Riskcovery

CVE-2025-37947

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

State
Published
Severity
8.8 High
Published
May 20, 2025
Updated
Aug 5, 2026
Reserved
Apr 16, 2025

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.18.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCISA-ADP

Weaknesses

Affected Products

ProductVersions
LinuxLinux
  • 0626e6641f6b467447c81dd7678a69c66f7746cf to before 7f61da79df86fd140c7768e668ad846bfa7ec8e1Affected
  • 0626e6641f6b467447c81dd7678a69c66f7746cf to before 04c8a38c60346bb5a7c49b276de7233f703ce9cbAffected
  • 0626e6641f6b467447c81dd7678a69c66f7746cf to before d62ba16563a86aae052f96d270b3b6f78fca154cAffected
  • 0626e6641f6b467447c81dd7678a69c66f7746cf to before e6356499fd216ed6343ae0363f4c9303f02c5034Affected
  • 0626e6641f6b467447c81dd7678a69c66f7746cf to before 0ca6df4f40cf4c32487944aaf48319cb6c25acccAffected
LinuxLinux
  • 5.15Affected
  • before 5.15Not affected
  • 6.1.139 through 6.1.*Not affected
  • 6.6.91 through 6.6.*Not affected
  • 6.12.29 through 6.12.*Not affected
  • 6.14.7 through 6.14.*Not affected
  • 6.15 and laterNot affected

References

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