FKIE_CVE-2026-46307
Vulnerability from fkie_nvd - Published: 2026-06-08 17:16 - Updated: 2026-07-23 08:10
Severity
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.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | 7.1 | |
| linux | linux_kernel | 7.1 |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/wireless/ath/ath5k/base.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"status": "affected",
"version": "6d7b97b23e114c8fbb825e6721164d228c1af3fc",
"versionType": "git"
},
{
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"versionType": "git"
},
{
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"status": "affected",
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"versionType": "git"
},
{
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"versionType": "git"
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"versionType": "git"
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"versionType": "git"
}
]
},
{
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"product": "Linux",
"programFiles": [
"drivers/net/wireless/ath/ath5k/base.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "3.0"
},
{
"lessThan": "3.0",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.258",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.209",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.175",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.140",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.88",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.30",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.*",
"status": "unaffected",
"version": "7.0.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"configurations": [
{
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"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."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nwifi: ath5k: no acceder al array OOB\n\nVincent informa:\n\u003e El controlador ath5k parece realizar un acceso de \u00edndice de array fuera de l\u00edmites como\n\u003e mostrado por el mensaje del kernel de UBSAN:\n\u003e UBSAN: \u00edndice de array fuera de l\u00edmites en drivers/net/wireless/ath/ath5k/base.c:1741:20\n\u003e el \u00edndice 4 est\u00e1 fuera de rango para el tipo \u0027ieee80211_tx_rate [4]\u0027\n\u003e ...\n\u003e Traza de Llamada:\n\u003e \u003cTAREA\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\nEs real. \u0027ts-\u003ets_final_idx\u0027 puede ser 3 en 5212, as\u00ed que:\n info-\u003estatus.rates[ts-\u003ets_final_idx + 1].idx = -1;\ncon el array definido como:\n struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES];\nmientras que el tama\u00f1o es:\n #define IEEE80211_TX_MAX_RATES 4\nes de hecho err\u00f3neo.\n\nEstablecer este centinela \u0027idx = -1\u0027 solo si el \u00edndice del array es menor que el tama\u00f1o del array. Ya que mac80211 no buscar\u00e1 tasas m\u00e1s all\u00e1 del tama\u00f1o (IEEE80211_TX_MAX_RATES).\n\nNota: El efecto de la escritura OOB es insignificante. Simplemente sobrescribe el siguiente miembro de info-\u003estatus, es decir, ack_signal."
}
],
"id": "CVE-2026-46307",
"lastModified": "2026-07-23T08:10:00.137",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "LOW",
"baseScore": 8.3,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.5,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
]
},
"published": "2026-06-08T17:16:49.547",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
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],
"url": "https://git.kernel.org/stable/c/568173ad9bd0b46cc6cd937dea8791e9b5eefa57"
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{
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},
{
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{
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"url": "https://git.kernel.org/stable/c/d6869537013b1f21b292342752d97868b79b5934"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-125"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
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- 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.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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