{"id":"CVE-2026-35372","sourceIdentifier":"security@ubuntu.com","published":"2026-04-22T17:16:41.850","lastModified":"2026-10-26T21:10:00.170","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"A logic error in the ln utility of uutils coreutils allows the utility to dereference a symbolic link target even when the --no-dereference (or -n) flag is explicitly provided. The implementation previously only honored the \"no-dereference\" intent if the --force (overwrite) mode was also enabled. This flaw causes ln to follow a symbolic link that points to a directory and create new links inside that target directory instead of treating the symbolic link itself as the destination. In environments where a privileged user or system script uses ln -n to update a symlink, a local attacker could manipulate existing symbolic links to redirect file creation into sensitive directories, potentially leading to unauthorized file creation or system misconfiguration."},{"lang":"es","value":"Un error de lógica en la utilidad ln de uutils coreutils permite a la utilidad desreferenciar un objetivo de enlace simbólico incluso cuando la bandera --no-dereference (o -n) se proporciona explícitamente. La implementación anteriormente solo respetaba la intención de ’no desreferenciar’ si el modo --force (sobrescribir) también estaba habilitado. Esta falla hace que ln siga un enlace simbólico que apunta a un directorio y cree nuevos enlaces dentro de ese directorio objetivo en lugar de tratar el propio enlace simbólico como el destino. En entornos donde un usuario privilegiado o un script del sistema utiliza ln -n para actualizar un enlace simbólico, un atacante local podría manipular enlaces simbólicos existentes para redirigir la creación de archivos hacia directorios sensibles, lo que podría llevar a la creación de archivos no autorizados o a una mala configuración del sistema."}],"affected":[{"source":"security@ubuntu.com","affectedData":[{"vendor":"Uutils","product":"coreutils","defaultStatus":"unaffected","collectionURL":"https://github.com/uutils","packageName":"coreutils","platforms":["Linux","Unix","macOS"],"repo":"https://github.com/uutils/coreutils","versions":[{"version":"0","lessThan":"0.8.0","versionType":"semver","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security@ubuntu.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N","baseScore":5.0,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":1.3,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-04-22T17:21:07.778700Z","id":"CVE-2026-35372","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security@ubuntu.com","type":"Secondary","description":[{"lang":"en","value":"CWE-61"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:uutils:coreutils:*:*:*:*:*:rust:*:*","versionEndExcluding":"0.8.0","matchCriteriaId":"2365DBBD-6F10-4651-8DA4-08AE79E14423"}]}]}],"references":[{"url":"https://github.com/uutils/coreutils/pull/11253","source":"security@ubuntu.com","tags":["Issue Tracking","Patch"]},{"url":"https://github.com/uutils/coreutils/releases/tag/0.8.0","source":"security@ubuntu.com","tags":["Release Notes"]}]}