CVE-2026-46307wifi: ath5k: do not access array OOB
- 8.3HighCVSS base score
- 0.24%Exploitation in 30 daysEPSS · top 85% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 26 days later
· 26 days later
Published
- 4 months later
· 4 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.3 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L |
| NVDNVD · Modified | 3.1 | High8.3 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L |
- EPSS (exploitation in 30 days)
- 0.24% · top 85% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.3.
Affected products
- affected 6d7b97b23e114c8fbb825e6721164d228c1af3fc – < ecb1c163166759dec004c1fdb9709b8a5992fc8e
- affected 6d7b97b23e114c8fbb825e6721164d228c1af3fc – < 9dd6aae4bc7bfa11088d928670a3315eae542769
- affected 6d7b97b23e114c8fbb825e6721164d228c1af3fc – < 744c19e266b0d2628c5951439195dcef27eadacf
- affected 6d7b97b23e114c8fbb825e6721164d228c1af3fc – < 83226c71af53fb9b3cad40cb9a9a79f36d68c020
- affected 6d7b97b23e114c8fbb825e6721164d228c1af3fc – < d6869537013b1f21b292342752d97868b79b5934
- affected 6d7b97b23e114c8fbb825e6721164d228c1af3fc – < e9f1081bc775146156def0dbc821b92f35d56afb
- affected 6d7b97b23e114c8fbb825e6721164d228c1af3fc – < 568173ad9bd0b46cc6cd937dea8791e9b5eefa57
- affected 6d7b97b23e114c8fbb825e6721164d228c1af3fc – < d748603f12baff112caa3ab7d39f50100f010dbd
- affected 3.0
- unaffected < 3.0
- unaffected 5.10.258 – ≤ 5.10.*
- unaffected 5.15.209 – ≤ 5.15.*
- unaffected 6.1.175 – ≤ 6.1.*
- unaffected 6.6.140 – ≤ 6.6.*
- unaffected 6.12.88 – ≤ 6.12.*
- unaffected 6.18.30 – ≤ 6.18.*
- unaffected 7.0.7 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References9
- https://git.kernel.org/stable/c/ecb1c163166759dec004c1fdb9709b8a5992fc8e (opens in a new tab)
- https://git.kernel.org/stable/c/9dd6aae4bc7bfa11088d928670a3315eae542769 (opens in a new tab)
- https://git.kernel.org/stable/c/744c19e266b0d2628c5951439195dcef27eadacf (opens in a new tab)
- https://git.kernel.org/stable/c/83226c71af53fb9b3cad40cb9a9a79f36d68c020 (opens in a new tab)
- https://git.kernel.org/stable/c/d6869537013b1f21b292342752d97868b79b5934 (opens in a new tab)
- https://git.kernel.org/stable/c/e9f1081bc775146156def0dbc821b92f35d56afb (opens in a new tab)
- https://git.kernel.org/stable/c/568173ad9bd0b46cc6cd937dea8791e9b5eefa57 (opens in a new tab)
- https://git.kernel.org/stable/c/d748603f12baff112caa3ab7d39f50100f010dbd (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-35172 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-46307)Record last updated .