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Amazon Linux AMI 2: CVE-2021-41073: Security patch for kernel, kernel-livepatch-5.10.50-44.131, kernel-livepatch-5.10.50-44.132, kernel-livepatch-5.10.59-52.142, kernel-livepatch-5.10.62-55.141 (Multiple Advisories)

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Amazon Linux AMI 2: CVE-2021-41073: Security patch for kernel, kernel-livepatch-5.10.50-44.131, kernel-livepatch-5.10.50-44.132, kernel-livepatch-5.10.59-52.142, kernel-livepatch-5.10.62-55.141 (Multiple Advisories)

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
09/19/2021
Created
11/06/2021
Added
11/05/2021
Modified
11/26/2024

Description

loop_rw_iter in fs/io_uring.c in the Linux kernel 5.10 through 5.14.6 allows local users to gain privileges by using IORING_OP_PROVIDE_BUFFERS to trigger a free of a kernel buffer, as demonstrated by using /proc/<pid>/maps for exploitation.

Solution(s)

  • amazon-linux-ami-2-upgrade-bpftool
  • amazon-linux-ami-2-upgrade-bpftool-debuginfo
  • amazon-linux-ami-2-upgrade-kernel
  • amazon-linux-ami-2-upgrade-kernel-debuginfo
  • amazon-linux-ami-2-upgrade-kernel-debuginfo-common-aarch64
  • amazon-linux-ami-2-upgrade-kernel-debuginfo-common-x86_64
  • amazon-linux-ami-2-upgrade-kernel-devel
  • amazon-linux-ami-2-upgrade-kernel-headers
  • amazon-linux-ami-2-upgrade-kernel-livepatch-5-10-50-44-131
  • amazon-linux-ami-2-upgrade-kernel-livepatch-5-10-50-44-131-debuginfo
  • amazon-linux-ami-2-upgrade-kernel-livepatch-5-10-50-44-132
  • amazon-linux-ami-2-upgrade-kernel-livepatch-5-10-50-44-132-debuginfo
  • amazon-linux-ami-2-upgrade-kernel-livepatch-5-10-59-52-142
  • amazon-linux-ami-2-upgrade-kernel-livepatch-5-10-59-52-142-debuginfo
  • amazon-linux-ami-2-upgrade-kernel-livepatch-5-10-62-55-141
  • amazon-linux-ami-2-upgrade-kernel-livepatch-5-10-62-55-141-debuginfo
  • amazon-linux-ami-2-upgrade-kernel-livepatch-5-10-68-62-173
  • amazon-linux-ami-2-upgrade-kernel-tools
  • amazon-linux-ami-2-upgrade-kernel-tools-debuginfo
  • amazon-linux-ami-2-upgrade-kernel-tools-devel
  • amazon-linux-ami-2-upgrade-perf
  • amazon-linux-ami-2-upgrade-perf-debuginfo
  • amazon-linux-ami-2-upgrade-python-perf
  • amazon-linux-ami-2-upgrade-python-perf-debuginfo

References

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