CVE-2021-27218

An issue was discovered in GNOME GLib before 2.66.7 and 2.67.x before 2.67.4. If g_byte_array_new_take() was called with a buffer of 4GB or more on a 64-bit platform, the length would be truncated modulo 2**32, causing unintended length truncation.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

4.1% chance of exploitation in the next 30 days; higher than 90% of CVEs (scores of 2026-10-25)

CWE

CWE-681

Published

2021-02-15

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• broadcom:brocade_fabric_operating_system_firmware
• debian:debian_linux
• fedoraproject:fedora
• gnome:glib
• netapp:active_iq_unified_manager
• netapp:cloud_backup
• netapp:e-series_performance_analyzer

References

• https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1942
• https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1944
• https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
• https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
• https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E

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