NetBSD prior to commit ec8451e contains a signed integer overflow vulnerability in the cryptodev_op() function in sys/opencrypto/cryptodev.c where the local variable iov_len is declared as a signed int but assigned from an unsigned cop->dst_len value, causing undefined behavior when cop->dst_len exceeds INT_MAX. A local attacker with access to /dev/crypto and a compression session type can exploit this vulnerability by providing a dst_len value exceeding INT_MAX to trigger a kernel panic through NULL pointer dereference when CONFIG_SVS is disabled and corrupted UIO pointer arithmetic.
History

Tue, 19 May 2026 08:45:00 +0000

Type Values Removed Values Added
First Time appeared Netbsd
Netbsd src
Vendors & Products Netbsd
Netbsd src

Mon, 18 May 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 18 May 2026 18:15:00 +0000

Type Values Removed Values Added
Description NetBSD prior to commit ec8451e contains a signed integer overflow vulnerability in the cryptodev_op() function in sys/opencrypto/cryptodev.c where the local variable iov_len is declared as a signed int but assigned from an unsigned cop->dst_len value, causing undefined behavior when cop->dst_len exceeds INT_MAX. A local attacker with access to /dev/crypto and a compression session type can exploit this vulnerability by providing a dst_len value exceeding INT_MAX to trigger a kernel panic through NULL pointer dereference when CONFIG_SVS is disabled and corrupted UIO pointer arithmetic.
Title NetBSD Signed Integer Overflow in cryptodev_op via cryptodev.c
Weaknesses CWE-190
CWE-476
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 5.7, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-05-18T17:42:29.642Z

Updated: 2026-05-18T18:58:07.838Z

Reserved: 2026-03-16T18:11:41.759Z

Link: CVE-2026-32849

cve-icon Vulnrichment

Updated: 2026-05-18T18:57:13.890Z

cve-icon NVD

Status : Deferred

Published: 2026-05-18T18:17:23.377

Modified: 2026-05-18T19:42:03.353

Link: CVE-2026-32849

cve-icon Redhat

No data.