{"id":"CVE-2026-112402","title":"Pillow: Double free in ImagingScaleAffine on calloc failure via Image.transform","summary":"Pillow is a Python imaging library. Prior to 13.0.0, Pillow can double free image memory when ImagingScaleAffine encounters a selective allocation failure. The affected fast path handles Transform.EXTENT or pure scale-and-translate Trans…","severity":"high","cvss":8.7,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","cvssSource":"cna","cwe":["CWE-416"],"vendor":"python-pillow","product":"Pillow","affected":["Pillow < 13.0.0"],"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-19T21:37:14.144311Z"},"exploitAvailable":true,"published":"2026-10-19","updated":"2026-10-19","sourceUpdated":"2026-10-19T21:37:35.120Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-112402","references":[{"url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-7mwm-ghpf-9vrm","label":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-7mwm-ghpf-9vrm"},{"url":"https://github.com/python-pillow/Pillow/commit/aafa6c75f7cdabb9f409a8aac7c780bea31d08d9","label":"https://github.com/python-pillow/Pillow/commit/aafa6c75f7cdabb9f409a8aac7c780bea31d08d9"},{"url":"https://github.com/python-pillow/Pillow/releases/tag/13.0.0","label":"https://github.com/python-pillow/Pillow/releases/tag/13.0.0"}],"tags":["cve.org","exploit-available"],"ingestedAt":"2026-10-19T21:43:56.110Z","slug":"CVE-2026-112402","body":"## Overview\n\nPillow is a Python imaging library. Prior to 13.0.0, Pillow can double free image memory when ImagingScaleAffine encounters a selective allocation failure. The affected fast path handles Transform.EXTENT or pure scale-and-translate Transform.AFFINE operations with the default NEAREST resampling. The output image allocation must succeed while the additional per-column lookup allocation fails, after which the error path deletes image storage that later cleanup releases again. An attacker who can drive such a large Image.transform() operation under memory pressure may trigger the failure. This can crash the process and may corrupt memory. This issue is fixed in version 13.0.0.\n\n## Affected\n\n- `Pillow < 13.0.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":60,"depthScoreParts":{"impact":47.8,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[]}