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The PurpleCircBuffer implementation in Pidgin (formerly Gaim) before 2.5.6 does not properly maintain a certain buffer, which allows remote attackers to cause a denial of service (memory corruption and application crash) via vectors involving the (1) XMPP or (2) Sametime protocol.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Centos_linux | — | Upgrade finch-develUpgrade libpurple-perlUpgrade pidgin-perlUpgrade libpurple-tclUpgrade finchUpgrade pidgin-develUpgrade libpurpleUpgrade libpurple-develUpgrade pidgin | Dec 1, 2016 | May 26, 2009 |
| Debian | — | Upgrade pidgin | Jul 30, 2024 | May 26, 2009 |
| Freebsd | — | Upgrade finchUpgrade pidginUpgrade libpurple | Dec 10, 2025 | Jun 16, 2009 |
| Gentoo Linux | — | Upgrade net-im/pidgin. | Oct 30, 2017 | May 26, 2009 |
| Suse | — | Upgrade libpurple-langUpgrade libpurple-develUpgrade pidginUpgrade libpurpleUpgrade finchUpgrade finch-develUpgrade pidgin-devel | Feb 17, 2015 | Jun 28, 2013 |
| Ubuntu | — | Upgrade pidgin | Nov 8, 2024 | May 26, 2009 |
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