CVE-2026-32848

NetBSD prior to commit ec8451e contains a race condition vulnerability in cryptodev_op() within the opencrypto subsystem that allows local attackers to trigger a double-free condition by concurrently issuing CIOCCRYPT operations on the same session identifier on SMP systems. Attackers can exploit mutable per-operation state embedded in the csession struct to corrupt kernel heap memory.

CVSS v3 4.7 MEDIUM

4.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/NetBSD/src/commit/ec8451efc1565516aba9e7047e1a1a1ce7953a2f
https://nasm.re/posts/uaf_netbsd_crypto/
https://www.vulncheck.com/advisories/netbsd-cryptodev-race-condition-double-free-via-cryptodev-op

Configurations

No configuration.

History

18 May 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-18 18:17

Updated : 2026-05-18 19:42

NVD link : CVE-2026-32848

Mitre link : CVE-2026-32848

CVE.ORG link : CVE-2026-32848

JSON object : View

Products Affected

No product.

CWE

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-415

Double Free

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