CVE-2021-27219

An issue was discovered in GNOME GLib before 2.66.6 and 2.67.x before 2.67.3. The function g_bytes_new has an integer overflow on 64-bit platforms due to an implicit cast from 64 bits to 32 bits. The overflow could potentially lead to memory corruption.

CVSS 3.1

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

EPSS

3.1% chance of exploitation in the next 30 days; higher than 87% 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/-/issues/2319
• https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
• https://lists.debian.org/debian-lts-announce/2022/06/msg00006.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2REA7RVKN7ZHRLJOEGBRQKJIPZQPAELZ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJMPNDO4GDVURYQFYKFOWY5HAF4FTEPN/

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