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Ubuntu: (CVE-2021-46950): linux vulnerability

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Ubuntu: (CVE-2021-46950): linux vulnerability

Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
02/27/2024
Created
11/21/2024
Added
11/19/2024
Modified
02/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved: md/raid1: properly indicate failure when ending a failed write request This patch addresses a data corruption bug in raid1 arrays using bitmaps. Without this fix, the bitmap bits for the failed I/O end up being cleared. Since we are in the failure leg of raid1_end_write_request, the request either needs to be retried (R1BIO_WriteError) or failed (R1BIO_Degraded).

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-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-2021-46950
  • CVE - 2021-46950
  • https://git.kernel.org/linus/2417b9869b81882ab90fd5ed1081a1cb2d4db1dd
  • https://git.kernel.org/stable/c/12216d0919b64ee2ea5dc7a50e455670f44383d5
  • https://git.kernel.org/stable/c/2417b9869b81882ab90fd5ed1081a1cb2d4db1dd
  • https://git.kernel.org/stable/c/538244fba59fde17186322776247cd9c05be86dd
  • https://git.kernel.org/stable/c/59452e551784b7a57a45d971727e9db63b192515
  • https://git.kernel.org/stable/c/661061a45e32d8b2cc0e306da9f169ad44011382
  • https://git.kernel.org/stable/c/6920cef604fa57f9409e3960413e9cc11f5c5a40
  • https://git.kernel.org/stable/c/a6e17cab00fc5bf85472434c52ac751426257c6f
  • https://www.cve.org/CVERecord?id=CVE-2021-46950
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