Poppler before 25.04.0 allows crafted input files to trigger out-of-bounds reads in the JBIG2Bitmap::combine function in JBIG2Stream.cc because of a misplaced isOk check.
Exploitability
AV:LAC:LPR:NUI:NScope
S:UImpact
C:NI:NA:L4/CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LMemory Safety