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Ubuntu: (CVE-2021-47203): linux vulnerability

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Ubuntu: (CVE-2021-47203): linux vulnerability

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
04/10/2024
Created
11/21/2024
Added
11/19/2024
Modified
02/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq() When parsing the txq list in lpfc_drain_txq(), the driver attempts to pass the requests to the adapter. If such an attempt fails, a local "fail_msg" string is set and a log message output.The job is then added to a completions list for cancellation. Processing of any further jobs from the txq list continues, but since "fail_msg" remains set, jobs are added to the completions list regardless of whether a wqe was passed to the adapter.If successfully added to txcmplq, jobs are added to both lists resulting in list corruption. Fix by clearing the fail_msg string after adding a job to the completions list. This stops the subsequent jobs from being added to the completions list unless they had an appropriate failure.

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-2021-47203
  • CVE - 2021-47203
  • https://git.kernel.org/linus/99154581b05c8fb22607afb7c3d66c1bace6aa5d
  • https://git.kernel.org/stable/c/16bcbfb56d759c25665f786e33ec633b9508a08f
  • https://git.kernel.org/stable/c/814d3610c4ce86e8cf285b2cdac0057a42e82de5
  • https://git.kernel.org/stable/c/99154581b05c8fb22607afb7c3d66c1bace6aa5d
  • https://git.kernel.org/stable/c/ad4776b5eb2e58af1226847fcd3b4f6d051674dd
  • https://git.kernel.org/stable/c/b291d147d0268e93ad866f8bc820ea14497abc9b
  • https://git.kernel.org/stable/c/c097bd5a59162156d9c2077a2f58732ffbaa9fca
  • https://git.kernel.org/stable/c/ec70d80a8642900086447ba0cdc79e3f44d42e8f
  • https://git.kernel.org/stable/c/f05a0191b90156e539cccc189b9d87ca2a4d9305
  • https://www.cve.org/CVERecord?id=CVE-2021-47203
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