{"api_version":"1","generated_at":"2026-05-29T23:02:31+00:00","cve":"CVE-2026-46158","urls":{"html":"https://cve.report/CVE-2026-46158","api":"https://cve.report/api/cve/CVE-2026-46158.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46158","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46158"},"summary":{"title":"mptcp: pm: ADD_ADDR rtx: always decrease sk refcount","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: pm: ADD_ADDR rtx: always decrease sk refcount\n\nWhen an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer().\nIt should then be released in all cases at the end.\n\nSome (unlikely) checks were returning directly instead of calling\nsock_put() to decrease the refcount. Jump to a new 'exit' label to call\n__sock_put() (which will become sock_put() in the next commit) to fix\nthis potential leak.\n\nWhile at it, drop the '!msk' check which cannot happen because it is\nnever reset, and explicitly mark the remaining one as \"unlikely\".","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-28 10:16:31","updated_at":"2026-05-28 13:44:01"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/9634cb35af17019baec21ca648516ce376fa10e6","name":"https://git.kernel.org/stable/c/9634cb35af17019baec21ca648516ce376fa10e6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/25e37407442b8766ec2cf52fb4e31b5c3d3aeeae","name":"https://git.kernel.org/stable/c/25e37407442b8766ec2cf52fb4e31b5c3d3aeeae","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/acd3d3562315c99f3c0db16f0fcc5f0306638982","name":"https://git.kernel.org/stable/c/acd3d3562315c99f3c0db16f0fcc5f0306638982","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46158","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46158","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 00cfd77b9063dcdf3628a7087faba60de85a9cc8 acd3d3562315c99f3c0db16f0fcc5f0306638982 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 00cfd77b9063dcdf3628a7087faba60de85a9cc8 25e37407442b8766ec2cf52fb4e31b5c3d3aeeae git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 00cfd77b9063dcdf3628a7087faba60de85a9cc8 9634cb35af17019baec21ca648516ce376fa10e6 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 6.18.30 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":"46158","cve":"CVE-2026-46158","epss":"0.000170000","percentile":"0.043220000","score_date":"2026-05-28","updated_at":"2026-05-29 00:13:15"},"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":"acd3d3562315c99f3c0db16f0fcc5f0306638982","status":"affected","version":"00cfd77b9063dcdf3628a7087faba60de85a9cc8","versionType":"git"},{"lessThan":"25e37407442b8766ec2cf52fb4e31b5c3d3aeeae","status":"affected","version":"00cfd77b9063dcdf3628a7087faba60de85a9cc8","versionType":"git"},{"lessThan":"9634cb35af17019baec21ca648516ce376fa10e6","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":"6.18.*","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":"6.18.30","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: always decrease sk refcount\n\nWhen an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer().\nIt should then be released in all cases at the end.\n\nSome (unlikely) checks were returning directly instead of calling\nsock_put() to decrease the refcount. Jump to a new 'exit' label to call\n__sock_put() (which will become sock_put() in the next commit) to fix\nthis potential leak.\n\nWhile at it, drop the '!msk' check which cannot happen because it is\nnever reset, and explicitly mark the remaining one as \"unlikely\"."}],"providerMetadata":{"dateUpdated":"2026-05-28T09:36:13.821Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/acd3d3562315c99f3c0db16f0fcc5f0306638982"},{"url":"https://git.kernel.org/stable/c/25e37407442b8766ec2cf52fb4e31b5c3d3aeeae"},{"url":"https://git.kernel.org/stable/c/9634cb35af17019baec21ca648516ce376fa10e6"}],"title":"mptcp: pm: ADD_ADDR rtx: always decrease sk refcount","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46158","datePublished":"2026-05-28T09:36:13.821Z","dateReserved":"2026-05-13T15:03:33.102Z","dateUpdated":"2026-05-28T09:36:13.821Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-28 10:16:31","lastModifiedDate":"2026-05-28 13:44:01","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46158","Ordinal":"1","Title":"mptcp: pm: ADD_ADDR rtx: always decrease sk refcount","CVE":"CVE-2026-46158","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46158","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: pm: ADD_ADDR rtx: always decrease sk refcount\n\nWhen an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer().\nIt should then be released in all cases at the end.\n\nSome (unlikely) checks were returning directly instead of calling\nsock_put() to decrease the refcount. Jump to a new 'exit' label to call\n__sock_put() (which will become sock_put() in the next commit) to fix\nthis potential leak.\n\nWhile at it, drop the '!msk' check which cannot happen because it is\nnever reset, and explicitly mark the remaining one as \"unlikely\".","Type":"Description","Title":"mptcp: pm: ADD_ADDR rtx: always decrease sk refcount"}]}}}