VULNERABILITY

Amazon Linux AMI 2: CVE-2025-21703: Security patch for kernel, kernel-livepatch-5.10.233-224.894, kernel-livepatch-5.10.234-225.895, kernel-livepatch-5.10.234-225.910 (Multiple Advisories)

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Amazon Linux AMI 2: CVE-2025-21703: Security patch for kernel, kernel-livepatch-5.10.233-224.894, kernel-livepatch-5.10.234-225.895, kernel-livepatch-5.10.234-225.910 (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
02/18/2025
Created
03/15/2025
Added
03/14/2025
Modified
04/30/2025

Description

In the Linux kernel, the following vulnerability has been resolved: netem: Update sch->q.qlen before qdisc_tree_reduce_backlog() qdisc_tree_reduce_backlog() notifies parent qdisc only if child qdisc becomes empty, therefore we need to reduce the backlog of the child qdisc before calling it. Otherwise it would miss the opportunity to call cops->qlen_notify(), in the case of DRR, it resulted in UAF since DRR uses ->qlen_notify() to maintain its active list.

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-5-10-233-224-894
  • amazon-linux-ami-2-upgrade-kernel-livepatch-5-10-234-225-895
  • amazon-linux-ami-2-upgrade-kernel-livepatch-5-10-234-225-910
  • amazon-linux-ami-2-upgrade-kernel-livepatch-5-10-234-225-917
  • amazon-linux-ami-2-upgrade-kernel-livepatch-5-15-178-120-187
  • 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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