[DRE-maint] Bug#1108237: ruby-nokogiri: CVE-2025-6494

[Salvatore Bonaccorso]

Source: ruby-nokogiri
Version: 1.18.2+dfsg-1
Severity: important
Tags: security upstream
Forwarded: https://github.com/sparklemotion/nokogiri/issues/3508
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for ruby-nokogiri.

CVE-2025-6494[0]:
| A vulnerability was found in sparklemotion nokogiri up to 1.18.7. It
| has been classified as problematic. This affects the function
| hashmap_get_with_hash of the file gumbo-parser/src/hashmap.c. The
| manipulation leads to heap-based buffer overflow. An attack has to
| be approached locally. The exploit has been disclosed to the public
| and may be used.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2025-6494
    https://www.cve.org/CVERecord?id=CVE-2025-6494
[1] https://github.com/sparklemotion/nokogiri/issues/3508

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore