ImageMagick before 7.1.2-26 and 6.9.13-51 is missing a check for the allowed memory allocation limit in matrix-backed operations such as -canny. An attacker can supply a crafted image that causes ImageMagick to allocate more memory than permitted by the configured policy, resulting in a denial of service.
8:6.8.9.9-7ubuntu5.16+esm248:6.9.7.4+dfsg-16ubuntu6.15+esm168:6.9.10.23+dfsg-2.1ubuntu11.11+esm148:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm148:6.9.12.98+dfsg1-5.2ubuntu0.1~esm138:7.1.2.18+dfsg1-1ubuntu0.1~esm2Exploitability
AV:LAC:LAT:NPR:NUI:PVulnerable System
VC:NVI:NVA:LSubsequent System
SC:NSI:NSA:NCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N