{"api_version":"1","generated_at":"2026-07-23T12:13:46+00:00","cve":"CVE-2026-64092","urls":{"html":"https://cve.report/CVE-2026-64092","api":"https://cve.report/api/cve/CVE-2026-64092.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64092","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64092"},"summary":{"title":"batman-adv: tp_meter: fix tp_vars reference leak in receiver shutdown","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: tp_meter: fix tp_vars reference leak in receiver shutdown\n\nThe receiver shutdown timer handler, batadv_tp_receiver_shutdown(), is\nresponsible for releasing the tp_vars reference it holds. However, the\nexisting logic for coordinating this release with batadv_tp_stop_all() was\nflawed.\n\ntimer_shutdown_sync() guarantees the timer will not fire again after it\nreturns, but it returns non-zero only when the timer was pending at the\ntime of the call. If the timer had already expired (and\nbatadv_tp_stop_all() would unsucessfully try to  rearm itself),\nbatadv_tp_stop_all() skips its batadv_tp_vars_put(), and\nbatadv_tp_receiver_shutdown() fails to put its own reference as well.\n\nFix this by introducing a new atomic variable receiving that is set to 1\nwhen the receiver is initialized and cleared atomically with atomic_xchg()\nby whichever side claims it first. Only the side that observes the\ntransition from 1 to 0 is responsible for releasing the tp_vars timer\nreference, eliminating the uncertainty.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:50","updated_at":"2026-07-19 16:17:50"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/d078501dde9b57210f1808cdef4b59463d1f5fc8","name":"https://git.kernel.org/stable/c/d078501dde9b57210f1808cdef4b59463d1f5fc8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0b1bedf114ea93fef929b31f0d70a9eedcc601de","name":"https://git.kernel.org/stable/c/0b1bedf114ea93fef929b31f0d70a9eedcc601de","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a9f0bfd624ee8a286d6fd2bf0f796e730efb49b0","name":"https://git.kernel.org/stable/c/a9f0bfd624ee8a286d6fd2bf0f796e730efb49b0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b285bc0a97f43823a4967fb6d286de4c7f53d541","name":"https://git.kernel.org/stable/c/b285bc0a97f43823a4967fb6d286de4c7f53d541","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/77098e4bea37af51d3962efa88a5af2ea5e1ac57","name":"https://git.kernel.org/stable/c/77098e4bea37af51d3962efa88a5af2ea5e1ac57","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7715c73f33260af724d734c41b794457e9be8dbc","name":"https://git.kernel.org/stable/c/7715c73f33260af724d734c41b794457e9be8dbc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/297e1bc4a915b7cd3e65a79ed906b23fb3d7aaae","name":"https://git.kernel.org/stable/c/297e1bc4a915b7cd3e65a79ed906b23fb3d7aaae","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64092","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64092","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 268078acae72daa12b17b2b299701cb9924e469a 7715c73f33260af724d734c41b794457e9be8dbc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 58943b7ea356294749dae3e75b96c0ee292c00be 297e1bc4a915b7cd3e65a79ed906b23fb3d7aaae git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 79bc0eaeef2c5797317bf2da8e3159a74d62ec47 0b1bedf114ea93fef929b31f0d70a9eedcc601de git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 26dfeee8db81354bfdade155f27f9e16510ad196 a9f0bfd624ee8a286d6fd2bf0f796e730efb49b0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 03660dab86f93319178a24667f6998526dc4355d b285bc0a97f43823a4967fb6d286de4c7f53d541 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8634c1dbd73adb74d40533ebb7e914efb82e71fb d078501dde9b57210f1808cdef4b59463d1f5fc8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3d3cf6a7314aca4df0a6dde28ce784a2a30d0166 77098e4bea37af51d3962efa88a5af2ea5e1ac57 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5e7d0ac936354c36810e74ac3056b334ed1f4058 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.10.259 5.11 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.6.140 6.6.142 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12.90 6.12.92 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18.32 6.18.34 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7.0.9 7.0.11 semver","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64092","cve":"CVE-2026-64092","epss":"0.001800000","percentile":"0.078040000","score_date":"2026-07-20","updated_at":"2026-07-21 00:13:14"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/batman-adv/tp_meter.c","net/batman-adv/types.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"7715c73f33260af724d734c41b794457e9be8dbc","status":"affected","version":"268078acae72daa12b17b2b299701cb9924e469a","versionType":"git"},{"lessThan":"297e1bc4a915b7cd3e65a79ed906b23fb3d7aaae","status":"affected","version":"58943b7ea356294749dae3e75b96c0ee292c00be","versionType":"git"},{"lessThan":"0b1bedf114ea93fef929b31f0d70a9eedcc601de","status":"affected","version":"79bc0eaeef2c5797317bf2da8e3159a74d62ec47","versionType":"git"},{"lessThan":"a9f0bfd624ee8a286d6fd2bf0f796e730efb49b0","status":"affected","version":"26dfeee8db81354bfdade155f27f9e16510ad196","versionType":"git"},{"lessThan":"b285bc0a97f43823a4967fb6d286de4c7f53d541","status":"affected","version":"03660dab86f93319178a24667f6998526dc4355d","versionType":"git"},{"lessThan":"d078501dde9b57210f1808cdef4b59463d1f5fc8","status":"affected","version":"8634c1dbd73adb74d40533ebb7e914efb82e71fb","versionType":"git"},{"lessThan":"77098e4bea37af51d3962efa88a5af2ea5e1ac57","status":"affected","version":"3d3cf6a7314aca4df0a6dde28ce784a2a30d0166","versionType":"git"},{"status":"affected","version":"5e7d0ac936354c36810e74ac3056b334ed1f4058","versionType":"git"},{"lessThan":"5.11","status":"affected","version":"5.10.259","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/batman-adv/tp_meter.c","net/batman-adv/types.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6.6.142","status":"affected","version":"6.6.140","versionType":"semver"},{"lessThan":"6.12.92","status":"affected","version":"6.12.90","versionType":"semver"},{"lessThan":"6.18.34","status":"affected","version":"6.18.32","versionType":"semver"},{"lessThan":"7.0.11","status":"affected","version":"7.0.9","versionType":"semver"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.142","versionStartIncluding":"6.6.140","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.92","versionStartIncluding":"6.12.90","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.34","versionStartIncluding":"6.18.32","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"7.0.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.259","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: tp_meter: fix tp_vars reference leak in receiver shutdown\n\nThe receiver shutdown timer handler, batadv_tp_receiver_shutdown(), is\nresponsible for releasing the tp_vars reference it holds. However, the\nexisting logic for coordinating this release with batadv_tp_stop_all() was\nflawed.\n\ntimer_shutdown_sync() guarantees the timer will not fire again after it\nreturns, but it returns non-zero only when the timer was pending at the\ntime of the call. If the timer had already expired (and\nbatadv_tp_stop_all() would unsucessfully try to  rearm itself),\nbatadv_tp_stop_all() skips its batadv_tp_vars_put(), and\nbatadv_tp_receiver_shutdown() fails to put its own reference as well.\n\nFix this by introducing a new atomic variable receiving that is set to 1\nwhen the receiver is initialized and cleared atomically with atomic_xchg()\nby whichever side claims it first. Only the side that observes the\ntransition from 1 to 0 is responsible for releasing the tp_vars timer\nreference, eliminating the uncertainty."}],"providerMetadata":{"dateUpdated":"2026-07-19T15:40:00.603Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/7715c73f33260af724d734c41b794457e9be8dbc"},{"url":"https://git.kernel.org/stable/c/297e1bc4a915b7cd3e65a79ed906b23fb3d7aaae"},{"url":"https://git.kernel.org/stable/c/0b1bedf114ea93fef929b31f0d70a9eedcc601de"},{"url":"https://git.kernel.org/stable/c/a9f0bfd624ee8a286d6fd2bf0f796e730efb49b0"},{"url":"https://git.kernel.org/stable/c/b285bc0a97f43823a4967fb6d286de4c7f53d541"},{"url":"https://git.kernel.org/stable/c/d078501dde9b57210f1808cdef4b59463d1f5fc8"},{"url":"https://git.kernel.org/stable/c/77098e4bea37af51d3962efa88a5af2ea5e1ac57"}],"title":"batman-adv: tp_meter: fix tp_vars reference leak in receiver shutdown","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64092","datePublished":"2026-07-19T15:40:00.603Z","dateReserved":"2026-07-19T07:54:57.032Z","dateUpdated":"2026-07-19T15:40:00.603Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:17:50","lastModifiedDate":"2026-07-19 16:17:50","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64092","Ordinal":"1","Title":"batman-adv: tp_meter: fix tp_vars reference leak in receiver shu","CVE":"CVE-2026-64092","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64092","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: tp_meter: fix tp_vars reference leak in receiver shutdown\n\nThe receiver shutdown timer handler, batadv_tp_receiver_shutdown(), is\nresponsible for releasing the tp_vars reference it holds. However, the\nexisting logic for coordinating this release with batadv_tp_stop_all() was\nflawed.\n\ntimer_shutdown_sync() guarantees the timer will not fire again after it\nreturns, but it returns non-zero only when the timer was pending at the\ntime of the call. If the timer had already expired (and\nbatadv_tp_stop_all() would unsucessfully try to  rearm itself),\nbatadv_tp_stop_all() skips its batadv_tp_vars_put(), and\nbatadv_tp_receiver_shutdown() fails to put its own reference as well.\n\nFix this by introducing a new atomic variable receiving that is set to 1\nwhen the receiver is initialized and cleared atomically with atomic_xchg()\nby whichever side claims it first. Only the side that observes the\ntransition from 1 to 0 is responsible for releasing the tp_vars timer\nreference, eliminating the uncertainty.","Type":"Description","Title":"batman-adv: tp_meter: fix tp_vars reference leak in receiver shu"}]}}}