{"api_version":"1","generated_at":"2026-06-02T09:01:47+00:00","cve":"CVE-2026-46026","urls":{"html":"https://cve.report/CVE-2026-46026","api":"https://cve.report/api/cve/CVE-2026-46026.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46026","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46026"},"summary":{"title":"net: qrtr: ns: Limit the maximum number of lookups","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: ns: Limit the maximum number of lookups\n\nCurrent code does no bound checking on the number of lookups a client can\nperform. Though the code restricts the lookups to local clients, there is\nstill a possibility of a malicious local client sending a flood of\nNEW_LOOKUP messages over the same socket.\n\nFix this issue by limiting the maximum number of lookups to 64 globally.\nSince the nameserver allows only atmost one local observer, this global\nlookup count will ensure that the lookups stay within the limit.\n\nNote that, limit of 64 is chosen based on the current platform\nrequirements. If requirement changes in the future, this limit can be\nincreased.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-27 14:17:21","updated_at":"2026-05-27 14:48:03"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/76adf8f69b0bb3ab20be7c58f5d555027332d113","name":"https://git.kernel.org/stable/c/76adf8f69b0bb3ab20be7c58f5d555027332d113","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2b930bc77e00cb27e1d6e1d497b3b596283465ef","name":"https://git.kernel.org/stable/c/2b930bc77e00cb27e1d6e1d497b3b596283465ef","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0dbec101a7076e9b1e4bd1876f7cf07c56ff4ce3","name":"https://git.kernel.org/stable/c/0dbec101a7076e9b1e4bd1876f7cf07c56ff4ce3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5640227d9a21c6a8be249a10677b832e7f40dc55","name":"https://git.kernel.org/stable/c/5640227d9a21c6a8be249a10677b832e7f40dc55","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/20855cef7e659ef84ac73251256fa530819b2346","name":"https://git.kernel.org/stable/c/20855cef7e659ef84ac73251256fa530819b2346","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46026","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46026","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0c2204a4ad710d95d348ea006f14ba926e842ffd 0dbec101a7076e9b1e4bd1876f7cf07c56ff4ce3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0c2204a4ad710d95d348ea006f14ba926e842ffd 76adf8f69b0bb3ab20be7c58f5d555027332d113 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0c2204a4ad710d95d348ea006f14ba926e842ffd 20855cef7e659ef84ac73251256fa530819b2346 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 0c2204a4ad710d95d348ea006f14ba926e842ffd 2b930bc77e00cb27e1d6e1d497b3b596283465ef git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"46026","cve":"CVE-2026-46026","epss":"0.000180000","percentile":"0.050770000","score_date":"2026-06-01","updated_at":"2026-06-02 00:05:21"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/qrtr/ns.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0dbec101a7076e9b1e4bd1876f7cf07c56ff4ce3","status":"affected","version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","versionType":"git"},{"lessThan":"76adf8f69b0bb3ab20be7c58f5d555027332d113","status":"affected","version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","versionType":"git"},{"lessThan":"20855cef7e659ef84ac73251256fa530819b2346","status":"affected","version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","versionType":"git"},{"lessThan":"2b930bc77e00cb27e1d6e1d497b3b596283465ef","status":"affected","version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","versionType":"git"},{"lessThan":"5640227d9a21c6a8be249a10677b832e7f40dc55","status":"affected","version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/qrtr/ns.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.7"},{"lessThan":"5.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.140","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.86","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.27","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.140","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.86","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.27","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.4","versionStartIncluding":"5.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc1","versionStartIncluding":"5.7","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: ns: Limit the maximum number of lookups\n\nCurrent code does no bound checking on the number of lookups a client can\nperform. Though the code restricts the lookups to local clients, there is\nstill a possibility of a malicious local client sending a flood of\nNEW_LOOKUP messages over the same socket.\n\nFix this issue by limiting the maximum number of lookups to 64 globally.\nSince the nameserver allows only atmost one local observer, this global\nlookup count will ensure that the lookups stay within the limit.\n\nNote that, limit of 64 is chosen based on the current platform\nrequirements. If requirement changes in the future, this limit can be\nincreased."}],"providerMetadata":{"dateUpdated":"2026-05-27T12:56:32.596Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/0dbec101a7076e9b1e4bd1876f7cf07c56ff4ce3"},{"url":"https://git.kernel.org/stable/c/76adf8f69b0bb3ab20be7c58f5d555027332d113"},{"url":"https://git.kernel.org/stable/c/20855cef7e659ef84ac73251256fa530819b2346"},{"url":"https://git.kernel.org/stable/c/2b930bc77e00cb27e1d6e1d497b3b596283465ef"},{"url":"https://git.kernel.org/stable/c/5640227d9a21c6a8be249a10677b832e7f40dc55"}],"title":"net: qrtr: ns: Limit the maximum number of lookups","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46026","datePublished":"2026-05-27T12:56:32.596Z","dateReserved":"2026-05-13T15:03:33.093Z","dateUpdated":"2026-05-27T12:56:32.596Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-27 14:17:21","lastModifiedDate":"2026-05-27 14:48:03","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46026","Ordinal":"1","Title":"net: qrtr: ns: Limit the maximum number of lookups","CVE":"CVE-2026-46026","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46026","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: ns: Limit the maximum number of lookups\n\nCurrent code does no bound checking on the number of lookups a client can\nperform. Though the code restricts the lookups to local clients, there is\nstill a possibility of a malicious local client sending a flood of\nNEW_LOOKUP messages over the same socket.\n\nFix this issue by limiting the maximum number of lookups to 64 globally.\nSince the nameserver allows only atmost one local observer, this global\nlookup count will ensure that the lookups stay within the limit.\n\nNote that, limit of 64 is chosen based on the current platform\nrequirements. If requirement changes in the future, this limit can be\nincreased.","Type":"Description","Title":"net: qrtr: ns: Limit the maximum number of lookups"}]}}}