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A flaw was found in p11-kit. The RPC message attribute parsing functions p11_rpc_message_get_attribute() and p11_rpc_message_get_attribute_array_value() form a mutually-recursive call chain with no recursion depth limit when processing nested CKA_WRAP_TEMPLATE, CKA_UNWRAP_TEMPLATE, and CKA_DERIVE_TEMPLATE attributes. An unauthenticated attacker with local access to the p11-kit RPC Unix domain socket can send a specially crafted request with deeply nested template attributes, causing stack exhaustion and crashing the p11-kit server process and its dependent services.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade p11-kit-clientUpgrade p11-kit-trustUpgrade p11-kit-develUpgrade p11-kit-serverUpgrade p11-kit | Oct 11, 2026 | Aug 3, 2026 |
| Oracle_linux | — | Upgrade p11-kit-clientUpgrade p11-kit-develUpgrade p11-kitUpgrade p11-kit-serverUpgrade p11-kit-trust | Oct 22, 2026 | Jun 29, 2026 |
| Redhat_linux | — | Upgrade p11-kit-debuginfoNo solution existsUpgrade p11-kit-client-debuginfoUpgrade p11-kit-serverUpgrade p11-kit-develUpgrade p11-kitUpgrade p11-kit-trust-debuginfoUpgrade p11-kit-trustUpgrade p11-kit-clientUpgrade p11-kit-debugsourceUpgrade p11-kit-server-debuginfo | Jul 17, 2026 | Jun 23, 2026 |
| Rocky_linux | — | Upgrade p11-kit-trustUpgrade p11-kitUpgrade p11-kit-trust-debuginfoUpgrade p11-kit-serverUpgrade p11-kit-develUpgrade p11-kit-client-debuginfoUpgrade p11-kit-server-debuginfoUpgrade p11-kit-debugsourceUpgrade p11-kit-debuginfoUpgrade p11-kit-client | Aug 6, 2026 | Aug 4, 2026 |
| Ubuntu | — | Upgrade libp11-kit0 (Ubuntu Pro)Upgrade libp11-kit0Upgrade p11-kitUpgrade p11-kit-modulesUpgrade p11-kit (Ubuntu Pro)Upgrade p11-kit-modules (Ubuntu Pro) | Aug 30, 2026 | Aug 27, 2026 |
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