CVE-2021-47480
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.
Does this matter?
Lower severity and a low EPSS score (0.21%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.21% probability · 11th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1105573d964f7b78734348466b01f5f6ba8a1813Patch
- https://git.kernel.org/stable/c/1ce287eff9f23181d5644db787f472463a61f68bPatch
- https://git.kernel.org/stable/c/61a0faa89f21861d1f8d059123b5c285a5d9ffeePatch
- https://git.kernel.org/stable/c/7b57c38d12aed1b5d92f74748bed25e0d041729fPatch
- https://git.kernel.org/stable/c/8e4814a461787e15a31d322d9efbe0d4f6822428Patch
- https://git.kernel.org/stable/c/c2df161f69fb1c67f63adbd193368b47f511edc0Patch
- https://git.kernel.org/stable/c/f2b85040acec9a928b4eb1b57a989324e8e38d3fPatch
- https://git.kernel.org/stable/c/f30822c0b4c35ec86187ab055263943dc71a6836Patch
- https://git.kernel.org/stable/c/1105573d964f7b78734348466b01f5f6ba8a1813Patch
- https://git.kernel.org/stable/c/1ce287eff9f23181d5644db787f472463a61f68bPatch
- https://git.kernel.org/stable/c/61a0faa89f21861d1f8d059123b5c285a5d9ffeePatch
- https://git.kernel.org/stable/c/7b57c38d12aed1b5d92f74748bed25e0d041729fPatch
- https://git.kernel.org/stable/c/8e4814a461787e15a31d322d9efbe0d4f6822428Patch
- https://git.kernel.org/stable/c/c2df161f69fb1c67f63adbd193368b47f511edc0Patch
- https://git.kernel.org/stable/c/f2b85040acec9a928b4eb1b57a989324e8e38d3fPatch
- https://git.kernel.org/stable/c/f30822c0b4c35ec86187ab055263943dc71a6836Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.