CVE-2025-7039

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.

GLib is a bundle of three (formerly five) low-level system libraries written in C and developed mainly by GNOME. GLib's code was separated from GTK, so it can be used by software other than GNOME and has been developed in parallel ever since.

Security Fix(es):

(CVE-2025-7039)

GLib is a bundle of three (formerly five) low-level system libraries written in C and developed mainly by GNOME. GLib's code was separated from GTK, so it can be used by software other than GNOME and has been developed in parallel ever since.

Security Fix(es):

(CVE-2025-7039)

GLib is a bundle of three (formerly five) low-level system libraries written in C and developed mainly by GNOME. GLib's code was separated from GTK, so it can be used by software other than GNOME and has been developed in parallel ever since.

Security Fix(es):

(CVE-2025-7039)

GLib is a bundle of three (formerly five) low-level system libraries written in C and developed mainly by GNOME. GLib's code was separated from GTK, so it can be used by software other than GNOME and has been developed in parallel ever since.

Security Fix(es):

(CVE-2025-7039)

GLib is a bundle of three (formerly five) low-level system libraries written in C and developed mainly by GNOME. GLib's code was separated from GTK, so it can be used by software other than GNOME and has been developed in parallel ever since.

Security Fix(es):

(CVE-2025-7039)

GLib is a bundle of three (formerly five) low-level system libraries written in C and developed mainly by GNOME. GLib's code was separated from GTK, so it can be used by software other than GNOME and has been developed in parallel ever since.

Security Fix(es):

(CVE-2025-7039)

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.

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.

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.

• CVE-2026-1489: fix integer overflow in Unicode case conversion functions
• CVE-2026-1484: fix integer overflow in GLib Base64 encoding
• CVE-2026-1485: fix buffer underflow in content type treemagic parsing
• CVE-2026-0988: fix integer overflow in g_buffered_input_stream_peek()
• CVE-2025-7039: fix integer overflow in temporary file creation

• CVE-2026-1489: fix integer overflow in Unicode case conversion functions
• CVE-2026-1484: fix integer overflow in GLib Base64 encoding
• CVE-2025-14512: fix integer overflow in escape_byte_string() for byte strings with many invalid characters
• CVE-2026-1485: fix buffer underflow in content type treemagic parsing
• CVE-2026-0988: fix integer overflow in g_buffered_input_stream_peek()
• CVE-2025-7039: fix integer overflow in temporary file creation

Glib prior to 2.82.5 is vulnerable to integer overflow and buffer under-read when parsing a very long invalid iso 8601 timestamp with g_date_time_new_from_iso8601(). (CVE-2025-3360) Buffer under-read on glib through glib/gfileutils.c via get_tmp_file(). (CVE-2025-7039) Integer overflow in g_escape_uri_string(). (CVE-2025-13601) Buffer underflow in gvariant parser leads to heap corruption. (CVE-2025-14087) Integer overflow in glib gio attribute escaping causes heap buffer overflow. (CVE-2025-14512) Denial of service via integer overflow in g_buffered_input_stream_peek(). (CVE-2026-0988)

These are all security issues fixed in the gio-branding-upstream-2.84.4-1.1 package on the GA media of openSUSE Tumbleweed.

This update for glib2 fixes the following issues:

Update to version 2.84.4.

Security issues fixed:

• CVE-2025-14512: integer overflow in the GIO escape_byte_string() function when processing malicious files or remote filesystem attribute values can lead to denial-of-service (bsc#1254878).
• CVE-2025-14087: buffer underflow in the GVariant parser bytestring_parse() and string_parse() functions when processing attacker-influenced data may lead to crash or code execution (bsc#1254662).
• CVE-2025-13601: heap-based buffer overflow in the g_escape_uri_string() function when processing strings with a large number of unacceptable characters may lead to crash or code execution (bsc#1254297).
• CVE-2025-7039: integer overflow when creating temporary files may lead to an out-of-bounds memory access that can be used for path traversal or exposure of sensitive content in a temporary file (bsc#1249055).

Other issues fixed and changes:

• Fix GFile leak in g_local_file_set_display_name during error handling.
• Fix incorrect output parameter handling in closure helper of g_settings_bind_with_mapping_closures.
• gfileutils: fix computation of temporary file name.
• Fix GFile leak in g_local_file_set_display_name().
• gthreadpool: catch pool_spawner creation failure.
• gio/filenamecompleter: fix leaks.
• gfilenamecompleter: fix g_object_unref() of undefined value.

This update for glib2 fixes the following issues:

• CVE-2025-7039: Fixed Buffer Under-read in gfileutils.c (bsc#1249055)

This update for glib2 fixes the following issues:

• CVE-2025-7039: Fixed Buffer Under-read in gfileutils.c (bsc#1249055)

This update for glib2 fixes the following issues:

• CVE-2025-7039: Fixed buffer under-read on glib through glib/gfileutils.c via get_tmp_file() (bsc#1249055)

This update for glib2 fixes the following issues:

• CVE-2025-7039: Fixed buffer under-read on glib through glib/gfileutils.c via get_tmp_file() (bsc#1249055)

This update for glib2 fixes the following issues:

• CVE-2025-7039: Fixed buffer under-read on glib through glib/gfileutils.c via get_tmp_file() (bsc#1249055)

This update for glib2 fixes the following issues:

• CVE-2025-7039: Fixed buffer under-read on glib through glib/gfileutils.c via get_tmp_file() (bsc#1249055)

This update for glib2 fixes the following issues:

Update to version 2.84.4.

Security issues fixed:

• CVE-2025-14512: integer overflow in the GIO escape_byte_string() function when processing malicious files or remote filesystem attribute values can lead to denial-of-service (bsc#1254878).
• CVE-2025-14087: buffer underflow in the GVariant parser bytestring_parse() and string_parse() functions when processing attacker-influenced data may lead to crash or code execution (bsc#1254662).
• CVE-2025-13601: heap-based buffer overflow in the g_escape_uri_string() function when processing strings with a large number of unacceptable characters may lead to crash or code execution (bsc#1254297).
• CVE-2025-7039: integer overflow when creating temporary files may lead to an out-of-bounds memory access that can be used for path traversal or exposure of sensitive content in a temporary file (bsc#1249055).

Other issues fixed and changes:

• Fix GFile leak in g_local_file_set_display_name during error handling.
• Fix incorrect output parameter handling in closure helper of g_settings_bind_with_mapping_closures.
• gfileutils: fix computation of temporary file name.
• Fix GFile leak in g_local_file_set_display_name().
• gthreadpool: catch pool_spawner creation failure.
• gio/filenamecompleter: fix leaks.
• gfilenamecompleter: fix g_object_unref() of undefined value.

This update for glib2 fixes the following issues:

Update to version 2.84.4.

Security issues fixed:

• CVE-2025-14512: integer overflow in the GIO escape_byte_string() function when processing malicious files or remote filesystem attribute values can lead to denial-of-service (bsc#1254878).
• CVE-2025-14087: buffer underflow in the GVariant parser bytestring_parse() and string_parse() functions when processing attacker-influenced data may lead to crash or code execution (bsc#1254662).
• CVE-2025-13601: heap-based buffer overflow in the g_escape_uri_string() function when processing strings with a large number of unacceptable characters may lead to crash or code execution (bsc#1254297).
• CVE-2025-7039: integer overflow when creating temporary files may lead to an out-of-bounds memory access that can be used for path traversal or exposure of sensitive content in a temporary file (bsc#1249055).

Other issues fixed and changes:

• Fix GFile leak in g_local_file_set_display_name during error handling.
• Fix incorrect output parameter handling in closure helper of g_settings_bind_with_mapping_closures.
• gfileutils: fix computation of temporary file name.
• Fix GFile leak in g_local_file_set_display_name().
• gthreadpool: catch pool_spawner creation failure.
• gio/filenamecompleter: fix leaks.
• gfilenamecompleter: fix g_object_unref() of undefined value.

It was discovered that GLib incorrectly handled escaping URI strings. An attacker could use this issue to cause GLib to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2025-13601)

It was discovered that GLib incorrectly parsed certain GVariants. An attacker could use this issue to cause GLib to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2025-14087)

It was discovered that GLib incorrectly parsed certain long invalid ISO 8601 timestamps. An attacker could possibly use this issue to cause GLib to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2025-3360)

It was discovered that GLib incorrectly handled GString memory operations. An attacker could use this issue to cause GLib to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 24.04 LTS and Ubuntu 25.04. (CVE-2025-6052)

It was discovered that GLib incorrectly handled creating temporary files. An attacker could possibly use this issue to access unauthorized data. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 25.04. (CVE-2025-7039)