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CVE-2025-38501— ksmbd: limit repeated connections from clients with the same IP

Quick assessment

Affected
Linux Linux
Exploitation
Public or AI PoC available; prioritize validation
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，该漏洞源于未限制来自同一IP的重复连接，可能导致耗尽最大连接数。

CVSS 7.5 · High EPSS 2.07% · P81

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 0626e6641f6b467447c81dd7678a69c66f7746cf< cb092fc3a62972a4aa47c9fe356c2c6a01cd840b affected
0626e6641f6b467447c81dd7678a69c66f7746cf< fa1c47af4ff641cf9197ecdb1f8240cbb30389c1 affected
0626e6641f6b467447c81dd7678a69c66f7746cf< 7e5d91d3e6c62a9755b36f29c35288f06c3cd86b affected
0626e6641f6b467447c81dd7678a69c66f7746cf< f1ce9258bcbce2491f9f71f7882b6eed0b33ec65 affected
0626e6641f6b467447c81dd7678a69c66f7746cf< 6073afe64510c302b7a0683a01e32c012eff715d affected
0626e6641f6b467447c81dd7678a69c66f7746cf< e6bb9193974059ddbb0ce7763fa3882bd60d4dc3 affected
5.15 affected
< 5.15 unaffected
… +6 more rows
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I. Basic Information for CVE-2025-38501

Vulnerability Information
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Vulnerability Title
ksmbd: limit repeated connections from clients with the same IP
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: limit repeated connections from clients with the same IP Repeated connections from clients with the same IP address may exhaust the max connections and prevent other normal client connections. This patch limit repeated connections from clients with the same IP.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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，该漏洞源于未限制来自同一IP的重复连接，可能导致耗尽最大连接数。
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 0626e6641f6b467447c81dd7678a69c66f7746cf ~ cb092fc3a62972a4aa47c9fe356c2c6a01cd840b -
Linux Linux 5.15 -

II. Public POCs for CVE-2025-38501

# POC Description Source Link Shenlong Link
1 CVE-2025-38501, KSMBDrain https://github.com/keymaker-arch/KSMBDrain POC Details
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III. Intelligence Information for CVE-2025-38501

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Same Patch Batch · Linux · 2025-08-16 · 59 CVEs total

CVE-2025-38527 9.8 CRITICAL smb: client: fix use-after-free in cifs_oplock_break
CVE-2025-38533 9.8 CRITICAL net: libwx: fix the using of Rx buffer DMA
CVE-2025-38552 9.4 CRITICAL mptcp: plug races between subflow fail and subflow creation
CVE-2023-3867 9.1 CRITICAL ksmbd: fix out of bounds read in smb2_sess_setup
CVE-2023-4515 9.1 CRITICAL ksmbd: validate command request size
CVE-2023-32249 9.1 CRITICAL ksmbd: not allow guest user on multichannel
CVE-2025-38511 8.8 HIGH drm/xe/pf: Clear all LMTT pages on alloc
CVE-2025-38512 8.8 HIGH wifi: prevent A-MSDU attacks in mesh networks
CVE-2023-4130 8.1 HIGH ksmbd: fix wrong next length validation of ea buffer in smb2_set_ea()
CVE-2023-3865 8.1 HIGH ksmbd: fix out-of-bound read in smb2_write
CVE-2025-38532 7.8 HIGH net: libwx: properly reset Rx ring descriptor
CVE-2025-38550 7.8 HIGH ipv6: mcast: Delay put pmc->idev in mld_del_delrec()
CVE-2025-38542 7.8 HIGH net: appletalk: Fix device refcount leak in atrtr_create()
CVE-2025-38539 7.8 HIGH tracing: Add down_write(trace_event_sem) when adding trace event
CVE-2025-38536 7.8 HIGH net: airoha: fix potential use-after-free in airoha_npu_get()
CVE-2025-38502 7.8 HIGH bpf: Fix oob access in cgroup local storage
CVE-2025-38524 7.5 HIGH rxrpc: Fix recv-recv race of completed call
CVE-2025-38526 7.5 HIGH ice: add NULL check in eswitch lag check
CVE-2025-38525 7.5 HIGH rxrpc: Fix irq-disabled in local_bh_enable()
CVE-2025-38514 7.5 HIGH rxrpc: Fix oops due to non-existence of prealloc backlog struct

Showing top 20 of 59 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38501

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