CVE-2026-46307 Details
Description
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.
A vulnerability in the ath5k wireless driver of the Linux kernel has been identified, where the driver improperly accesses an array, leading to an array-index-out-of-bounds condition. This issue was highlighted by a Undefined Behavior Sanitizer (UBSAN) message indicating that an index was out of range for the expected data type. The problem arises because the driver does not correctly validate array indices before use, which can potentially lead to memory corruption, although in this case, the out-of-bounds write only overwrites a nearby variable related to acknowledgment signals.
The vulnerability has been addressed in the Linux kernel. Users should upgrade to the latest version of the stable Linux kernel where this issue has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/568173ad9bd0b46cc6cd937dea8791e9b5eefa57 | kernel.org | Patch |
| https://git.kernel.org/stable/c/744c19e266b0d2628c5951439195dcef27eadacf | kernel.org | Patch |
| https://git.kernel.org/stable/c/83226c71af53fb9b3cad40cb9a9a79f36d68c020 | kernel.org | Patch |
| https://git.kernel.org/stable/c/9dd6aae4bc7bfa11088d928670a3315eae542769 | kernel.org | Patch |
| https://git.kernel.org/stable/c/d6869537013b1f21b292342752d97868b79b5934 | kernel.org | Patch |
| https://git.kernel.org/stable/c/d748603f12baff112caa3ab7d39f50100f010dbd | kernel.org | Patch |
| https://git.kernel.org/stable/c/e9f1081bc775146156def0dbc821b92f35d56afb | kernel.org | Patch |
| https://git.kernel.org/stable/c/ecb1c163166759dec004c1fdb9709b8a5992fc8e | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-125 | Out-of-bounds Read | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 3.0, < 5.10.258 >= 5.11, < 5.15.209 >= 5.16, < 6.1.175 >= 6.2, < 6.6.140 >= 6.7, < 6.12.88 >= 6.13, < 6.18.30 >= 6.19, < 7.0.7 7.1 rc1 7.1 rc2 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jul 8, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 14, 2026 | CVE Modified | kernel.org |
| Jun 8, 2026 | New CVE Received | kernel.org |