GNOME GLib up to 2.88.0 giochannel.c g_io_channel_read_line_backend buffer over-read

Summaryinfo

A vulnerability was found in GNOME GLib up to 2.88.0. It has been declared as critical. The affected element is the function g_io_channel_read_line_backend of the file giochannel.c. Executing a manipulation can lead to buffer over-read. This vulnerability is tracked as CVE-2026-58013. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in GNOME GLib up to 2.88.0. This vulnerability affects the function g_io_channel_read_line_backend of the file giochannel.c. The manipulation with an unknown input leads to a buffer over-read vulnerability. The CWE definition for the vulnerability is CWE-126. The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer. As an impact it is known to affect confidentiality, and availability. CVE summarizes:

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.

The advisory is available at access.redhat.com. This vulnerability was named CVE-2026-58013 since 06/26/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 324017 (Linux Distros Unpatched Vulnerability : CVE-2026-58013), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.88.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (324017) and EUVD (EUVD-2026-40315). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• GNOME

Name

• GLib

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.24
• 2.25
• 2.26
• 2.27
• 2.28
• 2.29
• 2.30
• 2.31
• 2.32
• 2.33
• 2.34
• 2.35
• 2.36
• 2.37
• 2.38
• 2.39
• 2.40
• 2.41
• 2.42
• 2.43
• 2.44
• 2.45
• 2.46
• 2.47
• 2.48
• 2.49
• 2.50
• 2.51
• 2.52
• 2.53
• 2.54
• 2.55
• 2.56
• 2.57
• 2.58
• 2.59
• 2.60
• 2.61
• 2.62
• 2.63
• 2.64
• 2.65
• 2.66
• 2.67
• 2.68
• 2.69
• 2.70
• 2.71
• 2.72
• 2.73
• 2.74
• 2.75
• 2.76
• 2.77
• 2.78
• 2.79
• 2.80
• 2.81
• 2.82
• 2.83
• 2.84
• 2.85
• 2.86
• 2.87
• 2.88.0

License

• open-source

Website

• Vendor: https://www.gnome.org/

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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