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.
CVSS 6.1EPSS 0%Risk 0.61
View source- Published
- 2026-07-01 15:17:12
- Affected versions
- cannotmatch
- Type
- Firmware
- Vector
- CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H