跳转到帖子

Ubuntu: (CVE-2021-47500): linux vulnerability

recommended_posts

发布于
  • Members

Ubuntu: (CVE-2021-47500): linux vulnerability

Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
05/24/2024
Created
11/21/2024
Added
11/19/2024
Modified
02/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved: iio: mma8452: Fix trigger reference couting The mma8452 driver directly assigns a trigger to the struct iio_dev. The IIO core when done using this trigger will call `iio_trigger_put()` to drop the reference count by 1. Without the matching `iio_trigger_get()` in the driver the reference count can reach 0 too early, the trigger gets freed while still in use and a use-after-free occurs. Fix this by getting a reference to the trigger before assigning it to the IIO device.

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-2021-47500
  • CVE - 2021-47500
  • https://git.kernel.org/linus/cd0082235783f814241a1c9483fb89e405f4f892
  • https://git.kernel.org/stable/c/094d513b78b1714113bc016684b8142382e071ba
  • https://git.kernel.org/stable/c/794c0898f6bf39a458655d5fb4af70ec43a5cfcb
  • https://git.kernel.org/stable/c/acf0088ac073ca6e7f4cad6acac112177e08df5e
  • https://git.kernel.org/stable/c/c43517071dfc9fce34f8f69dbb98a86017f6b739
  • https://git.kernel.org/stable/c/cd0082235783f814241a1c9483fb89e405f4f892
  • https://git.kernel.org/stable/c/db12d95085367de8b0223929d1332731024441f1
  • https://git.kernel.org/stable/c/f5deab10ced368c807866283f8b79144c4823be8
  • https://git.kernel.org/stable/c/fb75cc4740d81264cd5bcb0e17d961d018a8be96
  • https://www.cve.org/CVERecord?id=CVE-2021-47500
View more
  • 查看数 698
  • 已创建
  • 最后回复

参与讨论

你可立刻发布并稍后注册。 如果你有帐户,立刻登录发布帖子。

游客
回帖…