{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-05T11:42:43.939","vulnerabilities":[{"cve":{"id":"CVE-2025-37890","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2025-05-16T13:15:52.437","lastModified":"2025-11-17T17:11:57.840","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc\n\nAs described in Gerrard's report [1], we have a UAF case when an hfsc class\nhas a netem child qdisc. The crux of the issue is that hfsc is assuming\nthat checking for cl->qdisc->q.qlen == 0 guarantees that it hasn't inserted\nthe class in the vttree or eltree (which is not true for the netem\nduplicate case).\n\nThis patch checks the n_active class variable to make sure that the code\nwon't insert the class in the vttree or eltree twice, catering for the\nreentrant case.\n\n[1] https://lore.kernel.org/netdev/CAHcdcOm+03OD2j6R0=YHKqmy=VgJ8xEOKuP6c7mSgnp-TEJJbw@mail.gmail.com/"},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net_sched: hfsc: corrige una vulnerabilidad UAF en la clase con netem como qdisc hijo Como se describe en el informe de Gerrard [1], tenemos un caso UAF cuando una clase hfsc tiene una qdisc hijo netem. El quid de la cuestión es que hfsc asume que la comprobación de cl->qdisc->q.qlen == 0 garantiza que no ha insertado la clase en vttree o eltree (lo que no es cierto para el caso de duplicado de netem). Este parche comprueba la variable de clase n_active para asegurarse de que el código no inserte la clase en vttree o eltree dos veces, atendiendo al caso reentrante. [1] https://lore.kernel.org/netdev/CAHcdcOm+03OD2j6R0=YHKqmy=VgJ8xEOKuP6c7mSgnp-TEJJbw@mail.gmail.com/"}],"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":"5.0.1","versionEndExcluding":"5.4.294","matchCriteriaId":"DEC27C91-8035-49D5-8C57-B8F8541B23F7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.238","matchCriteriaId":"0DAAEF7F-D560-47FC-8B65-20404DB82432"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.182","matchCriteriaId":"57E76AE8-79D9-4EC8-9845-9A86B1ED152E"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.138","matchCriteriaId":"B6266F82-46B4-4D38-AC4A-54C92A1DFAB2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.90","matchCriteriaId":"2BE1DB09-2D62-4C63-AF19-947300669741"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.28","matchCriteriaId":"5082CE19-0F3D-4521-AB3E-810D8255F500"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.14.6","matchCriteriaId":"19E5095E-5950-43EA-8E78-FC860855293F"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.0:-:*:*:*:*:*:*","matchCriteriaId":"1D0FE595-0CFE-4491-808B-CEF691CE7B0A"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.0:rc3:*:*:*:*:*:*","matchCriteriaId":"963CFC36-FBAD-465F-9891-CDBBF962DFDD"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.0:rc4:*:*:*:*:*:*","matchCriteriaId":"1B084A7A-6047-4804-9395-6000E4A43828"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.0:rc5:*:*:*:*:*:*","matchCriteriaId":"C3430640-AC87-44BF-ABF5-09E0A97E3758"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.0:rc6:*:*:*:*:*:*","matchCriteriaId":"FDF49B77-4688-4908-9239-89B729456D22"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.0:rc7:*:*:*:*:*:*","matchCriteriaId":"77F342FB-3D7B-4EAE-BF8B-57B7B860BAFD"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.0:rc8:*:*:*:*:*:*","matchCriteriaId":"47D61679-6515-4E18-83C7-A71982CCD83C"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*","matchCriteriaId":"8D465631-2980-487A-8E65-40AE2B9F8ED1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*","matchCriteriaId":"4C9D071F-B28E-46EC-AC61-22B913390211"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*","matchCriteriaId":"13FC0DDE-E513-465E-9E81-515702D49B74"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:*","matchCriteriaId":"8C7B5B0E-4EEB-48F5-B4CF-0935A7633845"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*","matchCriteriaId":"FA6FEEC2-9F11-4643-8827-749718254FED"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/141d34391abbb315d68556b7c67ad97885407547","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/273bbcfa53541cde38b2003ad88a59b770306421","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/2e7093c7a8aba5d4f8809f271488e5babe75e202","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6082a87af4c52f58150d40dec1716011d871ac21","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/8df7d37d626430035b413b97cee18396b3450bef","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/ac39fd4a757584d78ed062d4f6fd913f83bd98b5","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/e0cf8ee23e1915431f262a7b2dee0c7a7d699af0","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/e3e949a39a91d1f829a4890e7dfe9417ac72e4d0","source":"416baaa9-dc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