UBUNTU-CVE-2026-120454

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    UBUNTU-CVE-2026-120454

    Published: 2 Nov 2026Last Modified: 5 Nov 2026
    Upstream:
    CVE-2026-120454

    Summary:

    Details: The Sleuth Kit through 4.15.0 contains a NULL pointer dereference vulnerability in decmpfs_decompress_lzvn_attr() that allows attackers to crash the tool by supplying a crafted HFS+ image. Attackers can set a huge uncompressed_size in an LZVN inline com.apple.decmpfs attribute so allocation fails and the decoder writes through NULL, causing denial of service.

    References: https://ubuntu.com/security/CVE-2026-120454, https://www.cve.org/CVERecord?id=CVE-2026-120454, https://github.com/sleuthkit/sleuthkit/blob/sleuthkit-4.15.0/tsk/fs/decmpfs.c#L1154-L1169, https://github.com/sleuthkit/sleuthkit/issues/3583, https://github.com/sleuthkit/sleuthkit/releases/tag/sleuthkit-4.15.0, https://hackmd.io/@haindpwn/sleuthkit-hfs-decmpfs-attr-oob-read, https://www.vulncheck.com/advisories/the-sleuth-kit-through-4.15.0-null-pointer-dereference-via-decmpfs-lzvn-decompression

    Affected packages

    Package

    Name: sleuthkit

    Purl: pkg:deb/ubuntu/sleuthkit?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    3.2.3-2ubuntu1
    3.2.3-2ubuntu2
    3.2.3-2.1
    3.2.3-2.2
    3.2.3-2.2ubuntu0.1~esm1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2026-120454 | CVE-DB