CVE-2026-120454
The Sleuth Kit through 4.15.0 NULL Pointer Dereference via decmpfs LZVN Decompression
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| The Sleuth Kit The Sleuth Kit sleuthkit/sleuthkit
github |
≥ 0; ≤ 4.15.0 (affected, semver)
Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 6.8 medium |
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 5.5 medium |
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | CNA: VulnCheck |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/sleuthkit/sleuthkit/issues/3583CNA: VulnCheck · issue-tracking
- https://github.com/sleuthkit/sleuthkit/blob/sleuthkit-4.15.0/tsk/fs/decmpfs.c#L1154-L1169CNA: VulnCheck · technical-description
- https://github.com/sleuthkit/sleuthkit/releases/tag/sleuthkit-4.15.0CNA: VulnCheck · release-notes
- https://hackmd.io/@haindpwn/sleuthkit-hfs-decmpfs-attr-oob-readCNA: VulnCheck · technical-description
- https://www.vulncheck.com/advisories/the-sleuth-kit-through-4.15.0-null-pointer-dereference-via-decmpfs-lzvn-decompressionCNA: VulnCheck · third-party-advisory
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