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CVE-2021-47480

Disclosure Date: May 22, 2024 •
CVE-2021-47480
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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.

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CVSS V3 Severity and Metrics
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General Information

Offensive Application
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Utility Class
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OS
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Vulnerable Versions
Linux 1105573d964f
Linux not down converted
Prerequisites
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Vendors

  • Linux

Products

  • Linux
Technical Analysis