{"cve":"CVE-2026-64092","nvd":{"published":"2026-07-19T16:17:50.110","modified":"2026-08-11T15:56:10.913","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/0b1bedf114ea93fef929b31f0d70a9eedcc601de","https://git.kernel.org/stable/c/297e1bc4a915b7cd3e65a79ed906b23fb3d7aaae","https://git.kernel.org/stable/c/77098e4bea37af51d3962efa88a5af2ea5e1ac57","https://git.kernel.org/stable/c/7715c73f33260af724d734c41b794457e9be8dbc","https://git.kernel.org/stable/c/a9f0bfd624ee8a286d6fd2bf0f796e730efb49b0"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:45:36.895656543+00:00"},"epss":{"cve":"CVE-2026-64092","score":0.00128,"percentile":0.0243,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}