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TI-2026-45657 Aliases CVE-2026-64092GHSA-hc2g-7m28-vw77

batman-adv: tp_meter: fix tp_vars reference leak in receiver shutdown

Priority LOW 24Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.00128 2nd percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.11, 6.6.142, 6.12.92 +2

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux5.10.259 to before 5.115.11Patch availableCNA
LinuxLinux6.6.140 to before 6.6.142; 6.12.90 to before 6.12.92; 6.18.32 to before 6.18.34; 7.0.9 to before 7.0.116.6.142, 6.12.92, 6.18.34, 7.0.11Patch availableCNA
  • Linux VendorLinux Affected 5.10.259 to before 5.11 Fixed in 5.11 Patch available CNA
  • Linux VendorLinux Affected 6.6.140 to before 6.6.142; 6.12.90 to before 6.12.92; 6.18.32 to before 6.18.34; 7.0.9 to before 7.0.11 Fixed in 6.6.142, 6.12.92, 6.18.34, 7.0.11 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.10.259 to before 5.11; 6.6.140 to before 6.6.142; 6.12.90 to before 6.12.92; 6.18.32 to before 6.18.34; 7.0.9 to before 7.0.11VulnerableLinux
cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*7.1 rc4VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.10.259 to before 5.11; 6.6.140 to before 6.6.142; 6.12.90 to before 6.12.92; 6.18.32 to before 6.18.34; 7.0.9 to before 7.0.11 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* Versions 7.1 rc4 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.11
  • Fix · CNA Linux (Linux) Fixed in 6.6.142, 6.12.92, 6.18.34, 7.0.11

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Not affected: 5 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-64092
  2. 2026-10-03 Alias added: GHSA-hc2g-7m28-vw77
  3. 2026-10-20 Affected versions changed · Red Hat

References

Patch 7

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences