{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-02T05:49:25.347","vulnerabilities":[{"cve":{"id":"CVE-2021-47012","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-02-28T09:15:38.753","lastModified":"2024-12-09T18:24:59.420","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/siw: Fix a use after free in siw_alloc_mr\n\nOur code analyzer reported a UAF.\n\nIn siw_alloc_mr(), it calls siw_mr_add_mem(mr,..). In the implementation of\nsiw_mr_add_mem(), mem is assigned to mr->mem and then mem is freed via\nkfree(mem) if xa_alloc_cyclic() failed. Here, mr->mem still point to a\nfreed object. After, the execution continue up to the err_out branch of\nsiw_alloc_mr, and the freed mr->mem is used in siw_mr_drop_mem(mr).\n\nMy patch moves \"mr->mem = mem\" behind the if (xa_alloc_cyclic(..)<0) {}\nsection, to avoid the uaf."},{"lang":"es","value":"En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: RDMA/siw: Corrige un use after free en siw_alloc_mr Nuestro analizador de código informó un UAF. En siw_alloc_mr(), llama a siw_mr_add_mem(mr,..). En la implementación de siw_mr_add_mem(), mem se asigna a mr-&gt;mem y luego mem se libera mediante kfree(mem) si xa_alloc_ciclic() falla. Aquí, mr-&gt;mem todavía apunta a un objeto liberado. Después, la ejecución continúa hasta la rama err_out de siw_alloc_mr, y el mr-&gt;mem liberado se usa en siw_mr_drop_mem(mr). Mi parche mueve \"mr-&gt;mem = mem\" detrás de la sección if (xa_alloc_ciclic(..)&lt;0) {}, para evitar el uaf."}],"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":"5.3","versionEndExcluding":"5.4.119","matchCriteriaId":"2196F00F-D829-48E9-87B7-31759423D345"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.37","matchCriteriaId":"7A4CF5D6-ACBA-4980-ABFD-3D7A53B5BB4E"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.11.21","matchCriteriaId":"8CBB94EC-EC33-4464-99C5-03E5542715F0"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.12.4","matchCriteriaId":"D8C7052F-1B7B-4327-9C2B-84EBF3243838"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/3093ee182f01689b89e9f8797b321603e5de4f63","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/30b9e92d0b5e5d5dc1101ab856c17009537cbca4","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/3e22b88e02c194f6c80867abfef5cc09383461f4","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/608a4b90ece039940e9425ee2b39c8beff27e00c","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/ad9ce7188432650469a6c7625bf479f5ed0b6155","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/3093ee182f01689b89e9f8797b321603e5de4f63","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/30b9e92d0b5e5d5dc1101ab856c17009537cbca4","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/3e22b88e02c194f6c80867abfef5cc09383461f4","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/608a4b90ece039940e9425ee2b39c8beff27e00c","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/ad9ce7188432650469a6c7625bf479f5ed0b6155","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]}]}}]}