{"id":"CVE-2026-46092","state":"PUBLISHED","title":"wifi: rtw88: check for PCI upstream bridge existence","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw88: check for PCI upstream bridge existence\n\npci_upstream_bridge() returns NULL if the device is on a root bus.  If\n8821CE is installed in the system with such a PCI topology, the probing\nroutine will crash.  This has probably been unnoticed as 8821CE is mostly\nsupplied in laptops where there is a PCI-to-PCI bridge located upstream\nfrom the device.  However the card might be installed on a system with\ndifferent configuration.\n\nCheck if the bridge does exist for the specific workaround to be applied.\n\nFound by Linux Verification Center (linuxtesting.org) with Svace static\nanalysis tool.","publishedAt":"2026-05-27T12:58:37.088Z","updatedAt":"2026-10-15T01:20:27.183Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"617339466fda09916c4b4151fa5e6a9c1fdae353","status":"affected","lessThan":"959c13da6c36167ce1016d400a6104d2367f686e","versionType":"git"},{"version":"24f5e38a13b5ae2b6105cda8bb47c19108e62a9a","status":"affected","lessThan":"3b89b4c095804c478d50376285e66700cf3c045f","versionType":"git"},{"version":"24f5e38a13b5ae2b6105cda8bb47c19108e62a9a","status":"affected","lessThan":"cc9b6303e7ea91bc360b42c7edc1fe9ceb2f47fe","versionType":"git"},{"version":"24f5e38a13b5ae2b6105cda8bb47c19108e62a9a","status":"affected","lessThan":"6c53d68e3bcfc8faccdd76c3383a9232b05c9ae6","versionType":"git"},{"version":"24f5e38a13b5ae2b6105cda8bb47c19108e62a9a","status":"affected","lessThan":"000134a20bbf89b1152520a2eef71f91fdb83a5b","versionType":"git"},{"version":"24f5e38a13b5ae2b6105cda8bb47c19108e62a9a","status":"affected","lessThan":"3bbbb56204f7359ce2139a9341b43b52a186261c","versionType":"git"},{"version":"24f5e38a13b5ae2b6105cda8bb47c19108e62a9a","status":"affected","lessThan":"eb101d2abdcccb514ca4fccd3b278dd8267374f6","versionType":"git"},{"version":"f21e8cb927fa9da49490b74ddda3856a828b82d6","status":"affected","versionType":"git"},{"version":"5.15.17","status":"affected","lessThan":"5.15.210","versionType":"semver"},{"version":"5.16.3","status":"affected","lessThan":"5.17","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/realtek/rtw88/pci.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.17","versionType":"semver"},{"version":"5.15.210","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.140","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.86","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.27","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.4","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/realtek/rtw88/pci.c"]}],"references":["https://git.kernel.org/stable/c/959c13da6c36167ce1016d400a6104d2367f686e","https://git.kernel.org/stable/c/3b89b4c095804c478d50376285e66700cf3c045f","https://git.kernel.org/stable/c/cc9b6303e7ea91bc360b42c7edc1fe9ceb2f47fe","https://git.kernel.org/stable/c/6c53d68e3bcfc8faccdd76c3383a9232b05c9ae6","https://git.kernel.org/stable/c/000134a20bbf89b1152520a2eef71f91fdb83a5b","https://git.kernel.org/stable/c/3bbbb56204f7359ce2139a9341b43b52a186261c","https://git.kernel.org/stable/c/eb101d2abdcccb514ca4fccd3b278dd8267374f6","https://cert-portal.siemens.com/productcert/html/ssa-784472.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46092.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46092","state":"PUBLISHED","datePublished":"2026-05-27T12:58:37.088Z","dateUpdated":"2026-10-15T01:20:27.183Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.097Z"},"containers":{"cna":{"title":"wifi: rtw88: check for PCI upstream bridge existence","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw88: check for PCI upstream bridge existence\n\npci_upstream_bridge() returns NULL if the device is on a root bus.  If\n8821CE is installed in the system with such a PCI topology, the probing\nroutine will crash.  This has probably been unnoticed as 8821CE is mostly\nsupplied in laptops where there is a PCI-to-PCI bridge located upstream\nfrom the device.  However the card might be installed on a system with\ndifferent configuration.\n\nCheck if the bridge does exist for the specific workaround to be applied.\n\nFound by Linux Verification Center (linuxtesting.org) with Svace static\nanalysis tool."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"617339466fda09916c4b4151fa5e6a9c1fdae353","status":"affected","lessThan":"959c13da6c36167ce1016d400a6104d2367f686e","versionType":"git"},{"version":"24f5e38a13b5ae2b6105cda8bb47c19108e62a9a","status":"affected","lessThan":"3b89b4c095804c478d50376285e66700cf3c045f","versionType":"git"},{"version":"24f5e38a13b5ae2b6105cda8bb47c19108e62a9a","status":"affected","lessThan":"cc9b6303e7ea91bc360b42c7edc1fe9ceb2f47fe","versionType":"git"},{"version":"24f5e38a13b5ae2b6105cda8bb47c19108e62a9a","status":"affected","lessThan":"6c53d68e3bcfc8faccdd76c3383a9232b05c9ae6","versionType":"git"},{"version":"24f5e38a13b5ae2b6105cda8bb47c19108e62a9a","status":"affected","lessThan":"000134a20bbf89b1152520a2eef71f91fdb83a5b","versionType":"git"},{"version":"24f5e38a13b5ae2b6105cda8bb47c19108e62a9a","status":"affected","lessThan":"3bbbb56204f7359ce2139a9341b43b52a186261c","versionType":"git"},{"version":"24f5e38a13b5ae2b6105cda8bb47c19108e62a9a","status":"affected","lessThan":"eb101d2abdcccb514ca4fccd3b278dd8267374f6","versionType":"git"},{"version":"f21e8cb927fa9da49490b74ddda3856a828b82d6","status":"affected","versionType":"git"},{"version":"5.15.17","status":"affected","lessThan":"5.15.210","versionType":"semver"},{"version":"5.16.3","status":"affected","lessThan":"5.17","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/realtek/rtw88/pci.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.17","versionType":"semver"},{"version":"5.15.210","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.140","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.86","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.27","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.4","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/realtek/rtw88/pci.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/959c13da6c36167ce1016d400a6104d2367f686e"},{"url":"https://git.kernel.org/stable/c/3b89b4c095804c478d50376285e66700cf3c045f"},{"url":"https://git.kernel.org/stable/c/cc9b6303e7ea91bc360b42c7edc1fe9ceb2f47fe"},{"url":"https://git.kernel.org/stable/c/6c53d68e3bcfc8faccdd76c3383a9232b05c9ae6"},{"url":"https://git.kernel.org/stable/c/000134a20bbf89b1152520a2eef71f91fdb83a5b"},{"url":"https://git.kernel.org/stable/c/3bbbb56204f7359ce2139a9341b43b52a186261c"},{"url":"https://git.kernel.org/stable/c/eb101d2abdcccb514ca4fccd3b278dd8267374f6"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-07-16T11:13:51.937Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.17","versionEndExcluding":"5.15.210"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.6.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.12.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.18.27"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"7.0.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"7.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"*","versionType":"custom"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}],"providerMetadata":{"shortName":"siemens-SADP","orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","dateUpdated":"2026-10-15T01:20:27.183Z"},"x_adpType":"supplier"}]}}}