{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-18T09:29:38.212","vulnerabilities":[{"cve":{"id":"CVE-2021-47541","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-05-24T15:15:18.330","lastModified":"2024-11-21T06:36:29.980","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx4_en: Fix an use-after-free bug in mlx4_en_try_alloc_resources()\n\nIn mlx4_en_try_alloc_resources(), mlx4_en_copy_priv() is called and\ntmp->tx_cq will be freed on the error path of mlx4_en_copy_priv().\nAfter that mlx4_en_alloc_resources() is called and there is a dereference\nof &tmp->tx_cq[t][i] in mlx4_en_alloc_resources(), which could lead to\na use after free problem on failure of mlx4_en_copy_priv().\n\nFix this bug by adding a check of mlx4_en_copy_priv()\n\nThis bug was found by a static analyzer. The analysis employs\ndifferential checking to identify inconsistent security operations\n(e.g., checks or kfrees) between two code paths and confirms that the\ninconsistent operations are not recovered in the current function or\nthe callers, so they constitute bugs.\n\nNote that, as a bug found by static analysis, it can be a false\npositive or hard to trigger. Multiple researchers have cross-reviewed\nthe bug.\n\nBuilds with CONFIG_MLX4_EN=m show no new warnings,\nand our static analyzer no longer warns about this code."},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/mlx4_en: corrige un error de use-after-free en mlx4_en_try_alloc_resources() En mlx4_en_try_alloc_resources(), se llama a mlx4_en_copy_priv() y se liberará tmp->tx_cq en la ruta del error de mlx4_en_copy_priv(). Después de eso, se llama a mlx4_en_alloc_resources() y hay una desreferencia de &tmp->tx_cq[t][i] en mlx4_en_alloc_resources(), lo que podría llevar a un problema de use-after-free si falla mlx4_en_copy_priv(). Corrija este error agregando una verificación de mlx4_en_copy_priv() Este error fue encontrado por un analizador estático. El análisis emplea verificación diferencial para identificar operaciones de seguridad inconsistentes (por ejemplo, comprobaciones o kfrees) entre dos rutas de código y confirma que las operaciones inconsistentes no se recuperan en la función actual o en las personas que llaman, por lo que constituyen errores. Tenga en cuenta que, como error encontrado mediante análisis estático, puede ser un falso positivo o difícil de activar. Varios investigadores han realizado una revisión cruzada del error. Las compilaciones con CONFIG_MLX4_EN=m no muestran nuevas advertencias y nuestro analizador estático ya no advierte sobre este código."}],"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:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-416"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"4.14.257","matchCriteriaId":"7AF49EC4-841A-445B-BA46-0256B0EFB84C"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"4.19.220","matchCriteriaId":"FFE5D9F3-CF1C-4DE8-9116-2EBE7BDEF7FD"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.4.164","matchCriteriaId":"D2D8DC10-1823-4334-BD0F-C1B620602FF9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.84","matchCriteriaId":"AE5B4333-2C46-40C3-8B42-0168AD91DDE1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.7","matchCriteriaId":"A696A60B-2782-4119-83DD-1EFFBC903F02"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/676dc7d9b15bf8733233a2db1ec3f9091ab34275","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/75917372eef0dbfb290ae45474314d35f97aea18","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/addad7643142f500080417dd7272f49b7a185570","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/be12572c5ddc8ad7453bada4eec8fa46967dc757","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/e461a9816a1ac5b4aeb61621b817225b61e46a68","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/f1d43efa59f1edd3e7eca0e94559b4c6b1cd4e2b","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/676dc7d9b15bf8733233a2db1ec3f9091ab34275","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/75917372eef0dbfb290ae45474314d35f97aea18","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/addad7643142f500080417dd7272f49b7a185570","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/be12572c5ddc8ad7453bada4eec8fa46967dc757","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/e461a9816a1ac5b4aeb61621b817225b61e46a68","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/f1d43efa59f1edd3e7eca0e94559b4c6b1cd4e2b","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]}]}}]}