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Ubuntu: (CVE-2021-47207): linux vulnerability

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Ubuntu: (CVE-2021-47207): linux vulnerability

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
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: ALSA: gus: fix null pointer dereference on pointer block The pointer block return from snd_gf1_dma_next_block could be null, so there is a potential null pointer dereference issue. Fix this by adding a null check before dereference.

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-2021-47207
  • CVE - 2021-47207
  • https://git.kernel.org/linus/a0d21bb3279476c777434c40d969ea88ca64f9aa
  • https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3
  • https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f
  • https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be
  • https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c
  • https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa
  • https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315
  • https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc
  • https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc
  • https://www.cve.org/CVERecord?id=CVE-2021-47207
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