CVE-2026-72070 (GCVE-0-2026-72070)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:52 – Updated: 2026-08-23 12:46
VLAI
Title
wifi: libertas_tf: fix use-after-free in lbtf_free_adapter()
Summary
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 06b16ae5319251c26377afcb401e46056d5673f4 , < bd75636681588c67006279abdb9a76a708b3ce29 (git)
Affected: 06b16ae5319251c26377afcb401e46056d5673f4 , < 2fba1d3b2f031a2c68e566a6d45cc5b7a8d6683d (git)
Affected: 06b16ae5319251c26377afcb401e46056d5673f4 , < 9392fd5de555272449d3d8c63410ea00f8ec853a (git)
Affected: 06b16ae5319251c26377afcb401e46056d5673f4 , < 4714e95f5d61cb9c5c7c6c4e68b618f37bc6ffcf (git)
Affected: 06b16ae5319251c26377afcb401e46056d5673f4 , < 066b59e84f90d270cc15f0370166155aca507630 (git)
Affected: 06b16ae5319251c26377afcb401e46056d5673f4 , < fcff712d0e3d183843ec3916470ee6cc3455baad (git)
Affected: 06b16ae5319251c26377afcb401e46056d5673f4 , < bcf7968cb97ce4312588042cf2712f04caff6d8f (git)
Affected: 06b16ae5319251c26377afcb401e46056d5673f4 , < aa6dcd5c8dd9ba1d7d0f60093bcda41c0d6d438d (git)
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Linux Linux Affected: 2.6.28
Unaffected: 0 , < 2.6.28 (semver)
Unaffected: 5.10.266 , ≤ 5.10.* (semver)
Unaffected: 5.15.217 , ≤ 5.15.* (semver)
Unaffected: 6.1.184 , ≤ 6.1.* (semver)
Unaffected: 6.6.148 , ≤ 6.6.* (semver)
Unaffected: 6.12.101 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: libertas_tf: fix use-after-free in lbtf_free_adapter()\n\nlbtf_free_adapter() calls timer_delete(\u0026priv-\u003ecommand_timer), which does\nnot wait for a running command_timer_fn() callback. lbtf_free_adapter()\nruns on the teardown path right before ieee80211_free_hw() frees priv,\nboth in lbtf_remove_card() and in the probe error path. command_timer is\narmed by mod_timer() in lbtf_cmd() whenever a firmware command is sent.\ncommand_timer_fn() dereferences priv. If a command times out as the\ndevice is removed, command_timer_fn() runs concurrently with teardown and\ndereferences priv after it has been freed.\n\nThis is the same use-after-free that commit 03cc8f90d053 (\"wifi: libertas:\nfix use-after-free in lbs_free_adapter()\") fixed in the sibling libertas\ndriver. The libertas_tf variant has the identical pattern and was left\nunchanged. Use timer_delete_sync() so any in-flight callback completes\nbefore priv is freed."
        }
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      "providerMetadata": {
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "dateReserved": "2026-08-09T03:40:39.904Z",
    "dateUpdated": "2026-08-23T12:46:42.921Z",
    "state": "PUBLISHED"
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If a command times out as the\\ndevice is removed, command_timer_fn() runs concurrently with teardown and\\ndereferences priv after it has been freed.\\n\\nThis is the same use-after-free that commit 03cc8f90d053 (\\\"wifi: libertas:\\nfix use-after-free in lbs_free_adapter()\\\") fixed in the sibling libertas\\ndriver. The libertas_tf variant has the identical pattern and was left\\nunchanged. Use timer_delete_sync() so any in-flight callback completes\\nbefore priv is freed.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/wireless/marvell/libertas_tf/main.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"06b16ae5319251c26377afcb401e46056d5673f4\",\"lessThan\":\"bd75636681588c67006279abdb9a76a708b3ce29\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"06b16ae5319251c26377afcb401e46056d5673f4\",\"lessThan\":\"2fba1d3b2f031a2c68e566a6d45cc5b7a8d6683d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"06b16ae5319251c26377afcb401e46056d5673f4\",\"lessThan\":\"9392fd5de555272449d3d8c63410ea00f8ec853a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"06b16ae5319251c26377afcb401e46056d5673f4\",\"lessThan\":\"4714e95f5d61cb9c5c7c6c4e68b618f37bc6ffcf\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"06b16ae5319251c26377afcb401e46056d5673f4\",\"lessThan\":\"066b59e84f90d270cc15f0370166155aca507630\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"06b16ae5319251c26377afcb401e46056d5673f4\",\"lessThan\":\"fcff712d0e3d183843ec3916470ee6cc3455baad\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"06b16ae5319251c26377afcb401e46056d5673f4\",\"lessThan\":\"bcf7968cb97ce4312588042cf2712f04caff6d8f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"06b16ae5319251c26377afcb401e46056d5673f4\",\"lessThan\":\"aa6dcd5c8dd9ba1d7d0f60093bcda41c0d6d438d\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/wireless/marvell/libertas_tf/main.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.28\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.28\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.266\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.217\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.184\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.148\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.101\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.40\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.5\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/066b59e84f90d270cc15f0370166155aca507630\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2fba1d3b2f031a2c68e566a6d45cc5b7a8d6683d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4714e95f5d61cb9c5c7c6c4e68b618f37bc6ffcf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9392fd5de555272449d3d8c63410ea00f8ec853a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/aa6dcd5c8dd9ba1d7d0f60093bcda41c0d6d438d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bcf7968cb97ce4312588042cf2712f04caff6d8f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bd75636681588c67006279abdb9a76a708b3ce29\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fcff712d0e3d183843ec3916470ee6cc3455baad\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-18T11:22:34+00:00",
      "cve": "CVE-2026-72070",
      "id": "CVE-2026-72070",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wifi: libertas_tf: fix use-after-free in lbtf_free_adapter()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72070.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.