CVE-2026-34743 — XZ Utils: Buffer overflow in lzma_index_append()
XZ Utils provide a general-purpose data-compression library plus command-line tools. Prior to version 5.8.3, if lzma_index_decoder() was used to decode an Index that contained n…
Published: 2026-04-02 · CVSS: 1.7 · CVSS 4.0
XZ Utils provide a general-purpose data-compression library plus command-line tools. Prior to version 5.8.3, if lzma_index_decoder() was used to decode an Index that contained no Records, the resulting lzma_index was left in a state where where a subsequent lzma_index_append() would allocate too little memory, and a buffer overflow would occur. This issue has been patched in version 5.8.3.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7