{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-08T15:26:32.466","vulnerabilities":[{"cve":{"id":"CVE-2025-71161","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2026-01-23T16:15:53.000","lastModified":"2026-03-25T11:16:14.790","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm-verity: disable recursive forward error correction\n\nThere are two problems with the recursive correction:\n\n1. It may cause denial-of-service. In fec_read_bufs, there is a loop that\nhas 253 iterations. For each iteration, we may call verity_hash_for_block\nrecursively. There is a limit of 4 nested recursions - that means that\nthere may be at most 253^4 (4 billion) iterations. Red Hat QE team\nactually created an image that pushes dm-verity to this limit - and this\nimage just makes the udev-worker process get stuck in the 'D' state.\n\n2. It doesn't work. In fec_read_bufs we store data into the variable\n\"fio->bufs\", but fio bufs is shared between recursive invocations, if\n\"verity_hash_for_block\" invoked correction recursively, it would\noverwrite partially filled fio->bufs."},{"lang":"es","value":"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndm-verity: deshabilitar la corrección de errores hacia adelante recursiva\n\nHay dos problemas con la corrección recursiva:\n\n1. Puede causar una denegación de servicio. En fec_read_bufs, hay un bucle que tiene 253 iteraciones. Para cada iteración, podemos llamar a verity_hash_for_block recursivamente. Hay un límite de 4 recursiones anidadas, lo que significa que puede haber como máximo 253^4 (4 mil millones) iteraciones. El equipo de QE de Red Hat creó una imagen que lleva a dm-verity a este límite, y esta imagen simplemente hace que el proceso udev-worker se quede atascado en el estado 'D'.\n\n2. No funciona. En fec_read_bufs almacenamos datos en la variable 'fio->bufs', pero fio bufs se comparte entre invocaciones recursivas; si 'verity_hash_for_block' invocara la corrección recursivamente, sobrescribiría los fio->bufs parcialmente llenos."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-193"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"6.18.6","matchCriteriaId":"09F12E1C-9D38-454F-8AC2-792EBBD94320"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/232948cf600fba69aff36b25d85ef91a73a35756","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/4220cb37406915c926c0e4a3dbab77cd9cceeb1e","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/897d9006e75f46f8bd7df78faa424327ae6a4bcf","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d9f3e47d3fae0c101d9094bc956ed24e7a0ee801","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/e227d2b229c7529bd98d348efc55262ccf24ab35","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}]}}]}