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Medium ALAS2023-2026-1848 1 CVE

Moderate: libusbx security update (Amazon Linux 2023)

Published Jun 22, 2026 · Updated Jun 22, 2026

Summary

Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-23679: libusb before version 1.0.30 contains a NULL pointer dereference vulnerability that allows attackers to crash applications by supplying a malformed USB configuration descriptor where an interface claims bNumEndpoints greater than zero but is followed by a class-specific descriptor whose bLength exceeds the remaining buffer size, causing parse_interface() to return early without allocating the endpoint array. Attackers can exploit this flaw through libusb_get_active_config_descriptor or libusb_get_config_descriptor by providing crafted descriptors via virtualized USB passthrough, file-based descriptor parsing, or network sources, causing any application iterating over endpoints to dereference a NULL endpoint pointer and crash.

Fixed packages 7

ReleasePackageFixed in
Amazon Linux · 2023 libusbx 0:1.0.24-2.amzn2023.0.3
Amazon Linux · 2023 libusbx-debuginfo 0:1.0.24-2.amzn2023.0.3
Amazon Linux · 2023 libusbx-debugsource 0:1.0.24-2.amzn2023.0.3
Amazon Linux · 2023 libusbx-devel 0:1.0.24-2.amzn2023.0.3
Amazon Linux · 2023 libusbx-devel-doc 0:1.0.24-2.amzn2023.0.3
Amazon Linux · 2023 libusbx-tests-examples 0:1.0.24-2.amzn2023.0.3
Amazon Linux · 2023 libusbx-tests-examples-debuginfo 0:1.0.24-2.amzn2023.0.3

Vulnerabilities 1

  • Medium 6.2

    libusb < 1.0.30 NULL Pointer Dereference in parse_interface()

    libusb before version 1.0.30 contains a NULL pointer dereference vulnerability that allows attackers to crash applications by supplying a malformed USB configuration descriptor where an interface claims bNumEndpoints greater than zero but is followed by a cla…

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-23679.html