{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-04T17:01:01.907","vulnerabilities":[{"cve":{"id":"CVE-2021-47542","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-05-24T15:15:18.550","lastModified":"2024-11-21T06:36:30.193","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qlogic: qlcnic: Fix a NULL pointer dereference in qlcnic_83xx_add_rings()\n\nIn qlcnic_83xx_add_rings(), the indirect function of\nahw->hw_ops->alloc_mbx_args will be called to allocate memory for\ncmd.req.arg, and there is a dereference of it in qlcnic_83xx_add_rings(),\nwhich could lead to a NULL pointer dereference on failure of the\nindirect function like qlcnic_83xx_alloc_mbx_args().\n\nFix this bug by adding a check of alloc_mbx_args(), this patch\nimitates the logic of mbx_cmd()'s failure handling.\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_QLCNIC=m show no new warnings, and our\nstatic analyzer no longer warns about this code."},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: qlogic: qlcnic: corrigió una desreferencia de puntero NULL en qlcnic_83xx_add_rings() En qlcnic_83xx_add_rings(), se llamará a la función indirecta de ahw->hw_ops->alloc_mbx_args para asignar memoria para cmd.req.arg, y hay una desreferencia del mismo en qlcnic_83xx_add_rings(), lo que podría llevar a una desreferencia del puntero NULL en caso de falla de la función indirecta como qlcnic_83xx_alloc_mbx_args(). Corrija este error agregando una verificación de alloc_mbx_args(); este parche imita la lógica del manejo de fallas de mbx_cmd(). 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_QLCNIC=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: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-476"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"4.4.294","matchCriteriaId":"ADB9EFEF-ACB0-4A8F-AB11-363006921493"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"4.9.292","matchCriteriaId":"DB7F6C04-42D3-48A3-892D-2487383B9B6E"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"4.14.257","matchCriteriaId":"7080D941-9847-42F5-BA50-0A03CFB61FD1"},{"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/15fa12c119f869173f9b710cbe6a4a14071d2105","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/3a061d54e260b701b538873b43e399d9b8b83e03","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/550658a2d61e4eaf522c8ebc7fad76dc376bfb45","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/57af54a56024435d83e44c78449513b414eb6edf","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/b4f217d6fcc00c3fdc0921a7691f30be7490b073","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/bbeb0325a7460ebf1e03f5e0bfc5c652fba9519f","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/c5ef33c1489b2cd74368057fa00b5d2183bb5853","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/e2dabc4f7e7b60299c20a36d6a7b24ed9bf8e572","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/15fa12c119f869173f9b710cbe6a4a14071d2105","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/3a061d54e260b701b538873b43e399d9b8b83e03","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/550658a2d61e4eaf522c8ebc7fad76dc376bfb45","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/57af54a56024435d83e44c78449513b414eb6edf","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/b4f217d6fcc00c3fdc0921a7691f30be7490b073","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/bbeb0325a7460ebf1e03f5e0bfc5c652fba9519f","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/c5ef33c1489b2cd74368057fa00b5d2183bb5853","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/e2dabc4f7e7b60299c20a36d6a7b24ed9bf8e572","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]}]}}]}