CVE-2025-14512

A flaw was found in glib. This vulnerability allows a heap buffer overflow and denial-of-service (DoS) via an integer overflow in GLib's GIO (GLib Input/Output) escape_byte_string() function when processing malicious file or remote filesystem attribute values.

A flaw was found in glib. This vulnerability allows a heap buffer overflow and denial-of-service (DoS) via an integer overflow in GLib's GIO (GLib Input/Output) escape_byte_string() function when processing malicious file or remote filesystem attribute values.

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):

A vulnerability was found in GNOME GLib (the affected version unknown). It has been declared as critical. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.(CVE-2025-14087)

A flaw was found in glib. This vulnerability allows a heap buffer overflow and denial-of-service (DoS) via an integer overflow in GLib's GIO (GLib Input/Output) escape_byte_string() function when processing malicious file or remote filesystem attribute values.(CVE-2025-14512)

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):

A vulnerability was found in GNOME GLib (the affected version unknown). It has been declared as critical. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.(CVE-2025-14087)

A flaw was found in glib. This vulnerability allows a heap buffer overflow and denial-of-service (DoS) via an integer overflow in GLib's GIO (GLib Input/Output) escape_byte_string() function when processing malicious file or remote filesystem attribute values.(CVE-2025-14512)

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):

A vulnerability was found in GNOME GLib (the affected version unknown). It has been declared as critical. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.(CVE-2025-14087)

A flaw was found in glib. This vulnerability allows a heap buffer overflow and denial-of-service (DoS) via an integer overflow in GLib's GIO (GLib Input/Output) escape_byte_string() function when processing malicious file or remote filesystem attribute values.(CVE-2025-14512)

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):

A vulnerability was found in GNOME GLib (the affected version unknown). It has been declared as critical. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.(CVE-2025-14087)

A flaw was found in glib. This vulnerability allows a heap buffer overflow and denial-of-service (DoS) via an integer overflow in GLib's GIO (GLib Input/Output) escape_byte_string() function when processing malicious file or remote filesystem attribute values.(CVE-2025-14512)

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):

A vulnerability was found in GNOME GLib (the affected version unknown). It has been declared as critical. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.(CVE-2025-14087)

A flaw was found in glib. This vulnerability allows a heap buffer overflow and denial-of-service (DoS) via an integer overflow in GLib's GIO (GLib Input/Output) escape_byte_string() function when processing malicious file or remote filesystem attribute values.(CVE-2025-14512)

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):

A vulnerability was found in GNOME GLib (the affected version unknown). It has been declared as critical. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.(CVE-2025-14087)

A flaw was found in glib. This vulnerability allows a heap buffer overflow and denial-of-service (DoS) via an integer overflow in GLib's GIO (GLib Input/Output) escape_byte_string() function when processing malicious file or remote filesystem attribute values.(CVE-2025-14512)

A flaw was found in GLib. An off-by-one error can occur in the gvs_tuple_is_normal function in the glib/gvariant-serialiser.c file when doing an alignment padding check because the bounds check uses > instead of >=, causing an out-of-bounds read of only 1 byte. This issue can cause a minor information disclosure of 1 byte and a denial of service when the out-of-bounds read crosses a page boundary.(CVE-2026-58010)

A flaw was found in GLib. An out-of-bounds read of only 2 bytes can occur in the g_date_time_get_ymd function in the glib/gdatetime.c file when an invalid GDateTime object produced by the g_date_time_add_full function is processed. This flaw can corrupt the date output and potentially cause logic errors that may lead to a denial of service.(CVE-2026-58011)

A flaw was found in GLib. A buffer over-read can occur in the g_regex_replace function when used with the G_REGEX_RAW compile flag and case-change replacement escapes because the string_append function processes matched substrings using UTF-8 functions that assume valid UTF-8 input, even when the string is treated as raw bytes. This vulnerability can cause a minor information disclosure of 1-5 bytes and a denial of service when the buffer over-read crosses a page boundary.(CVE-2026-58012)

A flaw was found in GLib. An off-by-one error can occur in the g_key_file_get_locale_string_list function in the gkeyfile.c file when loading a key file with an empty value. This flaw can cause an out-of-bounds access of 1 byte or a denial of service when the out-of-bounds access crosses a page boundary.(CVE-2026-58014)

A flaw was found in GLib. The D-Bus client-side implementation of the DBUS_COOKIE_SHA1 SASL authentication mechanism does not validate the cookie_context parameter received from the server. A malicious D-Bus server can supply a cookie_context containing path traversal sequences, causing the client to read an arbitrary file and exfiltrate sensitive data by verifying guessed file contents against a generated hash.(CVE-2026-58015)

A flaw was found in GLib. A state confusion issue exists in g_dbus_node_info_new_for_xml() in the gio/gdbusintrospection.c file when processing malformed D-Bus introspection XML, specifically with a <node> element nested within other elements like <method>, <signal>, <property> or <arg>. This issue can cause an unsigned integer overflow and lead to an out-of-bounds read, resulting in a denial of service.(CVE-2026-58016)

GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures.

Security Fix(es):

• glib: GLib: Buffer underflow in GVariant parser leads to heap corruption (CVE-2025-14087)

• glib: Integer Overflow in GLib GIO Attribute Escaping Causes Heap Buffer Overflow (CVE-2025-14512)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures.

Security Fix(es):

• glib: GLib: Buffer underflow in GVariant parser leads to heap corruption (CVE-2025-14087)

• glib: Integer Overflow in GLib GIO Attribute Escaping Causes Heap Buffer Overflow (CVE-2025-14512)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures.

Security Fix(es):

• glib: GLib: Buffer underflow in GVariant parser leads to heap corruption (CVE-2025-14087)

• glib: Integer Overflow in GLib GIO Attribute Escaping Causes Heap Buffer Overflow (CVE-2025-14512)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures.

Security Fix(es):

• glib: GLib: Buffer underflow in GVariant parser leads to heap corruption (CVE-2025-14087)

• glib: Integer Overflow in GLib GIO Attribute Escaping Causes Heap Buffer Overflow (CVE-2025-14512)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures.

Security Fix(es):

• glib: GLib: Buffer underflow in GVariant parser leads to heap corruption (CVE-2025-14087)

• glib: Integer Overflow in GLib GIO Attribute Escaping Causes Heap Buffer Overflow (CVE-2025-14512)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

A flaw was found in glib. This vulnerability allows a heap buffer overflow and denial-of-service (DoS) via an integer overflow in GLib's GIO (GLib Input/Output) escape_byte_string() function when processing malicious file or remote filesystem attribute values.

GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures.

Security Fix(es):

• glib: GLib: Buffer underflow in GVariant parser leads to heap corruption (CVE-2025-14087)
• glib: Integer Overflow in GLib GIO Attribute Escaping Causes Heap Buffer Overflow (CVE-2025-14512)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures.

Security Fix(es):

• glib: GLib: Buffer underflow in GVariant parser leads to heap corruption (CVE-2025-14087)
• glib: Integer Overflow in GLib GIO Attribute Escaping Causes Heap Buffer Overflow (CVE-2025-14512)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures.

Security Fix(es):

• glib: GLib: Buffer underflow in GVariant parser leads to heap corruption (CVE-2025-14087)
• glib: Integer Overflow in GLib GIO Attribute Escaping Causes Heap Buffer Overflow (CVE-2025-14512)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures.

Security Fix(es):

• glib: GLib: Buffer underflow in GVariant parser leads to heap corruption (CVE-2025-14087)
• glib: Integer Overflow in GLib GIO Attribute Escaping Causes Heap Buffer Overflow (CVE-2025-14512)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures.

Security Fix(es):

• glib: GLib: Buffer underflow in GVariant parser leads to heap corruption (CVE-2025-14087)
• glib: Integer Overflow in GLib GIO Attribute Escaping Causes Heap Buffer Overflow (CVE-2025-14512)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

A flaw was found in glib. This vulnerability allows a heap buffer overflow and denial-of-service (DoS) via an integer overflow in GLib's GIO (GLib Input/Output) escape_byte_string() function when processing malicious file or remote filesystem attribute values.

A flaw was found in glib. This vulnerability allows a heap buffer overflow and denial-of-service (DoS) via an integer overflow in GLib's GIO (GLib Input/Output) escape_byte_string() function when processing malicious file or remote filesystem attribute values.

• CVE-2025-14087: fix heap corruption in GLib GVariant parser by preventing integer overflows and unsafe buffer size calculations
• CVE-2025-14512: fix integer overflow in escape_byte_string() for byte strings with many invalid characters

• SECURITY UPDATE: Buffer underflow in GVariant parser leads to heap corruption
  • debian/patches/CVE-2025-14087_14512.patch: Fix integer overflows in GVariant text format parser when processing input longer than INT_MAX
  • CVE-2025-14087
• SECURITY UPDATE: Integer overflow in escape_byte_string() leads to heap buffer overflow
  • debian/patches/CVE-2025-14087_14512.patch: Fix integer overflow in escape_byte_string() for byte strings with many invalid characters
  • CVE-2025-14512

• SECURITY UPDATE: Buffer underflow in GVariant parser leads to heap corruption
  • debian/patches/CVE-2025-14087_14512.patch: Fix integer overflows in GVariant text format parser when processing input longer than INT_MAX
  • CVE-2025-14087
• SECURITY UPDATE: Integer overflow in escape_byte_string() leads to heap buffer overflow
  • debian/patches/CVE-2025-14087_14512.patch: Fix integer overflow in escape_byte_string() for byte strings with many invalid characters
  • CVE-2025-14512

• 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)

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.

Root has patched CVE-2025-14512 in the rootio-glib2.0 package for Root:Debian:12. Multiple fixed versions available.

Root has patched CVE-2025-14512 in the rootio-glib2.0 package for Root:Debian:13. Multiple fixed versions available.

This update for glib2 fixes the following issues:

• 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).

This update for glib2 fixes the following issues:

• 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).

This update for glib2 fixes the following issues:

• 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).

This update for glib2 fixes the following issues:

• 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).