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Ubuntu: USN-6976-1 (CVE-2021-47571): Linux kernel vulnerabilities

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Ubuntu: USN-6976-1 (CVE-2021-47571): Linux kernel vulnerabilities

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
01/30/2025

Description

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect() The free_rtllib() function frees the "dev" pointer so there is use after free on the next line.Re-arrange things to avoid that.

Solution(s)

  • ubuntu-upgrade-linux-image-4-4-0-1135-aws
  • ubuntu-upgrade-linux-image-4-4-0-1136-kvm
  • ubuntu-upgrade-linux-image-4-4-0-1173-aws
  • ubuntu-upgrade-linux-image-4-4-0-258-generic
  • ubuntu-upgrade-linux-image-4-4-0-258-lowlatency
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-generic
  • ubuntu-upgrade-linux-image-generic-lts-xenial
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-lowlatency-lts-xenial
  • ubuntu-upgrade-linux-image-virtual
  • ubuntu-upgrade-linux-image-virtual-lts-xenial

References

  • https://attackerkb.com/topics/cve-2021-47571
  • CVE - 2021-47571
  • USN-6976-1
  • https://git.kernel.org/linus/b535917c51acc97fb0761b1edec85f1f3d02bda4
  • https://git.kernel.org/stable/c/2e1ec01af2c7139c6a600bbfaea1a018b35094b6
  • https://git.kernel.org/stable/c/8d0163cec7de995f9eb9c3128c83fb84f0cb1c64
  • https://git.kernel.org/stable/c/9186680382934b0e7529d3d70dcc0a21d087683b
  • https://git.kernel.org/stable/c/b535917c51acc97fb0761b1edec85f1f3d02bda4
  • https://git.kernel.org/stable/c/bca19bb2dc2d89ce60c4a4a6e59609d4cf2e13ef
  • https://git.kernel.org/stable/c/c0ef0e75a858cbd8618b473f22fbca36106dcf82
  • https://git.kernel.org/stable/c/d43aecb694b10db9a4228ce2d38b5ae8de374443
  • https://git.kernel.org/stable/c/e27ee2f607fe6a9b923ef1fc65461c0613c97594
  • https://ubuntu.com/security/notices/USN-6976-1
  • https://www.cve.org/CVERecord?id=CVE-2021-47571
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