{"api_version":"1","generated_at":"2026-06-04T17:28:45+00:00","cve":"CVE-2026-46170","urls":{"html":"https://cve.report/CVE-2026-46170","api":"https://cve.report/api/cve/CVE-2026-46170.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46170","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46170"},"summary":{"title":"mptcp: pm: ADD_ADDR rtx: free sk if last","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: pm: ADD_ADDR rtx: free sk if last\n\nWhen an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer(),\nand released at the end.\n\nIf at that moment, it was the last reference being held, the sk would\nnot be freed. sock_put() should then be called instead of __sock_put().\n\nBut that's not enough: if it is the last reference, sock_put() will call\nsk_free(), which will end up calling sk_stop_timer_sync() on the same\ntimer, and waiting indefinitely to finish. So it is needed to mark that\nthe timer is done at the end of the timer handler when it has not been\nrescheduled, not to call sk_stop_timer_sync() on \"itself\".","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-28 10:16:32","updated_at":"2026-06-01 17:17:30"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/6a3af482188f6db4186d1605f64d911d7330abb3","name":"https://git.kernel.org/stable/c/6a3af482188f6db4186d1605f64d911d7330abb3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/531c537b8fb620beabccfb1594e8d43cbebbb87a","name":"https://git.kernel.org/stable/c/531c537b8fb620beabccfb1594e8d43cbebbb87a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8143a224785ceaf2b0856e08d4498916f38228fb","name":"https://git.kernel.org/stable/c/8143a224785ceaf2b0856e08d4498916f38228fb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b7b9a461569734d33d3259d58d2507adfac107ed","name":"https://git.kernel.org/stable/c/b7b9a461569734d33d3259d58d2507adfac107ed","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b74ad20198652b6b39a761c277ba65ae82b1e107","name":"https://git.kernel.org/stable/c/b74ad20198652b6b39a761c277ba65ae82b1e107","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46170","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46170","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 00cfd77b9063dcdf3628a7087faba60de85a9cc8 6a3af482188f6db4186d1605f64d911d7330abb3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 00cfd77b9063dcdf3628a7087faba60de85a9cc8 531c537b8fb620beabccfb1594e8d43cbebbb87a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 00cfd77b9063dcdf3628a7087faba60de85a9cc8 b74ad20198652b6b39a761c277ba65ae82b1e107 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 00cfd77b9063dcdf3628a7087faba60de85a9cc8 8143a224785ceaf2b0856e08d4498916f38228fb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 00cfd77b9063dcdf3628a7087faba60de85a9cc8 b7b9a461569734d33d3259d58d2507adfac107ed git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.10","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.142 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.92 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.30 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.7 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"46170","cve":"CVE-2026-46170","epss":"0.000240000","percentile":"0.069080000","score_date":"2026-06-03","updated_at":"2026-06-04 00:06:35"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/mptcp/pm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6a3af482188f6db4186d1605f64d911d7330abb3","status":"affected","version":"00cfd77b9063dcdf3628a7087faba60de85a9cc8","versionType":"git"},{"lessThan":"531c537b8fb620beabccfb1594e8d43cbebbb87a","status":"affected","version":"00cfd77b9063dcdf3628a7087faba60de85a9cc8","versionType":"git"},{"lessThan":"b74ad20198652b6b39a761c277ba65ae82b1e107","status":"affected","version":"00cfd77b9063dcdf3628a7087faba60de85a9cc8","versionType":"git"},{"lessThan":"8143a224785ceaf2b0856e08d4498916f38228fb","status":"affected","version":"00cfd77b9063dcdf3628a7087faba60de85a9cc8","versionType":"git"},{"lessThan":"b7b9a461569734d33d3259d58d2507adfac107ed","status":"affected","version":"00cfd77b9063dcdf3628a7087faba60de85a9cc8","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/mptcp/pm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.10"},{"lessThan":"5.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.142","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.92","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.30","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1-rc3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.142","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.92","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.30","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.7","versionStartIncluding":"5.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc3","versionStartIncluding":"5.10","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: pm: ADD_ADDR rtx: free sk if last\n\nWhen an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer(),\nand released at the end.\n\nIf at that moment, it was the last reference being held, the sk would\nnot be freed. sock_put() should then be called instead of __sock_put().\n\nBut that's not enough: if it is the last reference, sock_put() will call\nsk_free(), which will end up calling sk_stop_timer_sync() on the same\ntimer, and waiting indefinitely to finish. So it is needed to mark that\nthe timer is done at the end of the timer handler when it has not been\nrescheduled, not to call sk_stop_timer_sync() on \"itself\"."}],"providerMetadata":{"dateUpdated":"2026-06-01T16:19:29.401Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/6a3af482188f6db4186d1605f64d911d7330abb3"},{"url":"https://git.kernel.org/stable/c/531c537b8fb620beabccfb1594e8d43cbebbb87a"},{"url":"https://git.kernel.org/stable/c/b74ad20198652b6b39a761c277ba65ae82b1e107"},{"url":"https://git.kernel.org/stable/c/8143a224785ceaf2b0856e08d4498916f38228fb"},{"url":"https://git.kernel.org/stable/c/b7b9a461569734d33d3259d58d2507adfac107ed"}],"title":"mptcp: pm: ADD_ADDR rtx: free sk if last","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46170","datePublished":"2026-05-28T09:36:25.184Z","dateReserved":"2026-05-13T15:03:33.103Z","dateUpdated":"2026-06-01T16:19:29.401Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-28 10:16:32","lastModifiedDate":"2026-06-01 17:17:30","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46170","Ordinal":"1","Title":"mptcp: pm: ADD_ADDR rtx: free sk if last","CVE":"CVE-2026-46170","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46170","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: pm: ADD_ADDR rtx: free sk if last\n\nWhen an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer(),\nand released at the end.\n\nIf at that moment, it was the last reference being held, the sk would\nnot be freed. sock_put() should then be called instead of __sock_put().\n\nBut that's not enough: if it is the last reference, sock_put() will call\nsk_free(), which will end up calling sk_stop_timer_sync() on the same\ntimer, and waiting indefinitely to finish. So it is needed to mark that\nthe timer is done at the end of the timer handler when it has not been\nrescheduled, not to call sk_stop_timer_sync() on \"itself\".","Type":"Description","Title":"mptcp: pm: ADD_ADDR rtx: free sk if last"}]}}}