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Ubuntu: (CVE-2021-47480): linux vulnerability

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Ubuntu: (CVE-2021-47480): linux vulnerability

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
05/22/2024
Created
11/21/2024
Added
11/19/2024
Modified
02/11/2025

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.

Solution(s)

  • ubuntu-upgrade-linux
  • ubuntu-upgrade-linux-aws
  • ubuntu-upgrade-linux-aws-5-4
  • ubuntu-upgrade-linux-aws-fips
  • ubuntu-upgrade-linux-aws-hwe
  • ubuntu-upgrade-linux-azure
  • ubuntu-upgrade-linux-azure-4-15
  • ubuntu-upgrade-linux-azure-5-4
  • ubuntu-upgrade-linux-azure-fips
  • ubuntu-upgrade-linux-bluefield
  • ubuntu-upgrade-linux-fips
  • ubuntu-upgrade-linux-gcp
  • ubuntu-upgrade-linux-gcp-4-15
  • ubuntu-upgrade-linux-gcp-5-4
  • ubuntu-upgrade-linux-gcp-fips
  • ubuntu-upgrade-linux-gkeop
  • ubuntu-upgrade-linux-hwe
  • ubuntu-upgrade-linux-hwe-5-4
  • ubuntu-upgrade-linux-ibm
  • ubuntu-upgrade-linux-ibm-5-4
  • ubuntu-upgrade-linux-kvm
  • ubuntu-upgrade-linux-oracle
  • ubuntu-upgrade-linux-oracle-5-4
  • ubuntu-upgrade-linux-raspi
  • ubuntu-upgrade-linux-raspi-5-4

References

  • https://attackerkb.com/topics/cve-2021-47480
  • CVE - 2021-47480
  • https://git.kernel.org/linus/f2b85040acec9a928b4eb1b57a989324e8e38d3f
  • https://git.kernel.org/stable/c/1105573d964f7b78734348466b01f5f6ba8a1813
  • https://git.kernel.org/stable/c/1ce287eff9f23181d5644db787f472463a61f68b
  • https://git.kernel.org/stable/c/61a0faa89f21861d1f8d059123b5c285a5d9ffee
  • https://git.kernel.org/stable/c/7b57c38d12aed1b5d92f74748bed25e0d041729f
  • https://git.kernel.org/stable/c/8e4814a461787e15a31d322d9efbe0d4f6822428
  • https://git.kernel.org/stable/c/c2df161f69fb1c67f63adbd193368b47f511edc0
  • https://git.kernel.org/stable/c/f2b85040acec9a928b4eb1b57a989324e8e38d3f
  • https://git.kernel.org/stable/c/f30822c0b4c35ec86187ab055263943dc71a6836
  • https://www.cve.org/CVERecord?id=CVE-2021-47480
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