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Ubuntu: (CVE-2021-47051): linux vulnerability

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Ubuntu: (CVE-2021-47051): linux vulnerability

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
02/28/2024
Created
11/21/2024
Added
11/19/2024
Modified
02/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved: spi: fsl-lpspi: Fix PM reference leak in lpspi_prepare_xfer_hardware() pm_runtime_get_sync will increment pm usage counter even it failed. Forgetting to putting operation will result in reference leak here. Fix it by replacing it with pm_runtime_resume_and_get to keep usage counter balanced.

Solution(s)

  • ubuntu-upgrade-linux
  • ubuntu-upgrade-linux-aws
  • ubuntu-upgrade-linux-aws-5-4
  • ubuntu-upgrade-linux-aws-fips
  • ubuntu-upgrade-linux-azure
  • 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-5-4
  • ubuntu-upgrade-linux-gcp-fips
  • ubuntu-upgrade-linux-gkeop
  • ubuntu-upgrade-linux-hwe-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-2021-47051
  • CVE - 2021-47051
  • https://git.kernel.org/linus/a03675497970a93fcf25d81d9d92a59c2d7377a7
  • https://git.kernel.org/stable/c/4a01ad002d2e03c399af536562693752af7c81b1
  • https://git.kernel.org/stable/c/6a2b5cee0d31ab6cc51030c441135b0e31217282
  • https://git.kernel.org/stable/c/a03675497970a93fcf25d81d9d92a59c2d7377a7
  • https://git.kernel.org/stable/c/b8207bfc539cd07d15e753ff2d179c5b61c673b1
  • https://git.kernel.org/stable/c/ce02e58ddf8658a4c3bed2296f32a5873b3f7cce
  • https://www.cve.org/CVERecord?id=CVE-2021-47051
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