PT-2026-41713 · Netbsd · Netbsd

Nasm + 1 · Published 2026-05-18 · Updated 2026-05-20 · CVE-2026-32848

Positive Technologies (AI Summary)

CVSS v3.1

4.7

Medium

Base vector

AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions NetBSD versions prior to commit ec8451e

Description A race condition in the cryptodev op() function within the opencrypto subsystem allows local attackers to trigger a double-free condition on SMP (Symmetric Multiprocessing) systems. This occurs when CIOCCRYPT operations are issued concurrently using the same session identifier. Attackers can leverage mutable per-operation state within the csession struct to corrupt kernel heap memory.

Recommendations Update NetBSD to a version that includes commit ec8451e.

Exploit

Fix

Race Condition

Double Free

Weakness Enumeration

CWE-362

CWE-415

Related Identifiers

CVE-2026-32848

Affected Products

Netbsd

References · 7

• 🔥 https://nasm.re/posts/uaf_netbsd_crypto · Exploit
• https://github.com/NetBSD/src/commit/ec8451efc1565516aba9e7047e1a1a1ce7953a2f · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-32848 · Security Note
• https://twitter.com/infoflowcloud/status/2056994997459714412 · Twitter Post
• https://twitter.com/CVEnew/status/2056994241872826734 · Twitter Post
• https://t.me/CVEtracker/54149 · Telegram Post
• https://vulncheck.com/advisories/netbsd-cryptodev-race-condition-double-free-via-cryptodev-op · Note