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CVE-2026-101310— Multiple vulnerabilities in bhyve device models

Quick assessment

Affected
FreeBSD FreeBSD
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

HDA 音频设备模型在启动音频流时，未对长度为零的描述符列表（BDL）条目进行校验。当存在长度为为零的 BDL 条目时，会在 DMA 传输处理过程中导致越界读取或越界写入。此外，BDL 字段在通过校验后，仍可能被客户机（guest）修改。 恶意客户机可能导致 bhyve 进程崩溃，或在受 bhyve Capsicum 沙箱限制的前提下，在运行虚拟机的宿主机用户空间上下文中执行任意代码。

AI Predicted 8.8 Difficulty: Hard EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection

Affected Version Matrix 3

VendorProduct Version RangeStatus
FreeBSD FreeBSD 15.1-RELEASE< p5 affected
14.5-RELEASE< p2 affected
14.4-RELEASE< p11 affected
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I. Basic Information for CVE-2026-101310

Vulnerability Information
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Vulnerability Title
Multiple vulnerabilities in bhyve device models
Source: CVE Program / CVE List V5
Vulnerability Description
The HDA audio device model did not check for zero-length Buffer Descriptor List (BDL) entries when starting a stream. A zero-length entry caused an out-of-bounds read or write during DMA transfer processing. BDL fields were also subject to modification by the guest after validation. A malicious guest can crash the bhyve process or potentially execute arbitrary code in the host userspace context running the virtual machine, subject to bhyve's Capsicum sandbox.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
缓冲区上溢读取
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
FreeBSD FreeBSD 15.1-RELEASE ~ p5 -

II. Public POCs for CVE-2026-101310

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III. Intelligence Information for CVE-2026-101310

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Other References for CVE-2026-101310 (1)

Same Patch Batch · FreeBSD · 2026-10-15 · 13 CVEs total

CVE-2026-58099 Memory safety bugs in kqueue copy-on-fork implementation
CVE-2026-58098 Heap out-of-bounds access in semop(2)
CVE-2026-58100 Memory safety bugs in kqueue copy-on-fork implementation
CVE-2026-101302 Remote DoS via receive-side kernel TLS
CVE-2026-101306 Multiple jail filesystem root escapes
CVE-2026-101305 Multiple jail filesystem root escapes
CVE-2026-101304 Multiple jail filesystem root escapes
CVE-2026-101303 IPv6 UDP sendto(2) bypasses jail loopback restriction
CVE-2026-101307 Remotely triggerable buffer overflow in tcp_rack
CVE-2026-101308 TOCTOU race between sound(4) buffer resizing and mmap
CVE-2026-101311 Multiple vulnerabilities in bhyve device models
CVE-2026-101309 Multiple vulnerabilities in bhyve device models

IV. Related Vulnerabilities

Same product: FreeBSD
Same vendor: FreeBSD
Same weakness: CWE-126

V. Comments for CVE-2026-101310

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