{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-46307", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.111Z", "datePublished": "2026-06-08T15:46:35.059Z", "dateUpdated": "2026-08-05T12:31:09.813Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:31:09.813Z" }, "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> The ath5k driver seems to do an array-index-out-of-bounds access as\n> shown by the UBSAN kernel message:\n> UBSAN: array-index-out-of-bounds in drivers/net/wireless/ath/ath5k/base.c:1741:20\n> index 4 is out of range for type 'ieee80211_tx_rate [4]'\n> ...\n> Call Trace:\n> \n> dump_stack_lvl+0x5d/0x80\n> ubsan_epilogue+0x5/0x2b\n> __ubsan_handle_out_of_bounds.cold+0x46/0x4b\n> ath5k_tasklet_tx+0x4e0/0x560 [ath5k]\n> tasklet_action_common+0xb5/0x1c0\n\nIt is real. 'ts->ts_final_idx' can be 3 on 5212, so:\n info->status.rates[ts->ts_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 'idx = -1' 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->status, i.e. ack_signal." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L", "baseScore": 8.3, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - The flaw fires on AR5212 TX completion in the ath5k driver when multi-rate retry exhausts to series index 3; an adjacent WiFi attacker can induce victim transmissions and RF/rate conditions that reach this path without remote Internet routing.\nAC:L - Once AR5212 hardware with ath5k is present, reaching `ts_final_idx == 3` is normal MRR behavior under poor link quality, and an attacker can reliably force that state through sustained WiFi traffic and interference rather than depending on uncontrollable timing or layout.\nPR:N - Exploitation requires no privileges on the victim host; an adjacent WiFi peer can trigger victim TX completions through standard 802.11 interaction (association, data frames, deauth/retry pressure) without local shell or capability-bearing access.\nUI:N - No victim user action such as mounting a filesystem or opening a file is required; the bug is hit automatically during routine wireless transmit completion handling.\nS:U - Impact is confined to kernel wireless driver TX-status metadata on the same host and does not cross VM, container, or IOMMU security boundaries.\nC:H - The out-of-bounds write corrupts kernel memory in `ieee80211_tx_info.status` (clobbering `ack_signal`), and any OOB kernel memory corruption is treated as enabling information disclosure through corrupted status data fed back into mac80211.\nI:H - The vulnerability is an out-of-bounds write (`rates[ts_final_idx + 1].idx = -1` with `ts_final_idx == 3`) that modifies adjacent kernel metadata beyond the allocated `rates[4]` array.\nA:L - The corruption primarily perturbs TX status/rate-control state rather than reliably panicking production kernels, but can degrade wireless availability through corrupted ACK signal and rate-reporting used by mac80211/minstrel." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/wireless/ath/ath5k/base.c" ], "versions": [ { "version": "6d7b97b23e114c8fbb825e6721164d228c1af3fc", "lessThan": "ecb1c163166759dec004c1fdb9709b8a5992fc8e", "status": "affected", "versionType": "git" }, { "version": "6d7b97b23e114c8fbb825e6721164d228c1af3fc", "lessThan": "9dd6aae4bc7bfa11088d928670a3315eae542769", "status": "affected", "versionType": "git" }, { "version": "6d7b97b23e114c8fbb825e6721164d228c1af3fc", "lessThan": "744c19e266b0d2628c5951439195dcef27eadacf", "status": "affected", "versionType": "git" }, { "version": "6d7b97b23e114c8fbb825e6721164d228c1af3fc", "lessThan": "83226c71af53fb9b3cad40cb9a9a79f36d68c020", "status": "affected", "versionType": "git" }, { "version": "6d7b97b23e114c8fbb825e6721164d228c1af3fc", "lessThan": "d6869537013b1f21b292342752d97868b79b5934", "status": "affected", "versionType": "git" }, { "version": "6d7b97b23e114c8fbb825e6721164d228c1af3fc", "lessThan": "e9f1081bc775146156def0dbc821b92f35d56afb", "status": "affected", "versionType": "git" }, { "version": "6d7b97b23e114c8fbb825e6721164d228c1af3fc", "lessThan": "568173ad9bd0b46cc6cd937dea8791e9b5eefa57", "status": "affected", "versionType": "git" }, { "version": "6d7b97b23e114c8fbb825e6721164d228c1af3fc", "lessThan": "d748603f12baff112caa3ab7d39f50100f010dbd", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/wireless/ath/ath5k/base.c" ], "versions": [ { "version": "3.0", "status": "affected" }, { "version": "0", "lessThan": "3.0", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.258", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.140", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.88", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.30", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0.7", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0", "versionEndExcluding": "5.10.258" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0", "versionEndExcluding": "5.15.209" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0", "versionEndExcluding": "6.1.175" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0", "versionEndExcluding": "6.6.140" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0", "versionEndExcluding": "6.12.88" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0", "versionEndExcluding": "6.18.30" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0", "versionEndExcluding": "7.0.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0", "versionEndExcluding": "7.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/ecb1c163166759dec004c1fdb9709b8a5992fc8e" }, { "url": "https://git.kernel.org/stable/c/9dd6aae4bc7bfa11088d928670a3315eae542769" }, { "url": "https://git.kernel.org/stable/c/744c19e266b0d2628c5951439195dcef27eadacf" }, { "url": "https://git.kernel.org/stable/c/83226c71af53fb9b3cad40cb9a9a79f36d68c020" }, { "url": "https://git.kernel.org/stable/c/d6869537013b1f21b292342752d97868b79b5934" }, { "url": "https://git.kernel.org/stable/c/e9f1081bc775146156def0dbc821b92f35d56afb" }, { "url": "https://git.kernel.org/stable/c/568173ad9bd0b46cc6cd937dea8791e9b5eefa57" }, { "url": "https://git.kernel.org/stable/c/d748603f12baff112caa3ab7d39f50100f010dbd" } ], "title": "wifi: ath5k: do not access array OOB", "x_generator": { "engine": "bippy-1.2.0" } } } }