{"api_version":"1","generated_at":"2026-05-13T07:41:46+00:00","cve":"CVE-2026-43156","urls":{"html":"https://cve.report/CVE-2026-43156","api":"https://cve.report/api/cve/CVE-2026-43156.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43156","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43156"},"summary":{"title":"net: usb: pegasus: enable basic endpoint checking","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: pegasus: enable basic endpoint checking\n\npegasus_probe() fills URBs with hardcoded endpoint pipes without\nverifying the endpoint descriptors:\n\n  - usb_rcvbulkpipe(dev, 1) for RX data\n  - usb_sndbulkpipe(dev, 2) for TX data\n  - usb_rcvintpipe(dev, 3)  for status interrupts\n\nA malformed USB device can present these endpoints with transfer types\nthat differ from what the driver assumes.\n\nAdd a pegasus_usb_ep enum for endpoint numbers, replacing magic\nconstants throughout. Add usb_check_bulk_endpoints() and\nusb_check_int_endpoints() calls before any resource allocation to\nverify endpoint types before use, rejecting devices with mismatched\ndescriptors at probe time, and avoid triggering assertion.\n\nSimilar fix to\n- commit 90b7f2961798 (\"net: usb: rtl8150: enable basic endpoint checking\")\n- commit 9e7021d2aeae (\"net: usb: catc: enable basic endpoint checking\")","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-06 12:16:33","updated_at":"2026-05-06 13:07:51"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/67ba6b13dbcaf45681fb6758794c5ac5fa589a6c","name":"https://git.kernel.org/stable/c/67ba6b13dbcaf45681fb6758794c5ac5fa589a6c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a3e64e950a3981a8199de9798f6d21261b959171","name":"https://git.kernel.org/stable/c/a3e64e950a3981a8199de9798f6d21261b959171","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/229dc9b9db475ac900182bafe258943e0e054c6d","name":"https://git.kernel.org/stable/c/229dc9b9db475ac900182bafe258943e0e054c6d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3d7e6ce34f4fcc7083510c28b17a7c36462a25d4","name":"https://git.kernel.org/stable/c/3d7e6ce34f4fcc7083510c28b17a7c36462a25d4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d2e7c898cc02dfe42443489a67a45ed616cb76e9","name":"https://git.kernel.org/stable/c/d2e7c898cc02dfe42443489a67a45ed616cb76e9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/26b3ec62fa1a94ac801feca47f040fc729b3c174","name":"https://git.kernel.org/stable/c/26b3ec62fa1a94ac801feca47f040fc729b3c174","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2705709f6574a088aab246af72fc95f2fea51484","name":"https://git.kernel.org/stable/c/2705709f6574a088aab246af72fc95f2fea51484","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/35854ed5c40b02f95824e44398f9d2ba33727203","name":"https://git.kernel.org/stable/c/35854ed5c40b02f95824e44398f9d2ba33727203","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43156","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43156","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 a3e64e950a3981a8199de9798f6d21261b959171 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 229dc9b9db475ac900182bafe258943e0e054c6d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 26b3ec62fa1a94ac801feca47f040fc729b3c174 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 35854ed5c40b02f95824e44398f9d2ba33727203 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.202 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.165 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.128 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.75 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.16 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.6 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/usb/pegasus.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a3e64e950a3981a8199de9798f6d21261b959171","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"229dc9b9db475ac900182bafe258943e0e054c6d","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"26b3ec62fa1a94ac801feca47f040fc729b3c174","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"35854ed5c40b02f95824e44398f9d2ba33727203","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"67ba6b13dbcaf45681fb6758794c5ac5fa589a6c","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"d2e7c898cc02dfe42443489a67a45ed616cb76e9","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"2705709f6574a088aab246af72fc95f2fea51484","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"3d7e6ce34f4fcc7083510c28b17a7c36462a25d4","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/usb/pegasus.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.12"},{"lessThan":"2.6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.252","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.202","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.165","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.128","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.75","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.16","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.252","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.202","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.165","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.128","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.75","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.16","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.6","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"2.6.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: pegasus: enable basic endpoint checking\n\npegasus_probe() fills URBs with hardcoded endpoint pipes without\nverifying the endpoint descriptors:\n\n  - usb_rcvbulkpipe(dev, 1) for RX data\n  - usb_sndbulkpipe(dev, 2) for TX data\n  - usb_rcvintpipe(dev, 3)  for status interrupts\n\nA malformed USB device can present these endpoints with transfer types\nthat differ from what the driver assumes.\n\nAdd a pegasus_usb_ep enum for endpoint numbers, replacing magic\nconstants throughout. Add usb_check_bulk_endpoints() and\nusb_check_int_endpoints() calls before any resource allocation to\nverify endpoint types before use, rejecting devices with mismatched\ndescriptors at probe time, and avoid triggering assertion.\n\nSimilar fix to\n- commit 90b7f2961798 (\"net: usb: rtl8150: enable basic endpoint checking\")\n- commit 9e7021d2aeae (\"net: usb: catc: enable basic endpoint checking\")"}],"providerMetadata":{"dateUpdated":"2026-05-06T11:27:36.491Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/a3e64e950a3981a8199de9798f6d21261b959171"},{"url":"https://git.kernel.org/stable/c/229dc9b9db475ac900182bafe258943e0e054c6d"},{"url":"https://git.kernel.org/stable/c/26b3ec62fa1a94ac801feca47f040fc729b3c174"},{"url":"https://git.kernel.org/stable/c/35854ed5c40b02f95824e44398f9d2ba33727203"},{"url":"https://git.kernel.org/stable/c/67ba6b13dbcaf45681fb6758794c5ac5fa589a6c"},{"url":"https://git.kernel.org/stable/c/d2e7c898cc02dfe42443489a67a45ed616cb76e9"},{"url":"https://git.kernel.org/stable/c/2705709f6574a088aab246af72fc95f2fea51484"},{"url":"https://git.kernel.org/stable/c/3d7e6ce34f4fcc7083510c28b17a7c36462a25d4"}],"title":"net: usb: pegasus: enable basic endpoint checking","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43156","datePublished":"2026-05-06T11:27:36.491Z","dateReserved":"2026-05-01T14:12:55.989Z","dateUpdated":"2026-05-06T11:27:36.491Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-06 12:16:33","lastModifiedDate":"2026-05-06 13:07:51","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43156","Ordinal":"1","Title":"net: usb: pegasus: enable basic endpoint checking","CVE":"CVE-2026-43156","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43156","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: pegasus: enable basic endpoint checking\n\npegasus_probe() fills URBs with hardcoded endpoint pipes without\nverifying the endpoint descriptors:\n\n  - usb_rcvbulkpipe(dev, 1) for RX data\n  - usb_sndbulkpipe(dev, 2) for TX data\n  - usb_rcvintpipe(dev, 3)  for status interrupts\n\nA malformed USB device can present these endpoints with transfer types\nthat differ from what the driver assumes.\n\nAdd a pegasus_usb_ep enum for endpoint numbers, replacing magic\nconstants throughout. Add usb_check_bulk_endpoints() and\nusb_check_int_endpoints() calls before any resource allocation to\nverify endpoint types before use, rejecting devices with mismatched\ndescriptors at probe time, and avoid triggering assertion.\n\nSimilar fix to\n- commit 90b7f2961798 (\"net: usb: rtl8150: enable basic endpoint checking\")\n- commit 9e7021d2aeae (\"net: usb: catc: enable basic endpoint checking\")","Type":"Description","Title":"net: usb: pegasus: enable basic endpoint checking"}]}}}