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.

Multiple Vulnerabilities in GNOME GLib

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1942 advisory.

    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. 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-2026-58013)

    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)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-8e39f35701 advisory.

    Backport fix for CVE-2026-58016.

    ----

    Update to glib-2.86.5.

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-7bf2937528 advisory.

    Backport fix for CVE-2026-58016.

    ----

    Update to glib-2.88.2.

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
328478	Amazon Linux 2023 : glib2, glib2-devel, glib2-static (ALAS2023-2026-1942)	Nessus	Amazon Linux Local Security Checks	critical
327554	Fedora 43 : mingw-glib2 (2026-8e39f35701)	Nessus	Fedora Local Security Checks	critical
327486	Fedora 44 : mingw-glib2 (2026-7bf2937528)	Nessus	Fedora Local Security Checks	critical
324022	Linux Distros Unpatched Vulnerability : CVE-2026-58011	Nessus	Misc.	high

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