{"id":"CVE-2026-46009","state":"PUBLISHED","title":"PCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown\n\nepf_ntb_epc_destroy() duplicates the teardown that the caller is\nsupposed to do later. This leads to an oops when .allow_link fails or\nwhen .drop_link is performed. Remove the helper.\n\nAlso drop pci_epc_put(). EPC device refcounting is tied to configfs EPC\ngroup lifetime, and pci_epc_put() in the .drop_link path is sufficient.","publishedAt":"2026-05-27T12:56:09.581Z","updatedAt":"2026-06-14T17:47:44.154Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8b821cf761503b80d0bd052f932adfe1bc1a0088","status":"affected","lessThan":"c3029721b84f59e790285ad27544ed5d3cb0f2a6","versionType":"git"},{"version":"8b821cf761503b80d0bd052f932adfe1bc1a0088","status":"affected","lessThan":"c72f6a7ea638f95c486a5cfd86e567b646027687","versionType":"git"},{"version":"8b821cf761503b80d0bd052f932adfe1bc1a0088","status":"affected","lessThan":"72099f015d3c77bf2eb703d1aab113bd7a60915a","versionType":"git"},{"version":"8b821cf761503b80d0bd052f932adfe1bc1a0088","status":"affected","lessThan":"756ca5e7ed22d9045bb4de4c981f9149278d5cd3","versionType":"git"},{"version":"8b821cf761503b80d0bd052f932adfe1bc1a0088","status":"affected","lessThan":"65fc57c8b8f0b31be62be291cb1bb01755cec85d","versionType":"git"},{"version":"8b821cf761503b80d0bd052f932adfe1bc1a0088","status":"affected","lessThan":"e813c95e4c8edd31599081e6356e20ada30e266d","versionType":"git"},{"version":"8b821cf761503b80d0bd052f932adfe1bc1a0088","status":"affected","lessThan":"3446beddba450c8d6f9aca2f028712ac527fead3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pci/endpoint/functions/pci-epf-ntb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.12","versionType":"semver"},{"version":"5.15.209","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/pci/endpoint/functions/pci-epf-ntb.c"]}],"references":["https://git.kernel.org/stable/c/c3029721b84f59e790285ad27544ed5d3cb0f2a6","https://git.kernel.org/stable/c/c72f6a7ea638f95c486a5cfd86e567b646027687","https://git.kernel.org/stable/c/72099f015d3c77bf2eb703d1aab113bd7a60915a","https://git.kernel.org/stable/c/756ca5e7ed22d9045bb4de4c981f9149278d5cd3","https://git.kernel.org/stable/c/65fc57c8b8f0b31be62be291cb1bb01755cec85d","https://git.kernel.org/stable/c/e813c95e4c8edd31599081e6356e20ada30e266d","https://git.kernel.org/stable/c/3446beddba450c8d6f9aca2f028712ac527fead3"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46009.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46009","state":"PUBLISHED","datePublished":"2026-05-27T12:56:09.581Z","dateUpdated":"2026-06-14T17:47:44.154Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.092Z"},"containers":{"cna":{"title":"PCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown\n\nepf_ntb_epc_destroy() duplicates the teardown that the caller is\nsupposed to do later. This leads to an oops when .allow_link fails or\nwhen .drop_link is performed. Remove the helper.\n\nAlso drop pci_epc_put(). EPC device refcounting is tied to configfs EPC\ngroup lifetime, and pci_epc_put() in the .drop_link path is sufficient."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8b821cf761503b80d0bd052f932adfe1bc1a0088","status":"affected","lessThan":"c3029721b84f59e790285ad27544ed5d3cb0f2a6","versionType":"git"},{"version":"8b821cf761503b80d0bd052f932adfe1bc1a0088","status":"affected","lessThan":"c72f6a7ea638f95c486a5cfd86e567b646027687","versionType":"git"},{"version":"8b821cf761503b80d0bd052f932adfe1bc1a0088","status":"affected","lessThan":"72099f015d3c77bf2eb703d1aab113bd7a60915a","versionType":"git"},{"version":"8b821cf761503b80d0bd052f932adfe1bc1a0088","status":"affected","lessThan":"756ca5e7ed22d9045bb4de4c981f9149278d5cd3","versionType":"git"},{"version":"8b821cf761503b80d0bd052f932adfe1bc1a0088","status":"affected","lessThan":"65fc57c8b8f0b31be62be291cb1bb01755cec85d","versionType":"git"},{"version":"8b821cf761503b80d0bd052f932adfe1bc1a0088","status":"affected","lessThan":"e813c95e4c8edd31599081e6356e20ada30e266d","versionType":"git"},{"version":"8b821cf761503b80d0bd052f932adfe1bc1a0088","status":"affected","lessThan":"3446beddba450c8d6f9aca2f028712ac527fead3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pci/endpoint/functions/pci-epf-ntb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.12","versionType":"semver"},{"version":"5.15.209","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/pci/endpoint/functions/pci-epf-ntb.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/c3029721b84f59e790285ad27544ed5d3cb0f2a6"},{"url":"https://git.kernel.org/stable/c/c72f6a7ea638f95c486a5cfd86e567b646027687"},{"url":"https://git.kernel.org/stable/c/72099f015d3c77bf2eb703d1aab113bd7a60915a"},{"url":"https://git.kernel.org/stable/c/756ca5e7ed22d9045bb4de4c981f9149278d5cd3"},{"url":"https://git.kernel.org/stable/c/65fc57c8b8f0b31be62be291cb1bb01755cec85d"},{"url":"https://git.kernel.org/stable/c/e813c95e4c8edd31599081e6356e20ada30e266d"},{"url":"https://git.kernel.org/stable/c/3446beddba450c8d6f9aca2f028712ac527fead3"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-14T17:47:44.154Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.6.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.12.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.18.27"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"7.0.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}