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VULNERABILITIES

CVE-2021-47480 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://git.kernel.org/stable/c/1105573d964f7b78734348466b01f5f6ba8a1813 kernel.orgPatch
https://git.kernel.org/stable/c/1ce287eff9f23181d5644db787f472463a61f68b kernel.orgPatch
https://git.kernel.org/stable/c/61a0faa89f21861d1f8d059123b5c285a5d9ffee kernel.orgPatch
https://git.kernel.org/stable/c/7b57c38d12aed1b5d92f74748bed25e0d041729f kernel.orgPatch
https://git.kernel.org/stable/c/8e4814a461787e15a31d322d9efbe0d4f6822428 kernel.orgPatch

see all 16 references

Weakness Enumeration

CWE-IDCWE NameSource
NVD-CWE-noinfoInsufficient Information to Classify Weakness[email protected]

Affected Products

ProductVersions
linux linux kernel
< 4.4.292
>= 4.5, < 4.9.290
>= 4.10, < 4.14.255
>= 4.15, < 4.19.216
>= 4.20, < 5.4.158

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc6:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-47480
NVD Published Date:
May 22, 2024
NVD Last Modified:
Jun 17, 2026
Source:
kernel.org
CVE-2021-47480 Details - Not Deferred