CVE-2025-7345: Gdk‑pixbuf: heap‑buffer‑overflow in gdk‑pixbuf

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-08 · updated 2026-06-30
Weakness: CWE-120

Description

A flaw exists in gdk‑pixbuf within the gdk_pixbuf__jpeg_image_load_increment function (io-jpeg.c) and in glib’s g_base64_encode_step (glib/gbase64.c). When processing maliciously crafted JPEG images, a heap buffer overflow can occur during Base64 encoding, allowing out-of-bounds reads from heap memory, potentially causing application crashes or arbitrary code execution.

Affected products

Red Hat Enterprise Linux 10: all versions — fixed in 0:2.42.12-4.el10_0
Red Hat Enterprise Linux 7 Extended Lifecycle Support: all versions — fixed in 0:2.36.12-4.el7_9
Red Hat Enterprise Linux 8: all versions — fixed in 0:2.36.12-7.el8_10
Red Hat Enterprise Linux 8.2 Advanced Update Support: all versions — fixed in 0:2.36.12-6.el8_2
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support: all versions — fixed in 0:2.36.12-6.el8_4
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On: all versions — fixed in 0:2.36.12-6.el8_4
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support: all versions — fixed in 0:2.36.12-6.el8_6
Red Hat Enterprise Linux 8.6 Telecommunications Update Service: all versions — fixed in 0:2.36.12-6.el8_6
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions: all versions — fixed in 0:2.36.12-6.el8_6
Red Hat Enterprise Linux 8.8 Telecommunications Update Service: all versions — fixed in 0:2.36.12-6.el8_8
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions: all versions — fixed in 0:2.36.12-6.el8_8
Red Hat Enterprise Linux 9: all versions — fixed in 0:2.42.6-6.el9_6
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions: all versions — fixed in 0:2.42.6-3.el9_0
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions: all versions — fixed in 0:2.42.6-4.el9_2
Red Hat Enterprise Linux 9.4 Extended Update Support: all versions — fixed in 0:2.42.6-5.el9_4

How to fix

Upgrade to a fixed version: Red Hat Enterprise Linux 10 0:2.42.12-4.el10_0; Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:2.36.12-4.el7_9; Red Hat Enterprise Linux 8 0:2.36.12-7.el8_10; Red Hat Enterprise Linux 8.2 Advanced Update Support 0:2.36.12-6.el8_2; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:2.36.12-6.el8_4; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:2.36.12-6.el8_4; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:2.36.12-6.el8_6; Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:2.36.12-6.el8_6; Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:2.36.12-6.el8_6; Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:2.36.12-6.el8_8; Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:2.36.12-6.el8_8; Red Hat Enterprise Linux 9 0:2.42.6-6.el9_6. Check the vendor advisory for mitigations.

References

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