NetBSD cryptodev Race Condition Double-Free via cryptodev_op()_CVE-2026-32848

5.7 / 10

MEDIUM

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Description

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.

Basic Information

ID CVE-2026-32848

Source VulnCheck

Published May 18, 2026 at 17:52

Affected Product

Vendor NetBSD

Product src

Affected Versions NetBSD src 0

CWE Classification

CWE-415 CWE-362

References

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    "lastseen": "",
    "description": "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.",
    "published": "2026-05-18T17:52:55.753Z",
    "modified": "2026-05-18T17:52:55.753Z",
    "type": "cve",
    "title": "NetBSD cryptodev Race Condition Double-Free via cryptodev_op()",
    "source": "VulnCheck",
    "references": "https://nasm.re/posts/uaf_netbsd_crypto/\nhttps://github.com/NetBSD/src/commit/ec8451efc1565516aba9e7047e1a1a1ce7953a2f\nhttps://www.vulncheck.com/advisories/netbsd-cryptodev-race-condition-double-free-via-cryptodev-op",
    "id": "CVE-2026-32848",
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    "cvelist": null,
    "sourceData": "NetBSD src 0",
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    "cvss": {
        "score": 5.7,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
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        "baseScore": 0,
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        "privilegesRequired": "",
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        "cvssV3": {
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    "category_name": "CVE",
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    "product": "src",
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