CVE-2026-2100
MediumCVSS 5.3Exploitation Probability (EPSS)
Elevated risk65th percentile - higher than 65% of all known CVEs
Summary
A flaw was found in p11-kit where a remote attacker could call 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.
Risk Assessment
This vulnerability may cause an application-level denial of service or other unpredictable system states, threatening the availability of services using p11-kit.
Recommendation
Update p11-kit to the patched version immediately and monitor vendor security advisories.
Other vulnerabilities in p11-kit
See all- CVE-2026-18938Medium
An integer overflow vulnerability was found in p11-kit. A local attacker, or one with access to a reachable RPC channel, can send specially crafted messages to cause miscalculated memory allocation for nested attributes. This leads to a heap out-of-bounds write, crashing the p11-kit RPC parsing process and resulting in a Denial of Service (DoS). The vulnerability is only exploitable on 32-bit systems.
- CVE-2026-13757Medium
A flaw was found in p11-kit where the RPC message attribute parsing functions lack recursion depth limits when processing nested template attributes. An unauthenticated attacker with local access to the Unix domain socket can send a crafted request causing stack exhaustion and crashing the p11-kit server and its dependent services.
Original NVD description (English source)
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.