---
id: CVE-2026-107634
title: >-
  Dislocker through 0.7.3 contains a heap out-of-bounds read vulnerability in
  get_dataset() and get_next_datum() that never validate dataset and datum sizes
  against the metadata allocation
summary: >-
  Dislocker through 0.7.3 contains a heap out-of-bounds read vulnerability in
  get_dataset() and get_next_datum() that never validate dataset and datum sizes
  against the metadata allocation. Attackers can craft a BitLocker volume image
  with…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H'
cwe:
  - CWE-125
vendor: Aorimn
product: dislocker
affected:
  - dislocker <= 0.7.3
published: '2026-10-08'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T21:33:42.423'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-107634'
references:
  - url: 'https://github.com/Aorimn/dislocker'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/datums.c#L589-L640
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/metadata.c#L764-L790
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/Aorimn/dislocker/commit/9158e9e41dd669b360cbc53cc18ccae729b67b48
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/dislocker-through-0.7.3-heap-out-of-bounds-read-via-bitlocker-metadata-dataset-size
    label: disclosure@vulncheck.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-107634.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-107634'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-107634'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-10-08T14:47:16.359Z'
---

## Overview

Dislocker through 0.7.3 contains a heap out-of-bounds read vulnerability in get_dataset() and get_next_datum() that never validate dataset and datum sizes against the metadata allocation. Attackers can craft a BitLocker volume image with inflated dataset or datum sizes that, when opened or mounted, crashes dislocker or discloses adjacent heap memory.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · updated 2026-10-09 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-107634.json)