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CVE-2025-40080— nbd: restrict sockets to TCP and UDP

Quick assessment

Affected
Linux Linux
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.

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，该漏洞源于未限制NBD仅使用TCP和UNIX流套接字，可能导致滥用攻击。

AI Predicted 5.3 Difficulty: Hard EPSS 0.21% · P10

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux cf1b2326b734896734c6e167e41766f9cee7686a< c365e8f20f4201d873a70385bd919f0fb531e960 affected
cf1b2326b734896734c6e167e41766f9cee7686a< 4f9e6ff6319dbcebea64b50af0304cf0ad7e97e7 affected
cf1b2326b734896734c6e167e41766f9cee7686a< 37ad11f20e164c23ce827dd455b42c0fdd29685c affected
cf1b2326b734896734c6e167e41766f9cee7686a< 808e2335bc1cf2293b9e36ccc94c267c81509c71 affected
cf1b2326b734896734c6e167e41766f9cee7686a< 9f7c02e031570e8291a63162c6c046dc15ff85b0 affected
4df728651b8a99693c69962d8e5a5b9e5a3bbcc7 affected
083322455c67d278c56a66b73f1221f004ee600a affected
4fa1cbd587ef967812f9d9f6ce46ec1dead7502c affected
… +10 more rows
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I. Basic Information for CVE-2025-40080

Vulnerability Information
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Vulnerability Title
nbd: restrict sockets to TCP and UDP
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nbd: restrict sockets to TCP and UDP Recently, syzbot started to abuse NBD with all kinds of sockets. Commit cf1b2326b734 ("nbd: verify socket is supported during setup") made sure the socket supported a shutdown() method. Explicitely accept TCP and UNIX stream sockets.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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，该漏洞源于未限制NBD仅使用TCP和UNIX流套接字，可能导致滥用攻击。
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
Linux Linux cf1b2326b734896734c6e167e41766f9cee7686a ~ c365e8f20f4201d873a70385bd919f0fb531e960 -
Linux Linux 5.4 -

II. Public POCs for CVE-2025-40080

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III. Intelligence Information for CVE-2025-40080

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Same Patch Batch · Linux · 2025-10-28 · 58 CVEs total

CVE-2025-40074 9.8 CRITICAL ipv4: start using dst_dev_rcu()
CVE-2025-40043 8.8 HIGH net: nfc: nci: Add parameter validation for packet data
CVE-2025-40039 8.8 HIGH ksmbd: Fix race condition in RPC handle list access
CVE-2025-40058 8.8 HIGH iommu/vt-d: Disallow dirty tracking if incoherent page walk
CVE-2025-40046 8.6 HIGH io_uring/zcrx: fix overshooting recv limit
CVE-2025-40068 8.4 HIGH fs: ntfs3: Fix integer overflow in run_unpack()
CVE-2025-40075 8.1 HIGH tcp_metrics: use dst_dev_net_rcu()
CVE-2025-40026 7.9 HIGH KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O
CVE-2025-40027 7.8 HIGH net/9p: fix double req put in p9_fd_cancelled
CVE-2025-40051 7.8 HIGH vhost: vringh: Modify the return value check
CVE-2025-40061 7.8 HIGH RDMA/rxe: Fix race in do_task() when draining
CVE-2025-40081 7.8 HIGH perf: arm_spe: Prevent overflow in PERF_IDX2OFF()
CVE-2025-40079 7.8 HIGH riscv, bpf: Sign extend struct ops return values properly
CVE-2025-40028 7.8 HIGH binder: fix double-free in dbitmap
CVE-2025-40041 7.8 HIGH LoongArch: BPF: Sign-extend struct ops return values properly
CVE-2025-40054 7.8 HIGH f2fs: fix UAF issue in f2fs_merge_page_bio()
CVE-2025-40044 7.8 HIGH fs: udf: fix OOB read in lengthAllocDescs handling
CVE-2025-40045 7.8 HIGH ASoC: codecs: wcd937x: set the comp soundwire port correctly
CVE-2025-40025 7.8 HIGH f2fs: fix to do sanity check on node footer for non inode dnode
CVE-2025-40047 7.8 HIGH io_uring/waitid: always prune wait queue entry in io_waitid_wait()

Showing top 20 of 58 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-40080

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