Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-53706— PREVAIL: ALU32 pointer arithmetic accepted without is64 gate — verifier emits false PASS for pointer-corrupting programs

Quick assessment

Affected
vbpf prevail
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.

vbpf PREVAIL是vbpf组织的一款功能丰富的软件平台。 vbpf PREVAIL 0.2.4之前版本存在数字错误漏洞，该漏洞源于prevail eBPF验证器接受操作指针类型寄存器的ALU32 ADD和SUB指令时未检查is64标志，可能导致程序通过验证但在运行时出错或行为异常。

CVSS 8.8 · High EPSS 0.51% · P43

Affected Version Matrix 1

VendorProduct Version RangeStatus
vbpf prevail < 0.2.4 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-53706

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
PREVAIL: ALU32 pointer arithmetic accepted without is64 gate — verifier emits false PASS for pointer-corrupting programs
Source: CVE Program / CVE List V5
Vulnerability Description
PREVAIL is a Polynomial-Runtime EBPF Verifier using an Abstract Interpretation Layer. Prior to version 0.2.4, the prevail eBPF verifier accepts ALU32 ADD and SUB instructions that operate on pointer-typed registers without checking the is64 flag. Because ALU32 arithmetic zero-extends the 32-bit result, the upper half of any pointer is silently destroyed at runtime, yet prevail marks the program as verified safe. Any caller that can submit an eBPF program for verification — including unprivileged users on kernels that permit BPF program loading — can produce a program that passes verification but faults or misbehaves at runtime. This issue has been patched in version 0.2.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
数值计算不正确
Source: CVE Program / CVE List V5
Vulnerability Title
vbpf PREVAIL 数字错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
vbpf PREVAIL是vbpf组织的一款功能丰富的软件平台。 vbpf PREVAIL 0.2.4之前版本存在数字错误漏洞，该漏洞源于prevail eBPF验证器接受操作指针类型寄存器的ALU32 ADD和SUB指令时未检查is64标志，可能导致程序通过验证但在运行时出错或行为异常。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
vbpf prevail < 0.2.4 -

II. Public POCs for CVE-2026-53706

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-53706

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-53706 (1)

Vendor Advisories for CVE-2026-53706 (1)

Vendor Pages for CVE-2026-53706 (1)

Same Patch Batch · vbpf · 2026-09-02 · 3 CVEs total

CVE-2026-53671 9.3 CRITICAL PREVAIL: Context-write no-op in do_mem_store allows unsafe eBPF programs to pass verificat
CVE-2026-53670 9.3 CRITICAL PREVAIL: Non-singleton typeset in add() skips offset update, allowing OOB access to pass e

IV. Related Vulnerabilities

Same product: prevail
Same vendor: vbpf
Same weakness: CWE-682