{"api_version":"1","generated_at":"2026-09-17T23:59:17+00:00","cve":"CVE-2026-93119","urls":{"html":"https://cve.report/CVE-2026-93119","api":"https://cve.report/api/cve/CVE-2026-93119.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93119","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93119"},"summary":{"title":"usb: ljca: bound bank_num in ljca_enumerate_gpio()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: ljca: bound bank_num in ljca_enumerate_gpio()\n\nljca_enumerate_gpio() reads desc->bank_num from the device and loops\nvalid_pin[i] = get_unaligned_le32(...) for i < bank_num. valid_pin[]\nholds only LJCA_MAX_GPIO_NUM / 32 = 2 entries.\n\nTwo checks run before the loop. The reply length must match\nstruct_size(desc, bank_desc, bank_num). The product\npins_per_bank * bank_num must not exceed LJCA_MAX_GPIO_NUM. Neither one\nbounds bank_num against the size of valid_pin[]. The reply is capped at\nLJCA_MAX_PAYLOAD_SIZE (60) bytes, so the struct_size check limits\nbank_num to 9. A device that reports bank_num 9 with pins_per_bank 7\nstill passes both checks. gpio_num is 63 and the reply is 56 bytes. The\nloop then writes nine u32 into the two entry array and overruns\nvalid_pin[] on the stack.\n\nA broken or malicious LJCA device can therefore overflow the stack.\nReject a bank_num that does not fit valid_pin[].","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:18:06","updated_at":"2026-09-17 17:18:06"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/dd9483726d0f16c1a56879c3edb65128259a4e2b","name":"https://git.kernel.org/stable/c/dd9483726d0f16c1a56879c3edb65128259a4e2b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9c4bc8f7426aa001387800bf0140bfc5087a6de3","name":"https://git.kernel.org/stable/c/9c4bc8f7426aa001387800bf0140bfc5087a6de3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/aed958c4f784a29cf42abb3e54af51a16bddde46","name":"https://git.kernel.org/stable/c/aed958c4f784a29cf42abb3e54af51a16bddde46","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0069593170a3d177de793c9a0b36989c4f069111","name":"https://git.kernel.org/stable/c/0069593170a3d177de793c9a0b36989c4f069111","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93119","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93119","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected acd6199f195d6de814ac4090ce0864a613b1580e 0069593170a3d177de793c9a0b36989c4f069111 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected acd6199f195d6de814ac4090ce0864a613b1580e aed958c4f784a29cf42abb3e54af51a16bddde46 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected acd6199f195d6de814ac4090ce0864a613b1580e 9c4bc8f7426aa001387800bf0140bfc5087a6de3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected acd6199f195d6de814ac4090ce0864a613b1580e dd9483726d0f16c1a56879c3edb65128259a4e2b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.7","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.7 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * 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/usb/misc/usb-ljca.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0069593170a3d177de793c9a0b36989c4f069111","status":"affected","version":"acd6199f195d6de814ac4090ce0864a613b1580e","versionType":"git"},{"lessThan":"aed958c4f784a29cf42abb3e54af51a16bddde46","status":"affected","version":"acd6199f195d6de814ac4090ce0864a613b1580e","versionType":"git"},{"lessThan":"9c4bc8f7426aa001387800bf0140bfc5087a6de3","status":"affected","version":"acd6199f195d6de814ac4090ce0864a613b1580e","versionType":"git"},{"lessThan":"dd9483726d0f16c1a56879c3edb65128259a4e2b","status":"affected","version":"acd6199f195d6de814ac4090ce0864a613b1580e","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/usb/misc/usb-ljca.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.7"},{"lessThan":"6.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"6.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"6.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.7","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: ljca: bound bank_num in ljca_enumerate_gpio()\n\nljca_enumerate_gpio() reads desc->bank_num from the device and loops\nvalid_pin[i] = get_unaligned_le32(...) for i < bank_num. valid_pin[]\nholds only LJCA_MAX_GPIO_NUM / 32 = 2 entries.\n\nTwo checks run before the loop. The reply length must match\nstruct_size(desc, bank_desc, bank_num). The product\npins_per_bank * bank_num must not exceed LJCA_MAX_GPIO_NUM. Neither one\nbounds bank_num against the size of valid_pin[]. The reply is capped at\nLJCA_MAX_PAYLOAD_SIZE (60) bytes, so the struct_size check limits\nbank_num to 9. A device that reports bank_num 9 with pins_per_bank 7\nstill passes both checks. gpio_num is 63 and the reply is 56 bytes. The\nloop then writes nine u32 into the two entry array and overruns\nvalid_pin[] on the stack.\n\nA broken or malicious LJCA device can therefore overflow the stack.\nReject a bank_num that does not fit valid_pin[]."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:11:25.867Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/0069593170a3d177de793c9a0b36989c4f069111"},{"url":"https://git.kernel.org/stable/c/aed958c4f784a29cf42abb3e54af51a16bddde46"},{"url":"https://git.kernel.org/stable/c/9c4bc8f7426aa001387800bf0140bfc5087a6de3"},{"url":"https://git.kernel.org/stable/c/dd9483726d0f16c1a56879c3edb65128259a4e2b"}],"title":"usb: ljca: bound bank_num in ljca_enumerate_gpio()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-93119","datePublished":"2026-09-17T16:11:25.867Z","dateReserved":"2026-09-17T16:02:15.086Z","dateUpdated":"2026-09-17T16:11:25.867Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:18:06","lastModifiedDate":"2026-09-17 17:18:06","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"93119","Ordinal":"1","Title":"usb: ljca: bound bank_num in ljca_enumerate_gpio()","CVE":"CVE-2026-93119","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"93119","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: ljca: bound bank_num in ljca_enumerate_gpio()\n\nljca_enumerate_gpio() reads desc->bank_num from the device and loops\nvalid_pin[i] = get_unaligned_le32(...) for i < bank_num. valid_pin[]\nholds only LJCA_MAX_GPIO_NUM / 32 = 2 entries.\n\nTwo checks run before the loop. The reply length must match\nstruct_size(desc, bank_desc, bank_num). The product\npins_per_bank * bank_num must not exceed LJCA_MAX_GPIO_NUM. Neither one\nbounds bank_num against the size of valid_pin[]. The reply is capped at\nLJCA_MAX_PAYLOAD_SIZE (60) bytes, so the struct_size check limits\nbank_num to 9. A device that reports bank_num 9 with pins_per_bank 7\nstill passes both checks. gpio_num is 63 and the reply is 56 bytes. The\nloop then writes nine u32 into the two entry array and overruns\nvalid_pin[] on the stack.\n\nA broken or malicious LJCA device can therefore overflow the stack.\nReject a bank_num that does not fit valid_pin[].","Type":"Description","Title":"usb: ljca: bound bank_num in ljca_enumerate_gpio()"}]}}}