CVE-2026-64092batman-adv: tp_meter: fix tp_vars reference leak in receiver shutdown
- 5.5MediumCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: tp_meter: fix tp_vars reference leak in receiver shutdown The receiver shutdown timer handler, batadv_tp_receiver_shutdown(), is responsible for releasing the tp_vars reference it holds. However, the existing logic for coordinating this release with batadv_tp_stop_all() was flawed. timer_shutdown_sync() guarantees the timer will not fire again after it returns, but it returns non-zero only when the timer was pending at the time of the call. If the timer had already expired (and batadv_tp_stop_all() would unsucessfully try to rearm itself), batadv_tp_stop_all() skips its batadv_tp_vars_put(), and batadv_tp_receiver_shutdown() fails to put its own reference as well. Fix this by introducing a new atomic variable receiving that is set to 1 when the receiver is initialized and cleared atomically with atomic_xchg() by whichever side claims it first. Only the side that observes the transition from 1 to 0 is responsible for releasing the tp_vars timer reference, eliminating the uncertainty.
Timeline
ID reserved
By Linux
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 98% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 268078acae72daa12b17b2b299701cb9924e469a – < 7715c73f33260af724d734c41b794457e9be8dbc
- affected 58943b7ea356294749dae3e75b96c0ee292c00be – < 297e1bc4a915b7cd3e65a79ed906b23fb3d7aaae
- affected 79bc0eaeef2c5797317bf2da8e3159a74d62ec47 – < 0b1bedf114ea93fef929b31f0d70a9eedcc601de
- affected 26dfeee8db81354bfdade155f27f9e16510ad196 – < a9f0bfd624ee8a286d6fd2bf0f796e730efb49b0
- affected 03660dab86f93319178a24667f6998526dc4355d – < b285bc0a97f43823a4967fb6d286de4c7f53d541
- affected 8634c1dbd73adb74d40533ebb7e914efb82e71fb – < d078501dde9b57210f1808cdef4b59463d1f5fc8
- affected 3d3cf6a7314aca4df0a6dde28ce784a2a30d0166 – < 77098e4bea37af51d3962efa88a5af2ea5e1ac57
- affected 5e7d0ac936354c36810e74ac3056b334ed1f4058
- affected 5.10.259 – < 5.11
- affected 6.6.140 – < 6.6.142
- affected 6.12.90 – < 6.12.92
- affected 6.18.32 – < 6.18.34
- affected 7.0.9 – < 7.0.11
References
References7
- https://git.kernel.org/stable/c/7715c73f33260af724d734c41b794457e9be8dbc (opens in a new tab)
- https://git.kernel.org/stable/c/297e1bc4a915b7cd3e65a79ed906b23fb3d7aaae (opens in a new tab)
- https://git.kernel.org/stable/c/0b1bedf114ea93fef929b31f0d70a9eedcc601de (opens in a new tab)
- https://git.kernel.org/stable/c/a9f0bfd624ee8a286d6fd2bf0f796e730efb49b0 (opens in a new tab)
- https://git.kernel.org/stable/c/b285bc0a97f43823a4967fb6d286de4c7f53d541 (opens in a new tab)
- https://git.kernel.org/stable/c/d078501dde9b57210f1808cdef4b59463d1f5fc8 (opens in a new tab)
- https://git.kernel.org/stable/c/77098e4bea37af51d3962efa88a5af2ea5e1ac57 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-45777 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-64092)Record last updated .