CVE-2026-18938

A flaw was found in p11-kit. A local attacker, or one with equivalent access to a reachable RPC channel, could exploit an integer overflow vulnerability. By sending specially crafted messages, the attacker can cause the system to miscalculate memory allocation for nested attributes. This leads to a memory corruption issue, specifically a heap out-of-bounds write, which can crash the p11-kit RPC parsing process, resulting in a Denial of Service (DoS). This vulnerability is only exploitable on 32 bit systems.

CVSS v3 6.2 MEDIUM

6.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-18938
https://bugzilla.redhat.com/show_bug.cgi?id=2478995

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-07 09:16

Updated : 2026-08-14 19:07

NVD link : CVE-2026-18938

Mitre link : CVE-2026-18938

CVE.ORG link : CVE-2026-18938

JSON object : View

Products Affected

No product.

CWE

CWE-122

Heap-based Buffer Overflow

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