CVEvulnerability
CVE-2026-107635
6.9 MEDIUM
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-10-08
- Last modified
- 2026-10-16
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 6.1 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
- Weaknesses
- CWE-191
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.
Related
Weakness · CWE (1)
- CWE-191 Integer Underflow (Wrap or Wraparound) weakness
References
- https://github.com/Aorimn/dislocker github.com
- https://github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/fvek.c#L90-L105 github.com
- https://github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/vmk.c#L146-L180 github.com
- https://github.com/Aorimn/dislocker/commit/0706462db88efe8df88150e4c3e4332b808f4581 github.com
- https://www.vulncheck.com/advisories/dislocker-through-0.7.3-out-of-bounds-heap-read-via-vmk-fvek-datum-size-underflow www.vulncheck.com