CVE-2026-64141: Software Security Vulnerability Vulnerability
HIGHCVE-2026-64141 is a HIGH (CVSS 7.5) security vulnerability vulnerability (CWE-476: NULL Pointer Dereference) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product dereferences a pointer that it expects to be valid but is null.. Remediation is available in the latest vendor maintenance releases.
CVE-2026-64141 at a Glance
Security Impact
CVSS: 7.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
How to Fix CVE-2026-64141
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-2026-64141, 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-476: NULL Pointer Dereference, where the product dereferences a pointer that it expects to be valid but is null. 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-2026-64141?
Which Software versions are affected?
What version fixes CVE-2026-64141?
What is the CVSS score of CVE-2026-64141?
What CWE is associated with CVE-2026-64141?
How can I check Maven dependencies for CVE-2026-64141?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-5c3g-3v2r-672g",
"modified" : "2026-07-20T15:32:01Z",
"published" : "2026-07-19T18:31:53Z",
"aliases" : [ "CVE-2026-64141" ],
"details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix null pointer dereference in compare_guid_key()\n\nsession_fd_check() walks the per-inode m_op_list during durable-handle\nsession teardown and sets op->conn = NULL for every opinfo whose conn\nmatched the closing session's connection. The matching opinfo, however,\nstays linked in its per-ClientGuid lease_table_list entry's lb->lease_list\nbecause destroy_lease_table() only runs on full TCP-connection teardown,\nnot on SESSION_LOGOFF.\n\nIf the same TCP connection then negotiates a fresh session with the\nsame ClientGuid (ClientGuid is bound to NEGOTIATE, not the session, and\nis unchanged across LOGOFF + SETUP) and issues a SMB2 CREATE with a\nlease context on a different inode, find_same_lease_key() walks\nlb->lease_list, reaches the stale opinfo, and calls compare_guid_key(),\nwhich unconditionally dereferences opinfo->conn->ClientGUID. The conn\npointer is NULL and the kernel panics.\n\nReproducer requires only a successful SMB2 SESSION_SETUP and a share\nconfigured with 'durable handles = yes'. KASAN report on mainline\n70390501d194:\n\n general protection fault, probably for non-canonical address\n 0xdffffc0000000069: 0000 [#1] SMP KASAN PTI\n KASAN: null-ptr-deref in range [0x0000000000000348-0x000000000000034f]\n Workqueue: ksmbd-io handle_ksmbd_work\n RIP: 0010:bcmp+0x5b/0x230\n Call Trace:\n compare_guid_key+0x4b/0xd0\n find_same_lease_key+0x324/0x690\n smb2_open+0x6aea/0x8e60\n handle_ksmbd_work+0x796/0xee0\n ...\n\nFaulting address 0x348 is the offset of ClientGUID within struct\nksmbd_conn, confirming opinfo->conn was NULL.\n\nRead opinfo->conn once and bail out if it has been cleared by a\nconcurrent session_fd_check(). A half-detached opinfo cannot be the\nowner of an active lease, so returning 0 is the correct match result.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
} ],
"affected" : [ ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-64141"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/0836081b394ca074d1b910f2b990ff7b4b4404c7"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/4b83cbc4c15f09b000cc06f033f64b0824b6dc87"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/af86896ca3239e25a6bd7d352213371265073d38"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/cd5c1b75d2f454f625d7dc55bd3ae21d0855f6ad"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/e43cb36d4d7827710cfcd48e95e29a507f0d87be"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-476" ],
"severity" : "HIGH",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-07-19T16:17:55Z"
}
}