CVE-2026-107635
Dislocker through 0.7.3 Out-of-Bounds Heap Read via VMK/FVEK Datum Size Underflow
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 8, 2026
- Updated
- Oct 16, 2026
- Reserved
- Oct 8, 2026
Description
Dislocker through 0.7.3 contains an integer underflow vulnerability in get_vmk() and get_fvek() that allows attackers to trigger out-of-bounds heap reads via crafted datum sizes. Attackers can supply a malicious BitLocker volume image with a datum_size smaller than the 36-byte AES-CCM header, causing hexdump() to over-read and crash dislocker.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.1 Medium | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H | VulnCheck |
Weaknesses
- CWE-191 Integer Underflow (Wrap or Wraparound)
Affected Products
| Product | Versions |
|---|---|
dislockerAorimn |
|
References
- Patch Commitpatch
- https://github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/vmk.c#L146-L180technical-description
- https://github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/fvek.c#L90-L105technical-description
- https://github.com/Aorimn/dislockerproduct
- VulnCheck Advisory: Dislocker through 0.7.3 Out-of-Bounds Heap Read via VMK/FVEK Datum Size Underflowthird-party-advisory
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