{"id":"CVE-2026-43156","title":"net: usb: pegasus: enable basic endpoint checking","summary":"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_rcvbulk…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a3e64e950a3981a8199de9798f6d21261b959171","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 229dc9b9db475ac900182bafe258943e0e054c6d","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 26b3ec62fa1a94ac801feca47f040fc729b3c174","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 35854ed5c40b02f95824e44398f9d2ba33727203","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 67ba6b13dbcaf45681fb6758794c5ac5fa589a6c","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d2e7c898cc02dfe42443489a67a45ed616cb76e9","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2705709f6574a088aab246af72fc95f2fea51484","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3d7e6ce34f4fcc7083510c28b17a7c36462a25d4","Linux 2.6.12"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T15:29:51.233976Z"},"published":"2026-05-06","updated":"2026-11-06","sourceUpdated":"2026-11-06T15:32:34.240Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43156","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"}],"tags":["cve.org"],"epss":0.00123,"epssPercentile":0.02059,"ingestedAt":"2026-11-06T15:54:04.021Z","slug":"CVE-2026-43156","body":"## Overview\n\nIn 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\")\n\n## Affected\n\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a3e64e950a3981a8199de9798f6d21261b959171`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 229dc9b9db475ac900182bafe258943e0e054c6d`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 26b3ec62fa1a94ac801feca47f040fc729b3c174`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 35854ed5c40b02f95824e44398f9d2ba33727203`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 67ba6b13dbcaf45681fb6758794c5ac5fa589a6c`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d2e7c898cc02dfe42443489a67a45ed616cb76e9`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2705709f6574a088aab246af72fc95f2fea51484`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3d7e6ce34f4fcc7083510c28b17a7c36462a25d4`\n- `Linux 2.6.12`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}