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.

References

• https://github.com/sleuthkit/sleuthkit/blob/sleuthkit-4.15.0/tsk/fs/decmpfs.c#L1154-L1169
• https://github.com/sleuthkit/sleuthkit/issues/3583
• https://github.com/sleuthkit/sleuthkit/releases/tag/sleuthkit-4.15.0
• https://hackmd.io/@haindpwn/sleuthkit-hfs-decmpfs-attr-oob-read
• https://www.vulncheck.com/advisories/the-sleuth-kit-through-4.15.0-null-pointer-dereference-via-decmpfs-lzvn-decompression