{"id":"CVE-2026-80990","state":"PUBLISHED","title":"net: thunderbolt: Release the Rx HopID that was handed out on mismatch","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: thunderbolt: Release the Rx HopID that was handed out on mismatch\n\ntb_xdomain_alloc_in_hopid() passes the wanted HopID to ida_alloc_range()\nas the lower bound, so a taken id is not an error there: the allocator\nreturns the next free one above it. tbnet_connected_work() asks for the\npeer's transmit path, treats any other id as a failure and returns\nwithout releasing what it got, so that allocation stays live for the rest\nof the XDomain connection with nothing left holding a reference to it.\n\nRelease the id when it is not the one we asked for, the same way the\nerror unwind at the end of the function releases the expected one.","publishedAt":"2026-09-11T19:42:47.534Z","updatedAt":"2026-10-30T12:31:36.465Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"180b0689425c6fb2b35e69a3316ee38371a782df","status":"affected","lessThan":"b098f01638a142afbb1e00b323e2fc40f237907a","versionType":"git"},{"version":"180b0689425c6fb2b35e69a3316ee38371a782df","status":"affected","lessThan":"47981eb66461ba4e74bbaea0f139adaaeb3991e9","versionType":"git"},{"version":"180b0689425c6fb2b35e69a3316ee38371a782df","status":"affected","lessThan":"9eac1817bfc5fa76e3a2d1b8fd824cc6ef5a9ab0","versionType":"git"},{"version":"180b0689425c6fb2b35e69a3316ee38371a782df","status":"affected","lessThan":"61ff3c353e5d2ff4eb9d0b6d8d9e47805b136eea","versionType":"git"},{"version":"180b0689425c6fb2b35e69a3316ee38371a782df","status":"affected","lessThan":"1c361f6cf39be7cc0ce37c0b67bd1cdf74b0a0c1","versionType":"git"},{"version":"180b0689425c6fb2b35e69a3316ee38371a782df","status":"affected","lessThan":"2f1463554d0561a2fead81e3888604e5c1125e29","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/thunderbolt/main.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/thunderbolt/main.c"]}],"references":["https://git.kernel.org/stable/c/b098f01638a142afbb1e00b323e2fc40f237907a","https://git.kernel.org/stable/c/47981eb66461ba4e74bbaea0f139adaaeb3991e9","https://git.kernel.org/stable/c/9eac1817bfc5fa76e3a2d1b8fd824cc6ef5a9ab0","https://git.kernel.org/stable/c/61ff3c353e5d2ff4eb9d0b6d8d9e47805b136eea","https://git.kernel.org/stable/c/1c361f6cf39be7cc0ce37c0b67bd1cdf74b0a0c1","https://git.kernel.org/stable/c/2f1463554d0561a2fead81e3888604e5c1125e29"],"weaknesses":[],"ingestedAt":"2026-10-30T12:50:04.827Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80990.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80990","state":"PUBLISHED","datePublished":"2026-09-11T19:42:47.534Z","dateUpdated":"2026-10-30T12:31:36.465Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.811Z"},"containers":{"cna":{"title":"net: thunderbolt: Release the Rx HopID that was handed out on mismatch","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: thunderbolt: Release the Rx HopID that was handed out on mismatch\n\ntb_xdomain_alloc_in_hopid() passes the wanted HopID to ida_alloc_range()\nas the lower bound, so a taken id is not an error there: the allocator\nreturns the next free one above it. tbnet_connected_work() asks for the\npeer's transmit path, treats any other id as a failure and returns\nwithout releasing what it got, so that allocation stays live for the rest\nof the XDomain connection with nothing left holding a reference to it.\n\nRelease the id when it is not the one we asked for, the same way the\nerror unwind at the end of the function releases the expected one."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"180b0689425c6fb2b35e69a3316ee38371a782df","status":"affected","lessThan":"b098f01638a142afbb1e00b323e2fc40f237907a","versionType":"git"},{"version":"180b0689425c6fb2b35e69a3316ee38371a782df","status":"affected","lessThan":"47981eb66461ba4e74bbaea0f139adaaeb3991e9","versionType":"git"},{"version":"180b0689425c6fb2b35e69a3316ee38371a782df","status":"affected","lessThan":"9eac1817bfc5fa76e3a2d1b8fd824cc6ef5a9ab0","versionType":"git"},{"version":"180b0689425c6fb2b35e69a3316ee38371a782df","status":"affected","lessThan":"61ff3c353e5d2ff4eb9d0b6d8d9e47805b136eea","versionType":"git"},{"version":"180b0689425c6fb2b35e69a3316ee38371a782df","status":"affected","lessThan":"1c361f6cf39be7cc0ce37c0b67bd1cdf74b0a0c1","versionType":"git"},{"version":"180b0689425c6fb2b35e69a3316ee38371a782df","status":"affected","lessThan":"2f1463554d0561a2fead81e3888604e5c1125e29","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/thunderbolt/main.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/thunderbolt/main.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/b098f01638a142afbb1e00b323e2fc40f237907a"},{"url":"https://git.kernel.org/stable/c/47981eb66461ba4e74bbaea0f139adaaeb3991e9"},{"url":"https://git.kernel.org/stable/c/9eac1817bfc5fa76e3a2d1b8fd824cc6ef5a9ab0"},{"url":"https://git.kernel.org/stable/c/61ff3c353e5d2ff4eb9d0b6d8d9e47805b136eea"},{"url":"https://git.kernel.org/stable/c/1c361f6cf39be7cc0ce37c0b67bd1cdf74b0a0c1"},{"url":"https://git.kernel.org/stable/c/2f1463554d0561a2fead81e3888604e5c1125e29"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:31:36.465Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.12.109"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}