Bug 2567943 (CVE-2026-120454)

Summary: CVE-2026-120454 sleuthkit: sleuthkit: Denial of Service via crafted HFS+ image
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in sleuthkit. An attacker can cause a Denial of Service (DoS) by providing a specially crafted HFS+ filesystem image with an excessively large uncompressed attribute size. When sleuthkit attempts to decompress the data, a memory allocation failure triggers a null pointer dereference, causing the application to crash.
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Description OSIDB Bzimport 2026-11-05 22:38:18 UTC 
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.