{"id":"UBUNTU-CVE-2026-4367","details":"A flaw was found in libXpm. A local user with low privileges could exploit an Out-of-Bounds Read vulnerability in the `xpmNextWord()` function by processing a specially crafted or very small XPM (X PixMap) image file. This improper validation of file boundaries can cause an internal pointer to read beyond the file's end, leading to application crashes and Denial of Service conditions.","modified":"2026-07-23T20:39:06.623283051Z","published":"2026-04-21T13:00:00Z","related":["USN-8600-1"],"upstream":["CVE-2026-4367"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-4367"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-4367"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8600-1"}],"affected":[{"package":{"name":"libxpm","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/libxpm?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:3.5.10-1","1:3.5.10-1ubuntu0.1","1:3.5.10-1ubuntu0.1+esm1","1:3.5.10-1ubuntu0.1+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"libxpm4","binary_version":"1:3.5.10-1ubuntu0.1+esm2"},{"binary_version":"1:3.5.10-1ubuntu0.1+esm2","binary_name":"xpmutils"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4367.json"}},{"package":{"name":"motif","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/motif?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.4-4","2.3.4-5","2.3.4-5ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libmotif-common","binary_version":"2.3.4-5ubuntu0.1"},{"binary_name":"libmotif3","binary_version":"2.3.4-5ubuntu0.1"},{"binary_version":"2.3.4-5ubuntu0.1","binary_name":"libmotif4"},{"binary_name":"libmrm4","binary_version":"2.3.4-5ubuntu0.1"},{"binary_version":"2.3.4-5ubuntu0.1","binary_name":"libuil4"},{"binary_name":"libxm4","binary_version":"2.3.4-5ubuntu0.1"},{"binary_name":"motif-clients","binary_version":"2.3.4-5ubuntu0.1"},{"binary_name":"mwm","binary_version":"2.3.4-5ubuntu0.1"},{"binary_version":"2.3.4-5ubuntu0.1","binary_name":"uil"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4367.json"}},{"package":{"name":"libxpm","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libxpm?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:3.5.11-1","1:3.5.11-1ubuntu0.16.04.1","1:3.5.11-1ubuntu0.16.04.1+esm1","1:3.5.11-1ubuntu0.16.04.1+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"libxpm4","binary_version":"1:3.5.11-1ubuntu0.16.04.1+esm2"},{"binary_version":"1:3.5.11-1ubuntu0.16.04.1+esm2","binary_name":"xpmutils"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4367.json"}},{"package":{"name":"motif","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/motif?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.4-8ubuntu1","2.3.4-9","2.3.4-10"],"ecosystem_specific":{"binaries":[{"binary_version":"2.3.4-10","binary_name":"libmotif-common"},{"binary_name":"libmrm4","binary_version":"2.3.4-10"},{"binary_name":"libuil4","binary_version":"2.3.4-10"},{"binary_name":"libxm4","binary_version":"2.3.4-10"},{"binary_name":"mwm","binary_version":"2.3.4-10"},{"binary_version":"2.3.4-10","binary_name":"uil"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4367.json"}},{"package":{"name":"libxpm","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libxpm?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:3.5.12-1","1:3.5.12-1ubuntu0.18.04.2","1:3.5.12-1ubuntu0.18.04.2+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"1:3.5.12-1ubuntu0.18.04.2+esm1","binary_name":"libxpm4"},{"binary_name":"xpmutils","binary_version":"1:3.5.12-1ubuntu0.18.04.2+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4367.json"}},{"package":{"name":"motif","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/motif?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.7-2","2.3.8-1","2.3.8-2","2.3.8-2build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libmotif-common","binary_version":"2.3.8-2build1"},{"binary_name":"libmrm4","binary_version":"2.3.8-2build1"},{"binary_name":"libuil4","binary_version":"2.3.8-2build1"},{"binary_version":"2.3.8-2build1","binary_name":"libxm4"},{"binary_name":"mwm","binary_version":"2.3.8-2build1"},{"binary_name":"uil","binary_version":"2.3.8-2build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4367.json"}},{"package":{"name":"libxpm","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libxpm?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:3.5.12-1","1:3.5.12-1ubuntu0.20.04.1","1:3.5.12-1ubuntu0.20.04.2"],"ecosystem_specific":{"binaries":[{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