{"api_version":"1","generated_at":"2026-08-24T04:46:00+00:00","cve":"CVE-2026-68122","urls":{"html":"https://cve.report/CVE-2026-68122","api":"https://cve.report/api/cve/CVE-2026-68122.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-68122","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-68122"},"summary":{"title":"ovpn: fix peer refcount leak in TCP error paths","description":"In the Linux kernel, the following vulnerability has been resolved:\n\novpn: fix peer refcount leak in TCP error paths\n\nWhen either the TCP RX or TX error path calls ovpn_peer_hold() followed\nby schedule_work(&peer->tcp.defer_del_work), and the work item is already\npending from the other path, schedule_work() returns false and the work\nruns only once. Since ovpn_tcp_peer_del_work() calls ovpn_peer_put()\nexactly once, the extra reference taken by the losing path is never\ndropped, leaking the peer object.\n\nThe race window:\n\n  CPU0 (strparser/RX error):       CPU1 (tcp_tx_work/TX error):\n  ovpn_peer_hold()   <- refcnt+1   ovpn_peer_hold()   <- refcnt+2\n  schedule_work()    <- queued      schedule_work()    <- NO-OP\n                                    (work already pending)\n  ovpn_tcp_peer_del_work runs:\n    ovpn_peer_del()\n    ovpn_peer_put()  <- refcnt+1\n                                   <- peer never freed\n\nFix by checking the return value of schedule_work() in both paths and\ncalling ovpn_peer_put() to drop the extra reference if the work was\nalready pending. ovpn_peer_hold() is kept unconditional in the TX path\nas it cannot fail at that point.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-10 13:19:57","updated_at":"2026-08-17 05:18:11"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/b08526bf0bbf84ceebd29033783e8e0c9f451286","name":"https://git.kernel.org/stable/c/b08526bf0bbf84ceebd29033783e8e0c9f451286","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/63bbe18fc03062f483c627838a566a707b62da79","name":"https://git.kernel.org/stable/c/63bbe18fc03062f483c627838a566a707b62da79","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f08f39c1f43f3980d46b06af8ed99ffe84ac294a","name":"https://git.kernel.org/stable/c/f08f39c1f43f3980d46b06af8ed99ffe84ac294a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-68122","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68122","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a6a5e87b3ee4cbf9c69a776565378c9b6a91dbfb b08526bf0bbf84ceebd29033783e8e0c9f451286 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a6a5e87b3ee4cbf9c69a776565378c9b6a91dbfb f08f39c1f43f3980d46b06af8ed99ffe84ac294a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a6a5e87b3ee4cbf9c69a776565378c9b6a91dbfb 63bbe18fc03062f483c627838a566a707b62da79 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.16","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.42 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.6 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"68122","cve":"CVE-2026-68122","epss":"0.001730000","percentile":"0.070540000","score_date":"2026-08-17","updated_at":"2026-08-18 00:11:47"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ovpn/tcp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"b08526bf0bbf84ceebd29033783e8e0c9f451286","status":"affected","version":"a6a5e87b3ee4cbf9c69a776565378c9b6a91dbfb","versionType":"git"},{"lessThan":"f08f39c1f43f3980d46b06af8ed99ffe84ac294a","status":"affected","version":"a6a5e87b3ee4cbf9c69a776565378c9b6a91dbfb","versionType":"git"},{"lessThan":"63bbe18fc03062f483c627838a566a707b62da79","status":"affected","version":"a6a5e87b3ee4cbf9c69a776565378c9b6a91dbfb","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ovpn/tcp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.16"},{"lessThan":"6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.42","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.42","versionStartIncluding":"6.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.6","versionStartIncluding":"6.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.16","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\novpn: fix peer refcount leak in TCP error paths\n\nWhen either the TCP RX or TX error path calls ovpn_peer_hold() followed\nby schedule_work(&peer->tcp.defer_del_work), and the work item is already\npending from the other path, schedule_work() returns false and the work\nruns only once. Since ovpn_tcp_peer_del_work() calls ovpn_peer_put()\nexactly once, the extra reference taken by the losing path is never\ndropped, leaking the peer object.\n\nThe race window:\n\n  CPU0 (strparser/RX error):       CPU1 (tcp_tx_work/TX error):\n  ovpn_peer_hold()   <- refcnt+1   ovpn_peer_hold()   <- refcnt+2\n  schedule_work()    <- queued      schedule_work()    <- NO-OP\n                                    (work already pending)\n  ovpn_tcp_peer_del_work runs:\n    ovpn_peer_del()\n    ovpn_peer_put()  <- refcnt+1\n                                   <- peer never freed\n\nFix by checking the return value of schedule_work() in both paths and\ncalling ovpn_peer_put() to drop the extra reference if the work was\nalready pending. ovpn_peer_hold() is kept unconditional in the TX path\nas it cannot fail at that point."}],"providerMetadata":{"dateUpdated":"2026-08-17T04:59:13.088Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/b08526bf0bbf84ceebd29033783e8e0c9f451286"},{"url":"https://git.kernel.org/stable/c/f08f39c1f43f3980d46b06af8ed99ffe84ac294a"},{"url":"https://git.kernel.org/stable/c/63bbe18fc03062f483c627838a566a707b62da79"}],"title":"ovpn: fix peer refcount leak in TCP error paths","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-68122","datePublished":"2026-08-10T11:58:42.477Z","dateReserved":"2026-07-30T09:28:09.369Z","dateUpdated":"2026-08-17T04:59:13.088Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-10 13:19:57","lastModifiedDate":"2026-08-17 05:18:11","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"68122","Ordinal":"1","Title":"ovpn: fix peer refcount leak in TCP error paths","CVE":"CVE-2026-68122","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"68122","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\novpn: fix peer refcount leak in TCP error paths\n\nWhen either the TCP RX or TX error path calls ovpn_peer_hold() followed\nby schedule_work(&peer->tcp.defer_del_work), and the work item is already\npending from the other path, schedule_work() returns false and the work\nruns only once. Since ovpn_tcp_peer_del_work() calls ovpn_peer_put()\nexactly once, the extra reference taken by the losing path is never\ndropped, leaking the peer object.\n\nThe race window:\n\n  CPU0 (strparser/RX error):       CPU1 (tcp_tx_work/TX error):\n  ovpn_peer_hold()   <- refcnt+1   ovpn_peer_hold()   <- refcnt+2\n  schedule_work()    <- queued      schedule_work()    <- NO-OP\n                                    (work already pending)\n  ovpn_tcp_peer_del_work runs:\n    ovpn_peer_del()\n    ovpn_peer_put()  <- refcnt+1\n                                   <- peer never freed\n\nFix by checking the return value of schedule_work() in both paths and\ncalling ovpn_peer_put() to drop the extra reference if the work was\nalready pending. ovpn_peer_hold() is kept unconditional in the TX path\nas it cannot fail at that point.","Type":"Description","Title":"ovpn: fix peer refcount leak in TCP error paths"}]}}}