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CVE-2026-46208— batman-adv: stop tp_meter sessions during mesh teardown

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于batman-adv模块在网格拆除期间未停止tp_meter会话，可能导致释放后重用。

CVSS 7.8 · High EPSS 0.14% · P4

Possible ATT&CK Techniques 1 AI

T1562.001

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 33a3bb4a3345bb511f9c69c913da95d4693e2a4e< 5e7d0ac936354c36810e74ac3056b334ed1f4058 affected
33a3bb4a3345bb511f9c69c913da95d4693e2a4e< 268078acae72daa12b17b2b299701cb9924e469a affected
33a3bb4a3345bb511f9c69c913da95d4693e2a4e< 58943b7ea356294749dae3e75b96c0ee292c00be affected
33a3bb4a3345bb511f9c69c913da95d4693e2a4e< 79bc0eaeef2c5797317bf2da8e3159a74d62ec47 affected
33a3bb4a3345bb511f9c69c913da95d4693e2a4e< 26dfeee8db81354bfdade155f27f9e16510ad196 affected
33a3bb4a3345bb511f9c69c913da95d4693e2a4e< 03660dab86f93319178a24667f6998526dc4355d affected
33a3bb4a3345bb511f9c69c913da95d4693e2a4e< 8634c1dbd73adb74d40533ebb7e914efb82e71fb affected
33a3bb4a3345bb511f9c69c913da95d4693e2a4e< 3d3cf6a7314aca4df0a6dde28ce784a2a30d0166 affected
… +10 more rows
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I. Basic Information for CVE-2026-46208

Vulnerability Information
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Vulnerability Title
batman-adv: stop tp_meter sessions during mesh teardown
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: stop tp_meter sessions during mesh teardown TP meter sessions remain linked on bat_priv->tp_list after the netlink request has already finished. When the mesh interface is removed, batadv_mesh_free() currently tears down the mesh without first draining these sessions. A running sender thread or a late incoming tp_meter packet can then keep processing against a mesh instance which is already shutting down. Synchronize tp_meter with the mesh lifetime by stopping all active sessions from batadv_mesh_free() and waiting for sender threads to exit before teardown continues.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于batman-adv模块在网格拆除期间未停止tp_meter会话，可能导致释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 33a3bb4a3345bb511f9c69c913da95d4693e2a4e ~ 5e7d0ac936354c36810e74ac3056b334ed1f4058 -
Linux Linux 4.8 -

II. Public POCs for CVE-2026-46208

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III. Intelligence Information for CVE-2026-46208

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Patches & Fixes for CVE-2026-46208 (8)

Same Patch Batch · Linux · 2026-05-28 · 135 CVEs total

CVE-2026-46135 9.8 CRITICAL nvmet-tcp: fix race between ICReq handling and queue teardown
CVE-2026-46137 9.8 CRITICAL mptcp: pm: ADD_ADDR rtx: fix potential data-race
CVE-2026-46195 9.8 CRITICAL smb: client: validate dacloffset before building DACL pointers
CVE-2026-46115 9.8 CRITICAL block: add pgmap check to biovec_phys_mergeable
CVE-2026-46185 9.1 CRITICAL smb/client: fix out-of-bounds read in symlink_data()
CVE-2026-46155 9.1 CRITICAL smb/client: fix out-of-bounds read in smb2_compound_op()
CVE-2026-46119 9.1 CRITICAL libceph: Fix slab-out-of-bounds access in auth message processing
CVE-2026-46238 8.8 HIGH batman-adv: stop caching unowned originator pointers in BAT IV
CVE-2026-46198 8.8 HIGH batman-adv: fix integer overflow on buff_pos
CVE-2026-46125 8.8 HIGH wifi: mac80211: remove station if connection prep fails
CVE-2026-46174 8.8 HIGH x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache
CVE-2026-46166 8.8 HIGH wifi: mac80211: use safe list iteration in radar detect work
CVE-2026-46212 8.8 HIGH batman-adv: bla: prevent use-after-free when deleting claims
CVE-2026-46152 8.8 HIGH wifi: mac80211: drop stray 'static' from fast-RX rx_result
CVE-2026-46113 8.8 HIGH KVM: x86: Fix shadow paging use-after-free due to unexpected GFN
CVE-2026-46232 8.1 HIGH HID: playstation: Clamp num_touch_reports
CVE-2026-46138 8.1 HIGH Bluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt
CVE-2026-46215 7.8 HIGH drm: Set old handle to NULL before prime swap in change_handle
CVE-2026-46210 7.8 HIGH media: iris: fix use-after-free of fmt_src during MBPF check
CVE-2026-46157 7.8 HIGH ALSA: pcm: oss: Fix data race at accessing runtime.oss.trigger

Showing top 20 of 135 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46208

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