Yi.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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  "aliases": [
    "CVE-2021-47480"
  ],
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  "modified": "2025-09-29T18:33:07Z",
  "published": "2024-05-22T09:31:46Z",
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CVE-2021-47480 (GCVE-0-2021-47480)

Vulnerability from cvelistv5 – Published: 2024-05-22 08:19 – Updated: 2026-05-11 13:55

Title

scsi: core: Put LLD module refcnt after SCSI device is released

Summary

In the Linux kernel, the following vulnerability has been resolved: scsi: core: Put LLD module refcnt after SCSI device is released SCSI host release is triggered when SCSI device is freed. We have to make sure that the low-level device driver module won't be unloaded before SCSI host instance is released because shost->hostt is required in the release handler. Make sure to put LLD module refcnt after SCSI device is released. Fixes a kernel panic of 'BUG: unable to handle page fault for address' reported by Changhui and Yi.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 15:36 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 54/100 over 6624 records in the last 180 days details

References

8 references

URL	Tags
https://git.kernel.org/stable/c/1105573d964f7b787…
https://git.kernel.org/stable/c/8e4814a461787e15a…
https://git.kernel.org/stable/c/61a0faa89f21861d1…
https://git.kernel.org/stable/c/c2df161f69fb1c67f…
https://git.kernel.org/stable/c/1ce287eff9f23181d…
https://git.kernel.org/stable/c/7b57c38d12aed1b5d…
https://git.kernel.org/stable/c/f30822c0b4c35ec86…
https://git.kernel.org/stable/c/f2b85040acec9a928…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 65110b2168950a19cc78b5027ed18cb811fbdae8 , < 1105573d964f7b78734348466b01f5f6ba8a1813 (git) Affected: 65110b2168950a19cc78b5027ed18cb811fbdae8 , < 8e4814a461787e15a31d322d9efbe0d4f6822428 (git) Affected: 65110b2168950a19cc78b5027ed18cb811fbdae8 , < 61a0faa89f21861d1f8d059123b5c285a5d9ffee (git) Affected: 65110b2168950a19cc78b5027ed18cb811fbdae8 , < c2df161f69fb1c67f63adbd193368b47f511edc0 (git) Affected: 65110b2168950a19cc78b5027ed18cb811fbdae8 , < 1ce287eff9f23181d5644db787f472463a61f68b (git) Affected: 65110b2168950a19cc78b5027ed18cb811fbdae8 , < 7b57c38d12aed1b5d92f74748bed25e0d041729f (git) Affected: 65110b2168950a19cc78b5027ed18cb811fbdae8 , < f30822c0b4c35ec86187ab055263943dc71a6836 (git) Affected: 65110b2168950a19cc78b5027ed18cb811fbdae8 , < f2b85040acec9a928b4eb1b57a989324e8e38d3f (git)
Linux	Linux	Affected: 2.6.16 Unaffected: 0 , < 2.6.16 (semver) Unaffected: 4.4.292 , ≤ 4.4.* (semver) Unaffected: 4.9.290 , ≤ 4.9.* (semver) Unaffected: 4.14.255 , ≤ 4.14.* (semver) Unaffected: 4.19.216 , ≤ 4.19.* (semver) Unaffected: 5.4.158 , ≤ 5.4.* (semver) Unaffected: 5.10.78 , ≤ 5.10.* (semver) Unaffected: 5.14.17 , ≤ 5.14.* (semver) Unaffected: 5.15 , ≤ * (original_commit_for_fix)

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Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.
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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-WC2G-RVVJ-X242

CVE-2021-47480 (GCVE-0-2021-47480)

Tags

Sightings

Nomenclature

Related by attack behaviour