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CVE-2026-120454 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://hackmd.io/@haindpwn/cve-2026-120453-120454-sleuthkit-hfs-decmpfs-attr-oob-read	CISA-ADP
https://github.com/sleuthkit/sleuthkit/blob/sleuthkit-4.15.0/tsk/fs/decmpfs.c#L1154-L1169	[email protected]
https://github.com/sleuthkit/sleuthkit/issues/3583	[email protected]
https://github.com/sleuthkit/sleuthkit/releases/tag/sleuthkit-4.15.0	[email protected]
https://hackmd.io/@haindpwn/sleuthkit-hfs-decmpfs-attr-oob-read	[email protected]
https://www.vulncheck.com/advisories/the-sleuth-kit-through-4.15.0-null-pointer-dereference-via-decmpfs-lzvn-decompression	[email protected]

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-476	NULL Pointer Dereference	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Nov 5, 2026	CVE Modified	CISA-ADP
Nov 2, 2026	New CVE Received	[email protected]