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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-72070

wifi: libertas_tf: fix use-after-free in lbtf_free_adapter()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: libertas_tf: fix use-after-free in lbtf_free_adapter() lbtf_free_adapter() calls timer_delete(&priv->command_timer), which does not wait for a running command_timer_fn() callback. lbtf_free_adapter() runs on the teardown path right before ieee80211_free_hw() frees priv, both in lbtf_remove_card() and in the probe error path. command_timer is armed by mod_timer() in lbtf_cmd() whenever a firmware command is sent. command_timer_fn() dereferences priv. If a command times out as the device is removed, command_timer_fn() runs concurrently with teardown and dereferences priv after it has been freed. This is the same use-after-free that commit 03cc8f90d053 ("wifi: libertas: fix use-after-free in lbs_free_adapter()") fixed in the sibling libertas driver. The libertas_tf variant has the identical pattern and was left unchanged. Use timer_delete_sync() so any in-flight callback completes before priv is freed.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 06b16ae5319251c26377afcb401e46056d5673f4 to < bd75636681588c67006279abdb9a76a708b3ce29affected
  • 06b16ae5319251c26377afcb401e46056d5673f4 to < 2fba1d3b2f031a2c68e566a6d45cc5b7a8d6683daffected
  • 06b16ae5319251c26377afcb401e46056d5673f4 to < 9392fd5de555272449d3d8c63410ea00f8ec853aaffected
  • 06b16ae5319251c26377afcb401e46056d5673f4 to < 4714e95f5d61cb9c5c7c6c4e68b618f37bc6ffcfaffected
  • 06b16ae5319251c26377afcb401e46056d5673f4 to < 066b59e84f90d270cc15f0370166155aca507630affected
  • 06b16ae5319251c26377afcb401e46056d5673f4 to < fcff712d0e3d183843ec3916470ee6cc3455baadaffected
  • 06b16ae5319251c26377afcb401e46056d5673f4 to < bcf7968cb97ce4312588042cf2712f04caff6d8faffected
  • 06b16ae5319251c26377afcb401e46056d5673f4 to < aa6dcd5c8dd9ba1d7d0f60093bcda41c0d6d438daffected

Linux Linux

Default version status: affected

  • 2.6.28affected
  • 0 to < 2.6.28unaffected
  • 5.10.266 to ≤ 5.10.*unaffected
  • 5.15.217 to ≤ 5.15.*unaffected
  • 6.1.184 to ≤ 6.1.*unaffected
  • 6.6.148 to ≤ 6.6.*unaffected
  • 6.12.101 to ≤ 6.12.*unaffected
  • 6.18.40 to ≤ 6.18.*unaffected
  • 7.1.5 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References