CVE-2026-64451: Software Security Vulnerability Vulnerability
MODERATECVE-2026-64451 is a MODERATE (CVSS 5.5) 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-2026-64451 at a Glance
Security Impact
CVSS: 5.5
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:N/I:N/A:H).
How to Fix CVE-2026-64451
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-2026-64451, 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-2026-64451?
Which Software versions are affected?
What version fixes CVE-2026-64451?
What is the CVSS score of CVE-2026-64451?
What CWE is associated with CVE-2026-64451?
How can I check Maven dependencies for CVE-2026-64451?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-xvp7-xr44-89mj",
"modified" : "2026-09-03T15:32:01Z",
"published" : "2026-07-25T12:31:36Z",
"aliases" : [ "CVE-2026-64451" ],
"details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix NULL pointer dereference in func_set_flag()\n\nfunc_set_flag() dereferences tr->current_trace_flags before verifying\nthat the current tracer is actually the function tracer. When the active\ntracer has been switched away from \"function\" (e.g., to \"wakeup_rt\"),\ntr->current_trace_flags can be NULL, leading to a NULL pointer\ndereference and kernel crash.\n\nThe call chain that triggers this is:\n\n trace_options_write()\n -> __set_tracer_option()\n -> trace->set_flag() /* func_set_flag */\n\nIn func_set_flag(), the first operation is:\n\n if (!!set == !!(tr->current_trace_flags->val & bit))\n\nThis dereferences tr->current_trace_flags unconditionally. The safety\ncheck that guards against a non-function tracer:\n\n if (tr->current_trace != &function_trace)\n return 0;\n\nis placed *after* the dereference, which is too late.\n\nThis was observed with the following crash dump:\n\n BUG: unable to handle page fault at 0000000000000000\n RIP: func_set_flag+0xd\n\n Call Trace:\n __set_tracer_option+0x27\n trace_options_write+0x75\n vfs_write+0x12a\n ksys_write+0x66\n do_syscall_64+0x5b\n\n RIP: ffffffff914c973d RSP: ff67ec88b01dfdf0 RFLAGS: 00010202\n RAX: 0000000000000000 RBX: ff3a826e80354580 RCX: 0000000000000001\n RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffffff93918080\n\nThe disassembly confirms the fault:\n\n func_set_flag+0: mov 0x1f08(%rdi), %rax ; RAX = tr->current_trace_flags = NULL\n func_set_flag+13: mov (%rax), %eax ; page fault: dereference NULL\n\nAt the time of the crash:\n tr->current_trace_flags = 0x0 (NULL)\n tr->current_trace = wakeup_rt_tracer (not function_trace)\n\nThe scenario is that a process opens a function tracer option file (such\nas \"func_stack_trace\"), then the current tracer is switched to another\ntracer (e.g., \"wakeup_rt\"), which sets current_trace_flags to NULL. When\nthe process subsequently writes to the option file, func_set_flag() is\ninvoked and crashes on the NULL dereference.\n\nFix this by moving the current_trace check before the\ncurrent_trace_flags dereference, so that func_set_flag() returns early\nwhen the function tracer is not active.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
} ],
"affected" : [ ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-64451"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/69f17ac132a38974cf1defb480cef6b79d1ab768"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/c3e94604675e3db186111b8942650d86577df9b0"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-476" ],
"severity" : "MODERATE",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-07-25T10:17:30Z"
}
}