CVE-2026-72070
wifi: libertas_tf: fix use-after-free in lbtf_free_adapter()
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Linux Linux |
≥ 06b16ae5319251c26377afcb401e46056d5673f4; < bd75636681588c67006279abdb9a76a708b3ce29 (affected, git) ≥ 06b16ae5319251c26377afcb401e46056d5673f4; < 2fba1d3b2f031a2c68e566a6d45cc5b7a8d6683d (affected, git) ≥ 06b16ae5319251c26377afcb401e46056d5673f4; < 9392fd5de555272449d3d8c63410ea00f8ec853a (affected, git) ≥ 06b16ae5319251c26377afcb401e46056d5673f4; < 4714e95f5d61cb9c5c7c6c4e68b618f37bc6ffcf (affected, git) ≥ 06b16ae5319251c26377afcb401e46056d5673f4; < 066b59e84f90d270cc15f0370166155aca507630 (affected, git) ≥ 06b16ae5319251c26377afcb401e46056d5673f4; < fcff712d0e3d183843ec3916470ee6cc3455baad (affected, git) ≥ 06b16ae5319251c26377afcb401e46056d5673f4; < bcf7968cb97ce4312588042cf2712f04caff6d8f (affected, git) ≥ 06b16ae5319251c26377afcb401e46056d5673f4; < aa6dcd5c8dd9ba1d7d0f60093bcda41c0d6d438d (affected, git) Other versions: unaffected |
CNA: Linux |
| Linux Linux |
2.6.28 (affected) ≥ 0; < 2.6.28 (unaffected, semver) ≥ 5.10.266; ≤ 5.10.* (unaffected, semver) ≥ 5.15.217; ≤ 5.15.* (unaffected, semver) ≥ 6.1.184; ≤ 6.1.* (unaffected, semver) ≥ 6.6.148; ≤ 6.6.* (unaffected, semver) ≥ 6.12.101; ≤ 6.12.* (unaffected, semver) ≥ 6.18.40; ≤ 6.18.* (unaffected, semver) ≥ 7.1.5; ≤ 7.1.* (unaffected, semver) ≥ 7.2; ≤ * (unaffected, original_commit_for_fix) Other versions: affected |
CNA: Linux |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://git.kernel.org/stable/c/bd75636681588c67006279abdb9a76a708b3ce29CNA: Linux
- https://git.kernel.org/stable/c/2fba1d3b2f031a2c68e566a6d45cc5b7a8d6683dCNA: Linux
- https://git.kernel.org/stable/c/9392fd5de555272449d3d8c63410ea00f8ec853aCNA: Linux
- https://git.kernel.org/stable/c/4714e95f5d61cb9c5c7c6c4e68b618f37bc6ffcfCNA: Linux
- https://git.kernel.org/stable/c/066b59e84f90d270cc15f0370166155aca507630CNA: Linux
- https://git.kernel.org/stable/c/fcff712d0e3d183843ec3916470ee6cc3455baadCNA: Linux
- https://git.kernel.org/stable/c/bcf7968cb97ce4312588042cf2712f04caff6d8fCNA: Linux
- https://git.kernel.org/stable/c/aa6dcd5c8dd9ba1d7d0f60093bcda41c0d6d438dCNA: Linux
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