Bug 2456789 (CVE-2026-40026)

Summary: CVE-2026-40026 sleuthkit: The Sleuth Kit: Information disclosure and denial of service via crafted ISO 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 The Sleuth Kit's ISO9660 filesystem parser. An attacker can craft a malicious ISO image that exploits an out-of-bounds read vulnerability in the `parse_susp()` function. This vulnerability occurs because the function trusts length fields from the disk image without proper validation, leading to reads beyond the intended data buffer. This can result in information disclosure and, in some cases, an infinite parsing loop, causing a denial of service.
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Bug Depends On: 2456878, 2456879    
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Description OSIDB Bzimport 2026-04-08 22:04:20 UTC 
The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.