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CVE-2026-13757

P11-kit: stack exhaustion via unbounded recursion in rpc attribute parsing

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.

CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed
Vendors
P11-kit Project Redhat
Products
P11-kit Cert Manager Cost Management and 10 more
CVE-2026-2100

P11-kit: null dereference via c_derivekey with specific null parameters

A flaw was found in p11-kit. A remote attacker could exploit this vulnerability by calling the C_DeriveKey function on a remote token with specific IBM kyber or IBM btc derive mechanism parameters set to NULL. This could lead to the RPC-client attempting to return an uninitialized value, potentially resulting in a NULL dereference or undefined behavior. This issue may cause an application level denial of service or other unpredictable system states.

CVSS 3.1 · 5.3 Medium EPSS 1.3% KEV · Not listed
Vendors
P11-kit Project Redhat
Products
P11-kit Cert-manager Operator Cert Manager and 11 more
CVE-2020-29363

p11-kit: out-of-bounds write in p11_rpc_buffer_get_byte_array_value function in rpc-message.c

An issue was discovered in p11-kit 0.23.6 through 0.23.21. A heap-based buffer overflow has been discovered in the RPC protocol used by p11-kit server/remote commands and the client library. When the remote entity supplies a serialized byte array in a CK_ATTRIBUTE, the receiving entity may not allocate sufficient length for the buffer to store the deserialized value.

CVSS 3.1 · 7.5 High EPSS 3.5% KEV · Not listed
Vendors
Debian Oracle P11-kit Project and 1 more
Products
Debian Linux Communications Cloud Native Core Policy P11-kit and 1 more
CVE-2020-29362

p11-kit: out-of-bounds read in p11_rpc_buffer_get_byte_array function in rpc-message.c

An issue was discovered in p11-kit 0.21.1 through 0.23.21. A heap-based buffer over-read has been discovered in the RPC protocol used by thep11-kit server/remote commands and the client library. When the remote entity supplies a byte array through a serialized PKCS#11 function call, the receiving entity may allow the reading of up to 4 bytes of memory past the heap allocation.

CVSS 3.1 · 5.3 Medium EPSS 2.3% KEV · Not listed
Vendors
P11-kit Project Redhat
Products
P11-kit Enterprise Linux
CVE-2020-29361

p11-kit: integer overflow when allocating memory for arrays or attributes and object identifiers

An issue was discovered in p11-kit 0.21.1 through 0.23.21. Multiple integer overflows have been discovered in the array allocations in the p11-kit library and the p11-kit list command, where overflow checks are missing before calling realloc or calloc.

CVSS 3.1 · 7.5 High EPSS 3.5% KEV · Not listed
Vendors
Debian P11-kit Project Redhat
Products
Debian Linux P11-kit Enterprise Linux