{"id":"DEBIAN-CVE-2026-122330","details":"Blosc c-blosc2 before 3.5.0 contains a divide-by-zero vulnerability in blosc2_schunk_get_slice_buffer() in blosc/schunk.c that allows attackers to crash applications by supplying crafted frames with unchecked zero chunksize or blocksize values. Attackers can provide a malicious Blosc2 frame opened via blosc2_schunk_open() or blosc2_schunk_from_buffer() and read as a slice, raising SIGFPE and terminating the process.","modified":"2026-11-07T22:00:06.904911890Z","published":"2026-11-05T16:17:46.197Z","upstream":["CVE-2026-122330"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-122330"}],"affected":[{"package":{"name":"c-blosc2","ecosystem":"Debian:13","purl":"pkg:deb/debian/c-blosc2?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.17.1+ds-1","2.17.1+ds-2","2.22.0+ds-1","2.22.0+ds-1~exp1","2.23.0+ds-1","2.23.0+ds-1~exp1","2.23.0+ds-1~exp2","2.23.1+ds-1","2.23.1+ds-2","3.1.5-1~exp1","3.2.3-1~exp1","3.3.5-1","3.3.5-1~exp1","3.4.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-122330.json"}},{"package":{"name":"c-blosc2","ecosystem":"Debian:14","purl":"pkg:deb/debian/c-blosc2?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.17.1+ds-1","2.17.1+ds-2","2.22.0+ds-1","2.22.0+ds-1~exp1","2.23.0+ds-1","2.23.0+ds-1~exp1","2.23.0+ds-1~exp2","2.23.1+ds-1","2.23.1+ds-2","3.1.5-1~exp1","3.2.3-1~exp1","3.3.5-1","3.3.5-1~exp1","3.4.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-122330.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}