CVE-2026-64121: Software Security Vulnerability Vulnerability
HIGHCVE-2026-64121 is a HIGH (CVSS 7.1) security vulnerability vulnerability (CWE-125: Out-of-bounds Read) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product reads data past the end, or before the beginning, of the intended buffer.. Remediation is available in the latest vendor maintenance releases.
CVE-2026-64121 at a Glance
Security Impact
CVSS: 7.1
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H).
How to Fix CVE-2026-64121
To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:treeHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-64121, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:treeAnalyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.
Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-125: Out-of-bounds Read, where the product reads data past the end, or before the beginning, of the intended buffer. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
References
Frequently Asked Questions
What is CVE-2026-64121?
Which Software versions are affected?
What version fixes CVE-2026-64121?
What is the CVSS score of CVE-2026-64121?
What CWE is associated with CVE-2026-64121?
How can I check Maven dependencies for CVE-2026-64121?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-478c-pq6v-xx69",
"modified" : "2026-08-13T15:34:13Z",
"published" : "2026-07-19T18:31:52Z",
"aliases" : [ "CVE-2026-64121" ],
"details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ifb: report ethtool stats over num_tx_queues\n\nifb_dev_init() allocates dp->tx_private to dev->num_tx_queues\nentries via kzalloc_objs(*txp, dev->num_tx_queues). Both IFB\nper-queue RX and TX stats live in those entries: ifb_xmit() updates\ntxp->rx_stats using the skb queue mapping, ifb_ri_tasklet() updates\ntxp->tx_stats, and ifb_stats64() aggregates both over\ndev->num_tx_queues.\n\nThe ethtool stats callbacks instead size and walk the per-queue\nstats with dev->real_num_rx_queues and dev->real_num_tx_queues. With\nan asymmetric device where the RX queue count exceeds the TX queue\ncount, for example:\n\n ip link add name ifb10 numtxqueues 1 numrxqueues 8 type ifb\n ethtool -S ifb10\n\nifb_get_ethtool_stats() indexes past the tx_private allocation and\ncopies adjacent slab data through ETHTOOL_GSTATS.\n\nUse dev->num_tx_queues consistently for the stats strings, the\nstats count, and the stats data walks. This reports one RX stats\ngroup and one TX stats group for each backing ifb_q_private entry,\nwhich is the queue set IFB can actually populate.\n\nReproduced under UML+KASAN at v7.1-rc2:\n\n BUG: KASAN: slab-out-of-bounds in ifb_fill_stats_data+0x3c/0xae\n Read of size 8 at addr 0000000062dbd228 by task ethtool/36\n ifb_fill_stats_data+0x3c/0xae\n ifb_get_ethtool_stats+0xc0/0x129\n __dev_ethtool+0x1ca5/0x363c\n dev_ethtool+0x123/0x1b3\n dev_ioctl+0x56c/0x744\n sock_do_ioctl+0x15f/0x1b2\n sock_ioctl+0x4d5/0x50a\n sys_ioctl+0xd8b/0xde9\n\nWith the patch applied, the same UML+KASAN repro is silent and\nethtool -S ifb10 reports only the stats backed by the single\nallocated tx_private entry.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
} ],
"affected" : [ ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-64121"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/16bd798cb6d8337d7c3eea1adc412f31b5181d5b"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/2638e1773904d7aa8f24c6e7fda2ed7d69df6fa4"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/301a554e458e2f5ec47f2c336a7cb03b877f9fd6"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/5db89c99566fc4728cc92e941d8e1975711e24b5"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/6afdb8113cb007f9332f59a9b7fd45731b8a9de5"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/f8a5a76b4a683043c6eff2a060bcaa17f9316ad5"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-125" ],
"severity" : "HIGH",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-07-19T16:17:53Z"
}
}