8.3

CVE-2026-46307: linux Out-of-bounds Read

CVSS: 8.3v3.1HighModified
AliasesUBUNTU-CVE-2026-46307DEBIAN-CVE-2026-46307
Published 08-06-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-46307 is a high (CVSS 8.3) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.38% chance of exploitation in the next 30 days, higher than 30.7% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.3/10
010
High · v3.1 (CVE.org)
EPSS score
0.38%
0%100%
Low · +0.16 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 51 · Related 51
OPENSUSE-SU-2026:11014-1OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1SUSE-SU-2026:23194-1

Timeline

  1. 08-06-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.38%

Chance of exploitation in the next 30 days

Percentile

31%

Versus all other CVEs

30-day change

+0.16 pp

From 0.22% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.38%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu166 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 6d7b97b23e114c8fbb825e6721164d228c1af3fc, < ecb1c163166759dec004c1fdb9709b8a5992fc8e | ≥ 6d7b97b23e114c8fbb825e6721164d228c1af3fc, < 9dd6aae4bc7bfa11088d928670a3315eae542769 | ≥ 6d7b97b23e114c8fbb825e6721164d228c1af3fc, < 744c19e266b0d2628c5951439195dcef27eadacf | ≥ 6d7b97b23e114c8fbb825e6721164d228c1af3fc, < 83226c71af53fb9b3cad40cb9a9a79f36d68c020 | ≥ 6d7b97b23e114c8fbb825e6721164d228c1af3fc, < d6869537013b1f21b292342752d97868b79b5934 | ≥ 6d7b97b23e114c8fbb825e6721164d228c1af3fc, < e9f1081bc775146156def0dbc821b92f35d56afb | ≥ 6d7b97b23e114c8fbb825e6721164d228c1af3fc, < 568173ad9bd0b46cc6cd937dea8791e9b5eefa57 | ≥ 6d7b97b23e114c8fbb825e6721164d228c1af3fc, < d748603f12baff112caa3ab7d39f50100f010dbd | 3.0
  • 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
Debian1 product
  • linux< 6.1.176-1 | < 6.12.88-1 | < 7.0.7-1

3 vendors · 169 products

References

51 links
Show all 51 references