CVE-2026-70458 — rsync 3.0.0 < 3.5.0 Out-of-Bounds Write via FLAG_HLINKED Handling
rsync 3.0.0 before 3.5.0 contains an out-of-bounds write vulnerability that allows attackers to corrupt memory by triggering HLINK_BUMP processing on file entries with the FLAG_…
Published: 2026-08-13 · CVSS: 8.8 · CVSS 4.0
rsync 3.0.0 before 3.5.0 contains an out-of-bounds write vulnerability that allows attackers to corrupt memory by triggering HLINK_BUMP processing on file entries with the FLAG_HLINKED flag set while the hard-link preservation option is inactive. Attackers can exploit the missing F_SUM field in the file_struct layout to access memory past the end of the allocated structure, corrupting adjacent heap or stack data.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7