CVE-2026-58013
Glib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend"
Description
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.
INFO
Published Date :
June 30, 2026, 12:57 p.m.
Last Modified :
June 30, 2026, 12:57 p.m.
Remotely Exploit :
Yes !
Source :
redhat
Affected Products
The following products are affected by CVE-2026-58013
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 53f830b8-0a3f-465b-8143-3b8a9948e749 |
Solution
- Update GLib to the latest version.
- Apply vendor-provided patches.
- Review code for custom line terminator usage.
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CVE-2026-58013 vulnerability anywhere in the article.