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 v3.1 NVD

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

CVSS v2.0 NVD

5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS

3.06% chance of exploitation in the next 30 days, 87th percentile

Published

2021-02-15

Updated

2026-10-14

Proof-of-concept exploits (1)

• https://gitlab.gnome.org/GNOME/glib/-/issues/2319

Security advisories

• https://lists.debian.org/debian-lts-announce/2022/06/msg00006.html
• https://security.gentoo.org/glsa/202107-13
• https://security.netapp.com/advisory/ntap-20210319-0004

References

• CVE Record
• NVD entry