{"id":"UBUNTU-CVE-2023-45664","details":"stb_image is a single file MIT licensed library for processing images. A crafted image file can trigger `stbi__load_gif_main_outofmem` attempt to double-free the out variable. This happens in `stbi__load_gif_main` because when the `layers * stride` value is zero the behavior is implementation defined, but common that realloc frees the old memory and returns null pointer. Since it attempts to double-free the memory a few lines below the first “free”, the issue can be potentially exploited only in a multi-threaded environment. In the worst case this may lead to code execution.","modified":"2026-05-20T16:13:51.774690187Z","published":"2023-10-21T00:15:00Z","upstream":["CVE-2023-45664"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-45664"},{"type":"REPORT","url":"https://securitylab.github.com/advisories/GHSL-2023-145_GHSL-2023-151_stb_image_h/"},{"type":"REPORT","url":"https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L6993-L6995"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-45664"}],"affected":[{"package":{"name":"libstb","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libstb?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20190817.1.052dce1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libstb0","binary_version":"0.0~git20190817.1.052dce1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-45664.json"}},{"package":{"name":"libstb","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libstb?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20200713.b42009b+ds-1","0.0~git20210910.af1a5bc+ds-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libstb0","binary_version":"0.0~git20210910.af1a5bc+ds-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-45664.json"}},{"package":{"name":"libstb","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libstb?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20230129.5736b15+ds-1","0.0~git20230129.5736b15+ds-1.1","0.0~git20230129.5736b15+ds-1.2"],"ecosystem_specific":{"binaries":[{"binary_version":"0.0~git20230129.5736b15+ds-1.2","binary_name":"libstb0t64"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-45664.json"}},{"package":{"name":"libstb","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/libstb?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20240715.f7f20f39fe4f+ds-1","0.0~git20241109.5c20573+ds-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libstb0t64","binary_version":"0.0~git20241109.5c20573+ds-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-45664.json"}},{"package":{"name":"libstb","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/libstb?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20241109.5c20573+ds-1","0.0~git20250907.fede005+ds-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libstb0t64","binary_version":"0.0~git20250907.fede005+ds-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-45664.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}