{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-19T14:05:06.577","vulnerabilities":[{"cve":{"id":"CVE-2021-47276","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-05-21T15:15:15.983","lastModified":"2025-04-30T14:46:07.833","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nftrace: Do not blindly read the ip address in ftrace_bug()\n\nIt was reported that a bug on arm64 caused a bad ip address to be used for\nupdating into a nop in ftrace_init(), but the error path (rightfully)\nreturned -EINVAL and not -EFAULT, as the bug caused more than one error to\noccur. But because -EINVAL was returned, the ftrace_bug() tried to report\nwhat was at the location of the ip address, and read it directly. This\ncaused the machine to panic, as the ip was not pointing to a valid memory\naddress.\n\nInstead, read the ip address with copy_from_kernel_nofault() to safely\naccess the memory, and if it faults, report that the address faulted,\notherwise report what was in that location."},{"lang":"es","value":" En el kernel de Linux, se resolvió la siguiente vulnerabilidad: ftrace: no lea ciegamente la dirección IP en ftrace_bug(). Se informó que un error en arm64 provocó que se usara una dirección IP incorrecta para actualizar a un nop en ftrace_init() , pero la ruta de error (con razón) devolvió -EINVAL y no -EFAULT, ya que el error provocó que ocurriera más de un error. Pero debido a que se devolvió -EINVAL, ftrace_bug() intentó informar qué había en la ubicación de la dirección IP y leerlo directamente. Esto provocó que la máquina entrara en pánico, ya que la IP no apuntaba a una dirección de memoria válida. En su lugar, lea la dirección IP con copy_from_kernel_nofault() para acceder de forma segura a la memoria y, si falla, informe que la dirección falló; de lo contrario, informe qué había en esa ubicación."}],"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-706"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.28","versionEndExcluding":"4.4.273","matchCriteriaId":"224F5847-99C4-401E-A5D6-712A45CC534F"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"4.9.273","matchCriteriaId":"484D222B-5082-4E28-BF0F-B52766353015"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"4.14.237","matchCriteriaId":"83CDDAD5-5539-46C9-9255-C1DAC38F7905"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"4.19.195","matchCriteriaId":"23EECCE9-4D4C-4684-AB00-10C938F5DDC1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.4.126","matchCriteriaId":"876275F9-BEC7-40E8-9D7F-A20729A4A4FF"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.44","matchCriteriaId":"DA547B08-9D25-467B-AD0D-8460FE4EE70D"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.12.11","matchCriteriaId":"F914A757-FAFD-407E-9031-21F66635D5EA"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*","matchCriteriaId":"0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*","matchCriteriaId":"96AC23B2-D46A-49D9-8203-8E1BEDCA8532"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*","matchCriteriaId":"DA610E30-717C-4700-9F77-A3C9244F3BFD"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*","matchCriteriaId":"1ECD33F5-85BE-430B-8F86-8D7BD560311D"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:*","matchCriteriaId":"CF351855-2437-4CF5-AD7C-BDFA51F27683"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0bc62e398bbd9e600959e610def5109957437b28","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/3e4ddeb68751fb4fb657199aed9cfd5d02796875","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/4aedc2bc2b32c93555f47c95610efb89cc1ec09b","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6c14133d2d3f768e0a35128faac8aa6ed4815051","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/7e4e824b109f1d41ccf223fbb0565d877d6223a2","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/862dcc14f2803c556bdd73b43c27b023fafce2fb","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/97524384762c1fb9b3ded931498dd2047bd0de81","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/acf671ba79c1feccc3ec7cfdcffead4efcec49e7","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/0bc62e398bbd9e600959e610def5109957437b28","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/3e4ddeb68751fb4fb657199aed9cfd5d02796875","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/4aedc2bc2b32c93555f47c95610efb89cc1ec09b","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6c14133d2d3f768e0a35128faac8aa6ed4815051","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/7e4e824b109f1d41ccf223fbb0565d877d6223a2","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/862dcc14f2803c556bdd73b43c27b023fafce2fb","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/97524384762c1fb9b3ded931498dd2047bd0de81","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.or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