CVE-2026-46307 (GCVE-0-2026-46307)

Vulnerability from cvelistv5 – Published: 2026-06-08 15:46 – Updated: 2026-06-08 15:46
VLAI
Title
wifi: ath5k: do not access array OOB
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: ath5k: do not access array OOB Vincent reports: > The ath5k driver seems to do an array-index-out-of-bounds access as > shown by the UBSAN kernel message: > UBSAN: array-index-out-of-bounds in drivers/net/wireless/ath/ath5k/base.c:1741:20 > index 4 is out of range for type 'ieee80211_tx_rate [4]' > ... > Call Trace: > <TASK> > dump_stack_lvl+0x5d/0x80 > ubsan_epilogue+0x5/0x2b > __ubsan_handle_out_of_bounds.cold+0x46/0x4b > ath5k_tasklet_tx+0x4e0/0x560 [ath5k] > tasklet_action_common+0xb5/0x1c0 It is real. 'ts->ts_final_idx' can be 3 on 5212, so: info->status.rates[ts->ts_final_idx + 1].idx = -1; with the array defined as: struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES]; while the size is: #define IEEE80211_TX_MAX_RATES 4 is indeed bogus. Set this 'idx = -1' sentinel only if the array index is less than the array size. As mac80211 will not look at rates beyond the size (IEEE80211_TX_MAX_RATES). Note: The effect of the OOB write is negligible. It just overwrites the next member of info->status, i.e. ack_signal.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 6d7b97b23e114c8fbb825e6721164d228c1af3fc , < ecb1c163166759dec004c1fdb9709b8a5992fc8e (git)
Affected: 6d7b97b23e114c8fbb825e6721164d228c1af3fc , < 9dd6aae4bc7bfa11088d928670a3315eae542769 (git)
Affected: 6d7b97b23e114c8fbb825e6721164d228c1af3fc , < 744c19e266b0d2628c5951439195dcef27eadacf (git)
Affected: 6d7b97b23e114c8fbb825e6721164d228c1af3fc , < 83226c71af53fb9b3cad40cb9a9a79f36d68c020 (git)
Affected: 6d7b97b23e114c8fbb825e6721164d228c1af3fc , < d6869537013b1f21b292342752d97868b79b5934 (git)
Affected: 6d7b97b23e114c8fbb825e6721164d228c1af3fc , < e9f1081bc775146156def0dbc821b92f35d56afb (git)
Affected: 6d7b97b23e114c8fbb825e6721164d228c1af3fc , < 568173ad9bd0b46cc6cd937dea8791e9b5eefa57 (git)
Affected: 6d7b97b23e114c8fbb825e6721164d228c1af3fc , < d748603f12baff112caa3ab7d39f50100f010dbd (git)
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Linux Linux Affected: 3.0
Unaffected: 0 , < 3.0 (semver)
Unaffected: 5.10.258 , ≤ 5.10.* (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.140 , ≤ 6.6.* (semver)
Unaffected: 6.12.88 , ≤ 6.12.* (semver)
Unaffected: 6.18.30 , ≤ 6.18.* (semver)
Unaffected: 7.0.7 , ≤ 7.0.* (semver)
Unaffected: 7.1-rc3 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/ath/ath5k/base.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath5k: do not access array OOB\n\nVincent reports:\n\u003e The ath5k driver seems to do an array-index-out-of-bounds access as\n\u003e shown by the UBSAN kernel message:\n\u003e UBSAN: array-index-out-of-bounds in drivers/net/wireless/ath/ath5k/base.c:1741:20\n\u003e index 4 is out of range for type \u0027ieee80211_tx_rate [4]\u0027\n\u003e ...\n\u003e Call Trace:\n\u003e  \u003cTASK\u003e\n\u003e  dump_stack_lvl+0x5d/0x80\n\u003e  ubsan_epilogue+0x5/0x2b\n\u003e  __ubsan_handle_out_of_bounds.cold+0x46/0x4b\n\u003e  ath5k_tasklet_tx+0x4e0/0x560 [ath5k]\n\u003e  tasklet_action_common+0xb5/0x1c0\n\nIt is real. \u0027ts-\u003ets_final_idx\u0027 can be 3 on 5212, so:\n   info-\u003estatus.rates[ts-\u003ets_final_idx + 1].idx = -1;\nwith the array defined as:\n   struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES];\nwhile the size is:\n   #define IEEE80211_TX_MAX_RATES  4\nis indeed bogus.\n\nSet this \u0027idx = -1\u0027 sentinel only if the array index is less than the\narray size. As mac80211 will not look at rates beyond the size\n(IEEE80211_TX_MAX_RATES).\n\nNote: The effect of the OOB write is negligible. It just overwrites the\nnext member of info-\u003estatus, i.e. ack_signal."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-06-08T15:46:35.059Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/d748603f12baff112caa3ab7d39f50100f010dbd"
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    "dateReserved": "2026-05-13T15:03:33.111Z",
    "dateUpdated": "2026-06-08T15:46:35.059Z",
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  }
}


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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.