CVE-2026-64189: Software Security Vulnerability Vulnerability
HIGHCVE-2026-64189 is a HIGH (CVSS 7.8) security vulnerability vulnerability (CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.. Remediation is available in the latest vendor maintenance releases.
CVE-2026-64189 at a Glance
Security Impact
CVSS: 7.8
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:H/A:H).
How to Fix CVE-2026-64189
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-2026-64189, 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-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'), where the product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently. 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-2026-64189?
Which Software versions are affected?
What version fixes CVE-2026-64189?
What is the CVSS score of CVE-2026-64189?
What CWE is associated with CVE-2026-64189?
How can I check Maven dependencies for CVE-2026-64189?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-38c9-7h78-x2jx",
"modified" : "2026-07-27T06:30:30Z",
"published" : "2026-07-20T18:32:33Z",
"aliases" : [ "CVE-2026-64189" ],
"details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ipset: fix race between dump and ip_set_list resize\n\nThe release path of ip_set_dump_do() and ip_set_dump_done() read\ninst->ip_set_list via ip_set_ref_netlink(), a plain rcu_dereference_raw()\nof the array pointer. These run from netlink_recvmsg() without the nfnl\nmutex and without an RCU read-side critical section.\n\nA concurrent ip_set_create() can grow the array: it publishes the new\narray, calls synchronize_net() and then kvfree()s the old one. Since the\ndump paths read the array outside any RCU reader, synchronize_net() does\nnot wait for them and the old array can be freed while they still index\ninto it, causing a use-after-free.\n\nThe dumped set itself stays pinned via set->ref_netlink, so only the\narray load needs protecting. Take rcu_read_lock() around it, matching\nip_set_get_byname() and __ip_set_put_byindex().\n\n BUG: KASAN: slab-use-after-free in ip_set_dump_do (net/netfilter/ipset/ip_set_core.c:1697)\n Read of size 8 at addr ffff88800b5c4018 by task exploit/150\n Call Trace:\n ...\n kasan_report (mm/kasan/report.c:595)\n ip_set_dump_do (net/netfilter/ipset/ip_set_core.c:1697)\n netlink_dump (net/netlink/af_netlink.c:2325)\n netlink_recvmsg (net/netlink/af_netlink.c:1976)\n sock_recvmsg (net/socket.c:1159)\n __sys_recvfrom (net/socket.c:2315)\n ...\n Oops: general protection fault, probably for non-canonical address ... KASAN NOPTI\n KASAN: maybe wild-memory-access in range [0x02d6...d0-0x02d6...d7]\n RIP: 0010:ip_set_dump_do (net/netfilter/ipset/ip_set_core.c:1698)\n Kernel panic - not syncing: Fatal exception",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
} ],
"affected" : [ ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-64189"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/1bc67c3fc98e9fc07032cc56afcdbc690c47d11e"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/7cd9103283b26b917360ec99d7d2f2d761bcf1ab"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/81d54c766337b923eec26da0a13406760b091093"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/96fbafc20ebd9a613736c2998b89c539fe3042f5"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/a7a299277959683204d73333c32c092fd69327d4"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/e8a9976b61f1bc4aa7fd25fa26726dfdf2adf710"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/e8ee198bbc04a32d336e79160fde980e0235b39f"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/ff86ea9b7fdf70564e60436fbee68c96bc459943"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-362" ],
"severity" : "HIGH",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-07-20T17:18:21Z"
}
}