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I. Basic Information for CVE-2026-31676
Vulnerability Information

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Vulnerability Title
rxrpc: only handle RESPONSE during service challenge
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: rxrpc: only handle RESPONSE during service challenge Only process RESPONSE packets while the service connection is still in RXRPC_CONN_SERVICE_CHALLENGING. Check that state under state_lock before running response verification and security initialization, then use a local secured flag to decide whether to queue the secured-connection work after the state transition. This keeps duplicate or late RESPONSE packets from re-running the setup path and removes the unlocked post-transition state test.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞,该漏洞源于rxrpc服务挑战状态中未正确检查状态,可能导致重复或延迟RESPONSE包重新执行设置路径。
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
VendorProductAffected VersionsCPESubscribe
LinuxLinux 17926a79320afa9b95df6b977b40cca6d8713cea ~ a6bcf8010af093fe04f7100562e9542ab7882585 -
LinuxLinux 2.6.22 -
II. Public POCs for CVE-2026-31676
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III. Intelligence Information for CVE-2026-31676
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IV. Related Vulnerabilities
V. Comments for CVE-2026-31676

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