Description
The g_markup_escape_text function in the SILC protocol plug-in in libpurple 2.10.0 and earlier, as used in Pidgin and possibly other products, allows remote attackers to cause a denial of service (crash) via invalid UTF-8 sequences that trigger use of invalid pointers and an out-of-bounds read, related to interactions with certain versions of glib2.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | pidgin | 2.10.1-1 | — |
| Debian 13 | pidgin | 2.10.1-1 | — |
| Debian 12 | pidgin | 2.10.1-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | finch +8 | 2.6.6-5.el5_7.1 | RHSA-2011:1371 |
| RHEL 4 | finch +8 | 2.6.6-7.el4 | RHSA-2011:1371 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | finch +8 | 2.6.6-5.el5_7.1 | RHSA-2011:1371 |
Advisories 1
- RHSA-2011:1371 Red Hat Security Advisory: pidgin security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- oval:org.mitre.oval:def:18034 vdb-entry signature
- http://developer.pidgin.im/viewmtn/revision/diff/be5e66abad2af29604bc794cc4c6600ab12751f3/with/7eb1f6d56cc58bbb5b56b7df53955d36b9b419b8
- https://bugzilla.redhat.com/show_bug.cgi?id=743481
- MDVSA-2011:183 vendor-advisory
- 46376 third-party-advisory
- http://developer.pidgin.im/ticket/14636
- RHSA-2011:1371 vendor-advisory
- http://pidgin.im/news/security/?id=56