CVE-2026-58013

A flaw was found in GLib. A buffer over-read can occur in g_io_channel_read_line_backend() in the giochannel.c file when a custom line terminator with a length greater than one is set, causing memcmp to read past the GString buffer. This vulnerability can cause a minor information disclosure of 7 bytes or a denial of service when the buffer over-read crosses a page boundary.

A flaw was found in GLib. A buffer over-read can occur in g_io_channel_read_line_backend() in the giochannel.c file when a custom line terminator with a length greater than one is set, causing memcmp to read past the GString buffer. This vulnerability can cause a minor information disclosure of 7 bytes or a denial of service when the buffer over-read crosses a page boundary.

A flaw was found in GLib. A buffer over-read can occur in g_io_channel_read_line_backend() in the giochannel.c file when a custom line terminator with a length greater than one is set, causing memcmp to read past the GString buffer. This vulnerability can cause a minor information disclosure of 7 bytes or a denial of service when the buffer over-read crosses a page boundary.

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: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal() (CVE-2026-58010)

• glib: out-of-bounds read in glib/gdatetime.c:g_date_time_get_ymd via invalid GDateTime (CVE-2026-58011)

• glib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_next_char() (CVE-2026-58012)

• glib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend" (CVE-2026-58013)

• glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list" (CVE-2026-58014)

• glib: path traversal in glib/gio/gdbusauthmechanismsha1.c via keyring_lookup_entry and mechanism_client_data_receive (CVE-2026-58015)

• glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml" (CVE-2026-58016)

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: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal() (CVE-2026-58010)

• glib: out-of-bounds read in glib/gdatetime.c:g_date_time_get_ymd via invalid GDateTime (CVE-2026-58011)

• glib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_next_char() (CVE-2026-58012)

• glib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend" (CVE-2026-58013)

• glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list" (CVE-2026-58014)

• glib: path traversal in glib/gio/gdbusauthmechanismsha1.c via keyring_lookup_entry and mechanism_client_data_receive (CVE-2026-58015)

• GDBusServer: glib2: GDBusServer pre-authentication DoS via unbounded SASL line buffering (CVE-2026-15588)

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: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal() (CVE-2026-58010)

• glib: out-of-bounds read in glib/gdatetime.c:g_date_time_get_ymd via invalid GDateTime (CVE-2026-58011)

• glib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_next_char() (CVE-2026-58012)

• glib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend" (CVE-2026-58013)

• glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list" (CVE-2026-58014)

• glib: path traversal in glib/gio/gdbusauthmechanismsha1.c via keyring_lookup_entry and mechanism_client_data_receive (CVE-2026-58015)

• GDBusServer: glib2: GDBusServer pre-authentication DoS via unbounded SASL line buffering (CVE-2026-15588)

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: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal() (CVE-2026-58010)

• glib: out-of-bounds read in glib/gdatetime.c:g_date_time_get_ymd via invalid GDateTime (CVE-2026-58011)

• glib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_next_char() (CVE-2026-58012)

• glib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend" (CVE-2026-58013)

• glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list" (CVE-2026-58014)

• glib: path traversal in glib/gio/gdbusauthmechanismsha1.c via keyring_lookup_entry and mechanism_client_data_receive (CVE-2026-58015)

• GDBusServer: glib2: GDBusServer pre-authentication DoS via unbounded SASL line buffering (CVE-2026-15588)

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. A buffer over-read can occur in g_io_channel_read_line_backend() in the giochannel.c file when a custom line terminator with a length greater than one is set, causing memcmp to read past the GString buffer. This vulnerability can cause a minor information disclosure of 7 bytes or a denial of service when the buffer over-read crosses a page boundary.

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: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal() (CVE-2026-58010)
• glib: out-of-bounds read in glib/gdatetime.c:g_date_time_get_ymd via invalid GDateTime (CVE-2026-58011)
• glib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_next_char() (CVE-2026-58012)
• glib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend" (CVE-2026-58013)
• glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list" (CVE-2026-58014)
• glib: path traversal in glib/gio/gdbusauthmechanismsha1.c via keyring_lookup_entry and mechanism_client_data_receive (CVE-2026-58015)
• glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml" (CVE-2026-58016)

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: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal() (CVE-2026-58010)
• glib: out-of-bounds read in glib/gdatetime.c:g_date_time_get_ymd via invalid GDateTime (CVE-2026-58011)
• glib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_next_char() (CVE-2026-58012)
• glib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend" (CVE-2026-58013)
• glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list" (CVE-2026-58014)
• glib: path traversal in glib/gio/gdbusauthmechanismsha1.c via keyring_lookup_entry and mechanism_client_data_receive (CVE-2026-58015)
• GDBusServer: glib2: GDBusServer pre-authentication DoS via unbounded SASL line buffering (CVE-2026-15588)

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: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal() (CVE-2026-58010)
• glib: out-of-bounds read in glib/gdatetime.c:g_date_time_get_ymd via invalid GDateTime (CVE-2026-58011)
• glib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_next_char() (CVE-2026-58012)
• glib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend" (CVE-2026-58013)
• glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list" (CVE-2026-58014)
• glib: path traversal in glib/gio/gdbusauthmechanismsha1.c via keyring_lookup_entry and mechanism_client_data_receive (CVE-2026-58015)
• GDBusServer: glib2: GDBusServer pre-authentication DoS via unbounded SASL line buffering (CVE-2026-15588)

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: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal() (CVE-2026-58010)
• glib: out-of-bounds read in glib/gdatetime.c:g_date_time_get_ymd via invalid GDateTime (CVE-2026-58011)
• glib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_next_char() (CVE-2026-58012)
• glib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend" (CVE-2026-58013)
• glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list" (CVE-2026-58014)
• glib: path traversal in glib/gio/gdbusauthmechanismsha1.c via keyring_lookup_entry and mechanism_client_data_receive (CVE-2026-58015)
• GDBusServer: glib2: GDBusServer pre-authentication DoS via unbounded SASL line buffering (CVE-2026-15588)

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. A buffer over-read can occur in g_io_channel_read_line_backend() in the giochannel.c file when a custom line terminator with a length greater than one is set, causing memcmp to read past the GString buffer. This vulnerability can cause a minor information disclosure of 7 bytes or a denial of service when the buffer over-read crosses a page boundary.

• CVE-2026-58010: fix an off-by-one out-of-bounds read in GVariant normal-form checking (gvs_tuple_is_normal)
• CVE-2026-58011: reject out-of-range results in g_date_time_add_full() instead of returning an invalid GDateTime
• CVE-2026-58012: use byte-wise case changing in g_regex_replace() substitutions under G_REGEX_RAW
• CVE-2026-58013: avoid a memcmp() read past the buffer end in g_io_channel_read_line() with multi-byte line terminators

• CVE-2026-58010: fix an off-by-one out-of-bounds read in GVariant normal-form checking (gvs_tuple_is_normal)
• CVE-2026-58011: reject out-of-range results in g_date_time_add_full() instead of returning an invalid GDateTime
• CVE-2026-58012: use byte-wise case changing in g_regex_replace() substitutions under G_REGEX_RAW
• CVE-2026-58013: avoid a memcmp() read past the buffer end in g_io_channel_read_line() with multi-byte line terminators

• CVE-2026-58010: fix an off-by-one out-of-bounds read in GVariant normal-form checking (gvs_tuple_is_normal)
• CVE-2026-58011: reject out-of-range results in g_date_time_add_full() instead of returning an invalid GDateTime
• CVE-2026-58012: use byte-wise case changing in g_regex_replace() substitutions under G_REGEX_RAW
• CVE-2026-58013: avoid a memcmp() read past the buffer end in g_io_channel_read_line() with multi-byte line terminators

• SECURITY UPDATE: Multiple vulnerabilities in glib2
  • debian/patches/CVE-2026-58010.patch: Fix off-by-one out-of-bounds read in gvs_tuple_is_normal() during GVariant normal-form checking.
  • debian/patches/CVE-2026-58011.patch: Add missing range validation to g_date_time_add_full() to reject out-of-range GDateTime values.
  • debian/patches/CVE-2026-58012.patch: Fix buffer overflow in case-changing regex substitutions when G_REGEX_RAW is set.
  • debian/patches/CVE-2026-58013.patch: Fix memcmp() read past end of buffer with multi-byte line terminators in giochannel.
  • CVE-2026-58010
  • CVE-2026-58011
  • CVE-2026-58012
  • CVE-2026-58013

• SECURITY UPDATE: off-by-one out-of-bounds read in GVariant normal-form checking
  • debian/patches/CVE-2026-58010.patch: fix an off-by-one offset comparison in gvs_tuple_is_normal()
  • CVE-2026-58010
• SECURITY UPDATE: out-of-range GDateTime creation leading to out-of-bounds reads in getter functions
  • debian/patches/CVE-2026-58011.patch: add missing range validation to g_date_time_add_full()
  • CVE-2026-58011
• SECURITY UPDATE: buffer over-read in g_regex_replace() case-change substitutions under G_REGEX_RAW
  • debian/patches/CVE-2026-58012.patch: operate on bytes instead of UTF-8 characters when changing case of raw-mode matches
  • CVE-2026-58012
• SECURITY UPDATE: memcmp() buffer over-read in g_io_channel_read_line() with multi-byte line terminators
  • debian/patches/CVE-2026-58013.patch: check the remaining buffer length against the line terminator length before memcmp()
  • CVE-2026-58013

• SECURITY UPDATE: off-by-one out-of-bounds read in GVariant normal-form checking
  • debian/patches/CVE-2026-58010.patch: fix an off-by-one offset comparison in gvs_tuple_is_normal()
  • CVE-2026-58010
• SECURITY UPDATE: out-of-range GDateTime creation leading to out-of-bounds reads in getter functions
  • debian/patches/CVE-2026-58011.patch: add missing range validation to g_date_time_add_full()
  • CVE-2026-58011
• SECURITY UPDATE: buffer over-read in g_regex_replace() case-change substitutions under G_REGEX_RAW
  • debian/patches/CVE-2026-58012.patch: operate on bytes instead of UTF-8 characters when changing case of raw-mode matches
  • CVE-2026-58012
• SECURITY UPDATE: memcmp() buffer over-read in g_io_channel_read_line() with multi-byte line terminators
  • debian/patches/CVE-2026-58013.patch: check the remaining buffer length against the line terminator length before memcmp()
  • CVE-2026-58013

• CVE-2026-58010: fix an off-by-one out-of-bounds read in GVariant normal-form checking (gvs_tuple_is_normal)
• CVE-2026-58011: reject out-of-range results in g_date_time_add_full() instead of returning an invalid GDateTime
• CVE-2026-58012: use byte-wise case changing in g_regex_replace() substitutions under G_REGEX_RAW
• CVE-2026-58013: avoid a memcmp() read past the buffer end in g_io_channel_read_line() with multi-byte line terminators

• CVE-2026-58011: out-of-bounds read from an invalid GDateTime produced by g_date_time_add_full() without range validation, later read by g_date_time_get_ymd()
• CVE-2026-58013: heap buffer over-read in g_io_channel_read_line_backend() when a multi-byte line terminator is memcmp'd past the end of the buffer

• CVE-2026-58011: out-of-bounds read from an invalid GDateTime produced by g_date_time_add_full() without range validation, later read by g_date_time_get_ymd()
• CVE-2026-58013: heap buffer over-read in g_io_channel_read_line_backend() when a multi-byte line terminator is memcmp'd past the end of the buffer

• CVE-2026-58010: fix one-byte heap over-read in gvs_tuple_is_normal() by changing the offset bounds check from '>' to '>=' (glib/gvariant-serialiser.c)
• CVE-2026-58011: validate the days field in g_date_time_add_full() to prevent an out-of-bounds read in g_date_time_get_ymd() (glib/gdatetime.c)
• CVE-2026-58012: fix buffer over-read in g_regex_replace() with G_REGEX_RAW by splitting UTF-8 vs raw code paths in string_append() (glib/gregex.c)
• CVE-2026-58013: fix out-of-bounds read in g_io_channel_read_line_backend() by bounding memcmp() length to the remaining buffer (glib/giochannel.c)

This update for glib2 fixes the following issues:

• CVE-2026-58010: error during gvs_tuple_is_normal alignment validation could cause a 1-byte out-of-bounds read (bsc#1270009).
• CVE-2026-58011: invalid GDateTime in g_date_time_get_ymd could trigger a 2-byte out-of-bounds read (bsc#1270010).
• CVE-2026-58012: raw byte regex matches with UTF-8 functions during case-change replacements could cause an out-of- bounds read (bsc#1270016).
• CVE-2026-58013: multi-byte custom line terminator in g_io_channel_read_line_backend could trigger an out-of-bounds read (bsc#1270018).
• CVE-2026-58014: processing empty key file values in g_key_file_get_locale_string_list could cause a 1-byte out-of- bounds access (bsc#1270021).
• CVE-2026-58016: malformed D-Bus introspection XML could trigger an unsigned integer overflow (bsc#1270008).

Root has patched CVE-2026-58013 in the glib package for Root:Alpine:3.23. Multiple fixed versions available.

Root has patched CVE-2026-58013 in the glib2.0 package for Root:Debian:11. Multiple fixed versions available.

Root has patched CVE-2026-58013 in the glib2.0 package for Root:Debian:12. Multiple fixed versions available.

Root has patched CVE-2026-58013 in the glib2.0 package for Root:Debian:13. Multiple fixed versions available.

This update for glib2 fixes the following issues:

• CVE-2026-58010: error during gvs_tuple_is_normal alignment validation could cause a 1-byte out-of-bounds read (bsc#1270009).
• CVE-2026-58011: invalid GDateTime in g_date_time_get_ymd could trigger a 2-byte out-of-bounds read (bsc#1270010).
• CVE-2026-58012: raw byte regex matches with UTF-8 functions during case-change replacements could cause an out-of- bounds read (bsc#1270016).
• CVE-2026-58013: multi-byte custom line terminator in g_io_channel_read_line_backend could trigger an out-of-bounds read (bsc#1270018).
• CVE-2026-58014: processing empty key file values in g_key_file_get_locale_string_list could cause a 1-byte out-of- bounds access (bsc#1270021).
• CVE-2026-58016: malformed D-Bus introspection XML could trigger an unsigned integer overflow (bsc#1270008).

This update for glib2 fixes the following issues:

• CVE-2026-58010: error during gvs_tuple_is_normal alignment validation could cause a 1-byte out-of-bounds read (bsc#1270009).
• CVE-2026-58011: invalid GDateTime in g_date_time_get_ymd could trigger a 2-byte out-of-bounds read (bsc#1270010).
• CVE-2026-58012: raw byte regex matches with UTF-8 functions during case-change replacements could cause an out-of- bounds read (bsc#1270016).
• CVE-2026-58013: multi-byte custom line terminator in g_io_channel_read_line_backend could trigger an out-of-bounds read (bsc#1270018).
• CVE-2026-58014: processing empty key file values in g_key_file_get_locale_string_list could cause a 1-byte out-of- bounds access (bsc#1270021).
• CVE-2026-58016: malformed D-Bus introspection XML could trigger an unsigned integer overflow (bsc#1270008).

This update for glib2 fixes the following issues:

• CVE-2026-58010: error during gvs_tuple_is_normal alignment validation could cause a 1-byte out-of-bounds read (bsc#1270009).
• CVE-2026-58011: invalid GDateTime in g_date_time_get_ymd could trigger a 2-byte out-of-bounds read (bsc#1270010).
• CVE-2026-58012: raw byte regex matches with UTF-8 functions during case-change replacements could cause an out-of- bounds read (bsc#1270016).
• CVE-2026-58013: multi-byte custom line terminator in g_io_channel_read_line_backend could trigger an out-of-bounds read (bsc#1270018).
• CVE-2026-58014: processing empty key file values in g_key_file_get_locale_string_list could cause a 1-byte out-of- bounds access (bsc#1270021).
• CVE-2026-58016: malformed D-Bus introspection XML could trigger an unsigned integer overflow (bsc#1270008).

This update for glib2 fixes the following issues

• CVE-2026-58010: error during gvs_tuple_is_normal alignment validation could cause a 1-byte out-of-bounds read (bsc#1270009).
• CVE-2026-58011: invalid GDateTime in g_date_time_get_ymd could trigger a 2-byte out-of-bounds read (bsc#1270010).
• CVE-2026-58012: raw byte regex matches with UTF-8 functions during case-change replacements could cause an out-of- bounds read (bsc#1270016).
• CVE-2026-58013: multi-byte custom line terminator in g_io_channel_read_line_backend could trigger an out-of-bounds read (bsc#1270018).
• CVE-2026-58014: processing empty key file values in g_key_file_get_locale_string_list could cause a 1-byte out-of- bounds access (bsc#1270021).
• CVE-2026-58016: malformed D-Bus introspection XML could trigger an unsigned integer overflow (bsc#1270008).

This update for glib2 fixes the following issues:

• CVE-2026-58010: error during gvs_tuple_is_normal alignment validation could cause a 1-byte out-of-bounds read (bsc#1270009).
• CVE-2026-58011: invalid GDateTime in g_date_time_get_ymd could trigger a 2-byte out-of-bounds read (bsc#1270010).
• CVE-2026-58012: raw byte regex matches with UTF-8 functions during case-change replacements could cause an out-of- bounds read (bsc#1270016).
• CVE-2026-58013: multi-byte custom line terminator in g_io_channel_read_line_backend could trigger an out-of-bounds read (bsc#1270018).
• CVE-2026-58014: processing empty key file values in g_key_file_get_locale_string_list could cause a 1-byte out-of- bounds access (bsc#1270021).
• CVE-2026-58016: malformed D-Bus introspection XML could trigger an unsigned integer overflow (bsc#1270008).

This update for glib2 fixes the following issues:

• CVE-2026-58010: error during gvs_tuple_is_normal alignment validation could cause a 1-byte out-of-bounds read (bsc#1270009).
• CVE-2026-58011: invalid GDateTime in g_date_time_get_ymd could trigger a 2-byte out-of-bounds read (bsc#1270010).
• CVE-2026-58012: raw byte regex matches with UTF-8 functions during case-change replacements could cause an out-of- bounds read (bsc#1270016).
• CVE-2026-58013: multi-byte custom line terminator in g_io_channel_read_line_backend could trigger an out-of-bounds read (bsc#1270018).
• CVE-2026-58014: processing empty key file values in g_key_file_get_locale_string_list could cause a 1-byte out-of- bounds access (bsc#1270021).
• CVE-2026-58016: malformed D-Bus introspection XML could trigger an unsigned integer overflow (bsc#1270008).

This update for glib2 fixes the following issues:

• CVE-2026-58010: error during gvs_tuple_is_normal alignment validation could cause a 1-byte out-of-bounds read (bsc#1270009).
• CVE-2026-58011: invalid GDateTime in g_date_time_get_ymd could trigger a 2-byte out-of-bounds read (bsc#1270010).
• CVE-2026-58012: raw byte regex matches with UTF-8 functions during case-change replacements could cause an out-of- bounds read (bsc#1270016).
• CVE-2026-58013: multi-byte custom line terminator in g_io_channel_read_line_backend could trigger an out-of-bounds read (bsc#1270018).
• CVE-2026-58014: processing empty key file values in g_key_file_get_locale_string_list could cause a 1-byte out-of- bounds access (bsc#1270021).
• CVE-2026-58016: malformed D-Bus introspection XML could trigger an unsigned integer overflow (bsc#1270008).

It was discovered that GLib's GDBus authentication mechanism failed to enforce length limitations on data lines read from a client. An unauthenticated attacker could exploit this to cause a denial of service via resource exhaustion. (CVE-2026-15588)

It was discovered that the xdgmime library in GLib had a heap-based buffer overflow. An attacker-controlled MIME magic file could cause an out-of-bounds write on little-endian systems. (CVE-2026-16118)

It was discovered that GLib had an off-by-one error in the GVariant serialiser. An attacker could use this to cause an out-of-bounds read, leading to information disclosure or a denial of service. (CVE-2026-58010)

It was discovered that GLib had an out-of-bounds read in GDateTime. An attacker could use this to corrupt date output and cause a denial of service. (CVE-2026-58011)

It was discovered that GLib's g_regex_replace() function had a buffer over-read when used with the G_REGEX_RAW flag. An attacker could use this to cause information disclosure or a denial of service. (CVE-2026-58012)

It was discovered that GLib's GIOChannel had a buffer over-read when using a custom line terminator. An attacker could use this to cause information disclosure or a denial of service. (CVE-2026-58013)

It was discovered that GLib's GKeyFile had an off-by-one error when loading a key file with an empty value. An attacker could use this to cause an out-of-bounds access or a denial of service. (CVE-2026-58014)

It was discovered that GLib's DBUS_COOKIE_SHA1 authentication mechanism failed to validate the cookie_context parameter. A malicious D-Bus server could use this to read arbitrary files from the client. (CVE-2026-58015)

It was discovered that GLib's D-Bus introspection XML parser had a state confusion issue. An attacker could use this to cause an out-of-bounds read and denial of service. (CVE-2026-58016)