High 7.5Published Oct 4, 2025

CVE-2025-39942ksmbd: smbdirect: verify remaining_data_length respects max_fragmented_recv_size

Updated under an hour ago (Oct 28, 2026, 5:23 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: verify remaining_data_length respects max_fragmented_recv_size This is inspired by the check for data_offset + data_length.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 19, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 2ea086e35c3d726a3bacd0a971c1f02a50e98206 before 196a3a7676d726ee67621ea2bf3b7815ac2685b4; from 2ea086e35c3d726a3bacd0a971c1f02a50e98206 before d3cb3f209d35c44b7ee74f77ed27ebb28995b9ce; from 2ea086e35c3d726a3bacd0a971c1f02a50e98206 before 9644798294c7287e65a7b26e35aa6d2ce3345bcc; from 2ea086e35c3d726a3bacd0a971c1f02a50e98206 before c64b915bb3d9339adcae5db4be2c35ffbef5e615; from 2ea086e35c3d726a3bacd0a971c1f02a50e98206 before e1868ba37fd27c6a68e31565402b154beaa65df0	CNA record
linux linux_kernel linux:linux_kernel	from 5.15.1 before 6.1.154; from 6.2 before 6.6.108; from 6.7 before 6.12.49; from 6.13 before 6.16.9; 5.15; 5.15; 6.17; 6.17; and 4 more ranges	NVD

References

References

https://git.kernel.org/stable/c/196a3a7676d726ee67621ea2bf3b7815ac2685b4	patch
https://git.kernel.org/stable/c/d3cb3f209d35c44b7ee74f77ed27ebb28995b9ce	patch
https://git.kernel.org/stable/c/9644798294c7287e65a7b26e35aa6d2ce3345bcc	patch
https://git.kernel.org/stable/c/c64b915bb3d9339adcae5db4be2c35ffbef5e615	patch
https://git.kernel.org/stable/c/e1868ba37fd27c6a68e31565402b154beaa65df0	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.