High severity8.8NVD Advisory· Published May 20, 2025· Updated Jul 30, 2026
CVE-2025-37947
CVE-2025-37947
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
10(expand)+ 7 more
- (no CPE)
- (no CPE)range: 5.15
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=5.15,<6.1.139
- cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
7- git.kernel.org/stable/c/04c8a38c60346bb5a7c49b276de7233f703ce9cbnvdPatch
- git.kernel.org/stable/c/0ca6df4f40cf4c32487944aaf48319cb6c25acccnvdPatch
- git.kernel.org/stable/c/7f61da79df86fd140c7768e668ad846bfa7ec8e1nvdPatch
- git.kernel.org/stable/c/d62ba16563a86aae052f96d270b3b6f78fca154cnvdPatch
- git.kernel.org/stable/c/e6356499fd216ed6343ae0363f4c9303f02c5034nvdPatch
- github.com/doyensec/KSMBD-CVE-2025-37947/blob/main/CVE-2025-37947.cnvdMailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2025/08/msg00010.htmlnvdMailing ListThird Party Advisory
News mentions
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