CVE-2026-116742 (GCVE-0-2026-116742)
Vulnerability from cvelistv5
Published
2026-10-26 21:52
Modified
2026-10-27 14:16
Severity ?
4.8 (Medium) - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
4.4 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
CWE
  • CWE-197 - Numeric Truncation Error
Summary
HTSlib through 1.24 contains a heap out-of-bounds write and read vulnerability in bgzf_index_load_hfile() in bgzf.c that allows attackers to corrupt heap memory by supplying a crafted .gzi index entry count. A count of 0xFFFFFFFF truncates noffs to zero, causing writes past a malloc(0) buffer and an offs[-1] read in bgzf_useek(), resulting in heap corruption or crashes in tools like samtools and bcftools.
References
Impacted products
Vendor Product Version
samtools htslib Version: 0   <
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