7.8

CVE-2025-37947

ksmbd: prevent out-of-bounds stream writes by validating *pos

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: prevent out-of-bounds stream writes by validating *pos

ksmbd_vfs_stream_write() did not validate whether the write offset
(*pos) was within the bounds of the existing stream data length (v_len).
If *pos was greater than or equal to v_len, this could lead to an
out-of-bounds memory write.

This patch adds a check to ensure *pos is less than v_len before
proceeding. If the condition fails, -EINVAL is returned.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.15 < 6.1.139
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.91
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.29
Linux ≫ Linux Kernel Version >= 6.13 < 6.14.7
Linux ≫ Linux Kernel Version6.15 Updaterc1
Linux ≫ Linux Kernel Version6.15 Updaterc2
Linux ≫ Linux Kernel Version6.15 Updaterc3
Linux ≫ Linux Kernel Version6.15 Updaterc4
Linux ≫ Linux Kernel Version6.15 Updaterc5
Debian ≫ Debian Linux Version11.0
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.2% 0.103
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
134c704f-9b21-4f2e-91b3-4a467353bcc0 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://git.kernel.org/stable/c/04c8a38c60346bb5a7c49b276de7233f703ce9cb
Patch
https://git.kernel.org/stable/c/0ca6df4f40cf4c32487944aaf48319cb6c25accc
Patch
https://git.kernel.org/stable/c/7f61da79df86fd140c7768e668ad846bfa7ec8e1
Patch
https://git.kernel.org/stable/c/d62ba16563a86aae052f96d270b3b6f78fca154c
Patch
https://git.kernel.org/stable/c/e6356499fd216ed6343ae0363f4c9303f02c5034
Patch
https://github.com/doyensec/KSMBD-CVE-2025-37947/blob/main/CVE-2025-37947.c
Third Party Advisory
Mailing List
https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html
Third Party Advisory
Mailing List