CVE-2026-46307wifi: ath5k: do not access array OOB
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.3 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 6d7b97b23e114c8fbb825e6721164d228c1af3fc before ecb1c163166759dec004c1fdb9709b8a5992fc8e; from 6d7b97b23e114c8fbb825e6721164d228c1af3fc before 9dd6aae4bc7bfa11088d928670a3315eae542769; from 6d7b97b23e114c8fbb825e6721164d228c1af3fc before 744c19e266b0d2628c5951439195dcef27eadacf; from 6d7b97b23e114c8fbb825e6721164d228c1af3fc before 83226c71af53fb9b3cad40cb9a9a79f36d68c020; from 6d7b97b23e114c8fbb825e6721164d228c1af3fc before d6869537013b1f21b292342752d97868b79b5934; from 6d7b97b23e114c8fbb825e6721164d228c1af3fc before e9f1081bc775146156def0dbc821b92f35d56afb; from 6d7b97b23e114c8fbb825e6721164d228c1af3fc before 568173ad9bd0b46cc6cd937dea8791e9b5eefa57; from 6d7b97b23e114c8fbb825e6721164d228c1af3fc before d748603f12baff112caa3ab7d39f50100f010dbd | CNA record |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | all versions | CISA ADP |
linux linux_kernel linux:linux_kernel | from 3.0 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.88; from 6.13 before 6.18.30; from 6.19 before 7.0.7; 7.1; and 1 more ranges | NVD |
References
- https://git.kernel.org/stable/c/ecb1c163166759dec004c1fdb9709b8a5992fc8epatch
- https://git.kernel.org/stable/c/9dd6aae4bc7bfa11088d928670a3315eae542769patch
- https://git.kernel.org/stable/c/744c19e266b0d2628c5951439195dcef27eadacfpatch
- https://git.kernel.org/stable/c/83226c71af53fb9b3cad40cb9a9a79f36d68c020patch
- https://git.kernel.org/stable/c/d6869537013b1f21b292342752d97868b79b5934patch
- https://git.kernel.org/stable/c/e9f1081bc775146156def0dbc821b92f35d56afbpatch
- https://git.kernel.org/stable/c/568173ad9bd0b46cc6cd937dea8791e9b5eefa57patch
- https://git.kernel.org/stable/c/d748603f12baff112caa3ab7d39f50100f010dbdpatch
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.