一、 漏洞 CVE-2025-38089 基础信息
漏洞信息
# Sunrpc：在svc auth处理过程中将SVC_GARBAGE作为认证错误处理
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提示
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神龙会尽力确保数据准确，但也请结合实际情况进行甄别与判断。
神龙祝您一切顺利！
漏洞标题
sunrpc: handle SVC_GARBAGE during svc auth processing as auth error
来源：美国国家漏洞数据库 NVD
漏洞描述信息
In the Linux kernel, the following vulnerability has been resolved:
sunrpc: handle SVC_GARBAGE during svc auth processing as auth error
tianshuo han reported a remotely-triggerable crash if the client sends a
kernel RPC server a specially crafted packet. If decoding the RPC reply
fails in such a way that SVC_GARBAGE is returned without setting the
rq_accept_statp pointer, then that pointer can be dereferenced and a
value stored there.
If it's the first time the thread has processed an RPC, then that
pointer will be set to NULL and the kernel will crash. In other cases,
it could create a memory scribble.
The server sunrpc code treats a SVC_GARBAGE return from svc_authenticate
or pg_authenticate as if it should send a GARBAGE_ARGS reply. RFC 5531
says that if authentication fails that the RPC should be rejected
instead with a status of AUTH_ERR.
Handle a SVC_GARBAGE return as an AUTH_ERROR, with a reason of
AUTH_BADCRED instead of returning GARBAGE_ARGS in that case. This
sidesteps the whole problem of touching the rpc_accept_statp pointer in
this situation and avoids the crash.
来源：美国国家漏洞数据库 NVD
CVSS信息
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来源：美国国家漏洞数据库 NVD
漏洞类别
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来源：美国国家漏洞数据库 NVD
漏洞标题
Linux kernel 安全漏洞
来源：中国国家信息安全漏洞库 CNNVD
漏洞描述信息
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，该漏洞源于处理SVC_GARBAGE时未正确设置rq_accept_statp指针，可能导致空指针取消引用或内存损坏。
来源：中国国家信息安全漏洞库 CNNVD
CVSS信息
N/A
来源：中国国家信息安全漏洞库 CNNVD
漏洞类别
其他
来源：中国国家信息安全漏洞库 CNNVD
二、漏洞 CVE-2025-38089 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|---|---|---|
| 1 | PoC for CVE-2025-38089 | https://github.com/keymaker-arch/NFSundown | POC详情 |
三、漏洞 CVE-2025-38089 的情报信息
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标题： sunrpc: handle SVC_GARBAGE during svc auth processing as auth error - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接
标签：
神龙速读
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标题： oss-security - CVE-2025-38089: Linux kernel: NFS server remote DoS via NULL pointer dereference -- 🔗来源链接
标签：
神龙速读
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- https://nvd.nist.gov/vuln/detail/CVE-2025-38089
四、漏洞 CVE-2025-38089 的评论
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