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// vulnerability record
cached · NVD via COSMOS syncCVE-2026-6685
MEDIUMpublished 2026-07-01 15:17 UTC · 3 days ago · modified 2026-07-02 14:38 UTC
6.1
CVSS / 10
// description
FatFs R0.16 and earlier exhibits a stale dirty-cache skip via unsigned-subtraction wrap in f_read() / f_write() (fp->sect - sect < cc) during interleaved read/write on fragmented filesystems. This maps to CWE-191 (Integer Underflow). Estimated CVSS v3.1 vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H (6.1, Medium). The estimated CISA SSVC vectors are Exploitation: PoC, Technical Impact: Total.
// weaknesses (CWE)
- CWE-191