CVE-2025-7039: Glib: buffer under-read on glib through glib/gfileutils.c via get_tmp_file()

Severity: low (CVSS 3.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-09-03 · updated 2026-10-18
Weakness: CWE-22

Description

A flaw was found in glib. An integer overflow during temporary file creation leads to an out-of-bounds memory access, allowing an attacker to potentially perform path traversal or access private temporary file content by creating symbolic links. This vulnerability allows a local attacker to manipulate file paths and access unauthorized data. The core issue stems from insufficient validation of file path lengths during temporary file operations.

Affected products

Red Hat Enterprise Linux 10: all versions

References

https://access.redhat.com/security/cve/CVE-2025-7039
https://bugzilla.redhat.com/show_bug.cgi?id=2392423
https://cert-portal.siemens.com/productcert/html/ssa-253495.html

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