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CVE-2025-39943— ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer

EPSS 0.02% · P4

Affected Version Matrix 14

VendorProductVersion RangeStatus
LinuxLinux2ea086e35c3d726a3bacd0a971c1f02a50e98206< 773fddf976d282ef059c36c575ddb81567acd6bcaffected
2ea086e35c3d726a3bacd0a971c1f02a50e98206< bdaab5c6538e250a9654127e688ecbbeb6f771d5affected
2ea086e35c3d726a3bacd0a971c1f02a50e98206< eb0378dde086363046ed3d7db7f126fc3f76fd70affected
2ea086e35c3d726a3bacd0a971c1f02a50e98206< 8be498fcbd5b07272f560b45981d4b9e5a2ad885affected
2ea086e35c3d726a3bacd0a971c1f02a50e98206< 529b121b00a6ee3c88fb3c01b443b2b81f686d48affected
2ea086e35c3d726a3bacd0a971c1f02a50e98206< 5282491fc49d5614ac6ddcd012e5743eecb6a67caffected
5.15affected
< 5.15unaffected
… +6 more rows
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I. Basic Information for CVE-2025-39943

Vulnerability Information
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Vulnerability Title
ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer If data_offset and data_length of smb_direct_data_transfer struct are invalid, out of bounds issue could happen. This patch validate data_offset and data_length field in recv_done.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
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，该漏洞源于未验证smb_direct_data_transfer结构体的data_offset和data_length字段，可能导致越界问题。
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 2ea086e35c3d726a3bacd0a971c1f02a50e98206 ~ 773fddf976d282ef059c36c575ddb81567acd6bc -
LinuxLinux 5.15 -

II. Public POCs for CVE-2025-39943

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III. Intelligence Information for CVE-2025-39943

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Same Patch Batch · Linux · 2025-10-04 · 144 CVEs total

CVE-2025-399469.8 CRITICALtls: make sure to abort the stream if headers are bogus
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CVE-2023-53580USB: Gadget: core: Help prevent panic during UVC unconfigure
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CVE-2022-50508wifi: mt76: mt76x0: fix oob access in mt76x0_phy_get_target_power
CVE-2022-50506drbd: only clone bio if we have a backing device
CVE-2022-50504powerpc/rtas: avoid scheduling in rtas_os_term()
CVE-2022-50505iommu/amd: Fix pci device refcount leak in ppr_notifier()
CVE-2022-50503mtd: lpddr2_nvm: Fix possible null-ptr-deref
CVE-2022-50501media: coda: Add check for dcoda_iram_alloc
CVE-2022-50500netdevsim: fix memory leak in nsim_drv_probe() when nsim_dev_resources_register() failed
CVE-2022-50499media: dvb-core: Fix double free in dvb_register_device()
CVE-2022-50497binfmt_misc: fix shift-out-of-bounds in check_special_flags
CVE-2022-50498eth: alx: take rtnl_lock on resume
CVE-2022-50496dm cache: Fix UAF in destroy()
CVE-2022-50494thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash
CVE-2022-50493scsi: qla2xxx: Fix crash when I/O abort times out
CVE-2022-50492drm/msm: fix use-after-free on probe deferral
CVE-2023-53572clk: imx: scu: use _safe list iterator to avoid a use after free

Showing top 20 of 144 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39943

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