llama.cpp b8841 版本發現 RDMA 造成堆疊溢位漏洞 CVE-2026-118375
CVE-2026-118375 - llama.cpp b8841 before b11865 Stack-based Buffer Overflow via ggml-rpc RDMA rdma_recv()
llama.cpp 在 b8841 版本中發現一個可被未授權對等方利用的堆疊溢位漏洞，稱為 CVE-2026-118375。
- 漏洞細節：透過 ggml-rpc RDMA 介面，攻擊者可在 HELLO 訊息中宣告 RDMA 能力，並將高達 256 KiB 資料寫入 1 位元組堆疊變數，導致伺服器崩潰或可能執行惡意程式。
此漏洞允許未授權對等方透過 RDMA 造成伺服器崩潰或執行惡意程式，建議立即升級至 b11865 或移除 RDMA 支援，並確認更新已正確套用。
llama.cpp b8841 before b11865 contains an out-of-bounds write vulnerability in the ggml-rpc RDMA transport rdma_recv() function that allows unauthenticated peers to overflow the rpc-server stack. Attackers advertising RDMA capabilities in the HELLO message can send up to 256 KiB into a 1-byte stack variable in rpc_serve_client(), crashing the server or potentially executing code.
Impact
Affected Products
The following products are affected by CVE-2026-118375
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
| ID | Vendor | Product | Action |
|---|---|---|---|
| 1 | Ggml | llama.cpp | |
| 1 | Ggml-org | llama.cpp |
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | CRITICAL | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Update llama.cpp to version b11865 or later to fix an out-of-bounds write vulnerability.
- Update llama.cpp to a fixed version.
- Verify the update is applied.
- Remove unsupported RDMA capabilities.
Here, you will find a curated list of external links that provide in-depth
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CVE-2026-118375.
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-118375 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification
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approaches employed by adversaries to exploit the CVE-2026-118375
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-118375 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-118375 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
十月. 28, 2026
Action Type Old Value New Value Added Description llama.cpp b8841 before b11865 contains an out-of-bounds write vulnerability in the ggml-rpc RDMA transport rdma_recv() function that allows unauthenticated peers to overflow the rpc-server stack. Attackers advertising RDMA capabilities in the HELLO message can send up to 256 KiB into a 1-byte stack variable in rpc_serve_client(), crashing the server or potentially executing code. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-787 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/118xxx/CVE-2026-118375.json">CVE-2026-118375</a> Added Reference https://github.com/ggml-org/llama.cpp Added Reference https://github.com/ggml-org/llama.cpp/blob/620d2225cc436ab0b001e3200e590e3b286ef9ab/ggml/src/ggml-rpc/transport.cpp#L510-L528 Added Reference https://github.com/ggml-org/llama.cpp/commit/9a0fde9967fa1a35b6e5dd1f47e1a3648b6fecc1 Added Reference https://github.com/ggml-org/llama.cpp/pull/30399 Added Reference https://github.com/ggml-org/llama.cpp/releases/tag/b11865 Added Reference https://www.vulncheck.com/advisories/llama-cpp-b8841-before-b11865-stack-based-buffer-overflow-via-ggml-rpc-rdma-rdma-recv
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.