Medium severity5.5NVD Advisory· Published Nov 2, 2026
CVE-2026-120454
CVE-2026-120454
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.
Affected products
1- Range: <=4.15.0
Patches
Vulnerability mechanics
References
5- github.com/sleuthkit/sleuthkit/blob/sleuthkit-4.15.0/tsk/fs/decmpfs.cnvd
- github.com/sleuthkit/sleuthkit/issues/3583nvd
- github.com/sleuthkit/sleuthkit/releases/tag/sleuthkit-4.15.0nvd
- hackmd.io/@haindpwn/sleuthkit-hfs-decmpfs-attr-oob-readnvd
- www.vulncheck.com/advisories/the-sleuth-kit-through-4.15.0-null-pointer-dereference-via-decmpfs-lzvn-decompressionnvd
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