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Vulnerability record · CVE-2021-27218 · published 15 February 2021

CVE-2021-27218: Gnome glib vulnerability

Gnome · Glib

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.

7.5 CVSS 3.1 High EPSS 4.1% · top 9.5% CWE-681 · CWE-681
7.5CVSS 3.1 base score, v2 5.0
4.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
20References
17 Jun 2026Last modified by NVD

Description

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

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1942 PatchVendor Advisory
https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1944 PatchVendor Advisory
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.ap
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.ap
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%
https://lists.debian.org/debian-lts-announce/2022/06/msg00006.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2REA7RVKN7ZHRLJOEGBRQKJ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJMPNDO4GDVURYQFYKFOWY5
https://security.gentoo.org/glsa/202107-13 Third Party Advisory
https://security.netapp.com/advisory/ntap-20210319-0004/ Third Party Advisory
https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1942 PatchVendor Advisory
https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1944 PatchVendor Advisory
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.ap
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.ap
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%
https://lists.debian.org/debian-lts-announce/2022/06/msg00006.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2REA7RVKN7ZHRLJOEGBRQKJ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJMPNDO4GDVURYQFYKFOWY5
https://security.gentoo.org/glsa/202107-13 Third Party Advisory
https://security.netapp.com/advisory/ntap-20210319-0004/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-27218), CISA KEV, FIRST EPSS (scores of 2026-10-12). This page is refreshed as NVD updates the record.