{"id":"CVE-2017-9228","details":"An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A heap out-of-bounds write occurs in bitset_set_range() during regular expression compilation due to an uninitialized variable from an incorrect state transition. An incorrect state transition in parse_char_class() could create an execution path that leaves a critical local variable uninitialized until it's used as an index, resulting in an out-of-bounds write memory corruption.","modified":"2026-05-17T11:54:45.463875909Z","published":"2017-05-24T15:29:00.370Z","related":["SUSE-SU-2017:3237-1","SUSE-SU-2017:3277-1","SUSE-SU-2018:0003-1","SUSE-SU-2020:1570-1"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:1296"},{"type":"REPORT","url":"https://github.com/kkos/oniguruma/issues/60"},{"type":"FIX","url":"https://github.com/kkos/oniguruma/commit/3b63d12038c8d8fc278e81c942fa9bec7c704c8b"}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}