CVE-2026-64225: linux Improper Validation of Array Index
Vulnerability summary
CVE-2026-64225 is a high (CVSS 7.8) Improper Validation of Array Index vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.2% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 34 · Related 34Timeline
- 24-07-2026PublishedVulnerability first disclosed.
Description
In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: CGX: add bounds check to cgx_speed_mbps index cgx_speed_mbps has 13 elements but RESP_LINKSTAT_SPEED can yield values 0-15. If it returns a value >= 13, this causes an out-of-bounds array access. Add a bounds check and default to speed 0 if the index is out of range.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.13%
Chance of exploitation in the next 30 days
Percentile
2%
Versus all other CVEs
30-day change
0.00 pp
From 0.13% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu163 products
- linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-139.139 | < 7.0.0-28.28
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1064.67 | < 7.0.0-1009.9
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 61071a871ea6eb2125ece91c1a0dbb124a318c8a, < 94071141f00bc414e8f8f7f5db3b5143d535299f | ≥ 61071a871ea6eb2125ece91c1a0dbb124a318c8a, < 985b5e38ac4f4d5ff03c8bfd8484353b440a1579 | ≥ 61071a871ea6eb2125ece91c1a0dbb124a318c8a, < 93d3dc81098cd60fb74d434ba7985ddfd9de5acb | ≥ 61071a871ea6eb2125ece91c1a0dbb124a318c8a, < e043017ac429caee73bd30c5a725659f1a3a4568 | ≥ 61071a871ea6eb2125ece91c1a0dbb124a318c8a, < 8201bf45cc7c1c1a09290c4db8ab1e19801f8fec | ≥ 61071a871ea6eb2125ece91c1a0dbb124a318c8a, < 47a4cf2229be379cf88f92e32e1240337cd6273f | ≥ 61071a871ea6eb2125ece91c1a0dbb124a318c8a, < 2c3d26b4a62454945ba9ef3af3174d3e40e7afef | ≥ 61071a871ea6eb2125ece91c1a0dbb124a318c8a, < c0bf0a4f3f1f5f57aa83e1400ba4f56f0abfd542 | 4.20
- linux_kernel≥ 4.20, < 5.10.259 | ≥ 5.11, < 5.15.210 | ≥ 5.16, < 6.1.176 | ≥ 6.2, < 6.6.143 | ≥ 6.7, < 6.12.92 | ≥ 6.13, < 6.18.34 | ≥ 6.19, < 7.0.11 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4
Debian1 product
- linux< 6.1.176-1 | < 6.12.94-1 | < 7.0.12-1
3 vendors · 166 products
