Race Condition Affecting bpftool package, versions <0:6.1.111-120.187.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.02% (5th percentile)

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  • Snyk IDSNYK-AMZN2023-BPFTOOL-9519934
  • published27 Mar 2025
  • disclosed9 Oct 2024

Introduced: 9 Oct 2024

CVE-2024-47668  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 bpftool to version 0:6.1.111-120.187.amzn2023 or higher.
This issue was patched in ALAS2023-2024-744.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bpftool package and not the bpftool package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc()

If we need to increase the tree depth, allocate a new node, and then race with another thread that increased the tree depth before us, we'll still have a preallocated node that might be used later.

If we then use that node for a new non-root node, it'll still have a pointer to the old root instead of being zeroed - fix this by zeroing it in the cmpxchg failure path.

CVSS Base Scores

version 3.1