CVE-2026-43071: Software Security Vulnerability Vulnerability
CRITICALCVE-2026-43071 is a CRITICAL (CVSS 9.1) 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-2026-43071 at a Glance
Security Impact
CVSS: 9.1
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:H/I:N/A:H).
How to Fix CVE-2026-43071
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-2026-43071, 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-2026-43071?
Which Software versions are affected?
What version fixes CVE-2026-43071?
What is the CVSS score of CVE-2026-43071?
What CWE is associated with CVE-2026-43071?
How can I check Maven dependencies for CVE-2026-43071?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-977x-crv2-w57m",
"modified" : "2026-10-15T03:35:49Z",
"published" : "2026-05-05T18:33:25Z",
"aliases" : [ "CVE-2026-43071" ],
"details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ndcache: Limit the minimal number of bucket to two\n\nThere is an OOB read problem on dentry_hashtable when user sets\n'dhash_entries=1':\n BUG: unable to handle page fault for address: ffff888b30b774b0\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n Oops: Oops: 0000 [#1] SMP PTI\n RIP: 0010:__d_lookup+0x56/0x120\n Call Trace:\n d_lookup.cold+0x16/0x5d\n lookup_dcache+0x27/0xf0\n lookup_one_qstr_excl+0x2a/0x180\n start_dirop+0x55/0xa0\n simple_start_creating+0x8d/0xa0\n debugfs_start_creating+0x8c/0x180\n debugfs_create_dir+0x1d/0x1c0\n pinctrl_init+0x6d/0x140\n do_one_initcall+0x6d/0x3d0\n kernel_init_freeable+0x39f/0x460\n kernel_init+0x2a/0x260\n\nThere will be only one bucket in dentry_hashtable when dhash_entries is\nset as one, and d_hash_shift is calculated as 32 by dcache_init(). Then,\nfollowing process will access more than one buckets(which memory region\nis not allocated) in dentry_hashtable:\n d_lookup\n b = d_hash(hash)\n dentry_hashtable + ((u32)hashlen >> d_hash_shift)\n // The C standard defines the behavior of right shift amounts\n // exceeding the bit width of the operand as undefined. The\n // result of '(u32)hashlen >> d_hash_shift' becomes 'hashlen',\n // so 'b' will point to an unallocated memory region.\n hlist_bl_for_each_entry_rcu(b)\n hlist_bl_first_rcu(head)\n h->first // read OOB!\n\nFix it by limiting the minimal number of dentry_hashtable bucket to two,\nso that 'd_hash_shift' won't exceeds the bit width of type u32.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
} ],
"affected" : [ ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-43071"
}, {
"type" : "WEB",
"url" : "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
}, {
"type" : "WEB",
"url" : "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"
}, {
"type" : "WEB",
"url" : "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/277cedabb0ab86baae83fa58218be13c6d3e5526"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/426ef05e82ee52c8d0e95fc0808b7383d8352d73"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/45b06bb5ea96f75ad81d7ef446f832ea6b0026fe"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/5718df131ab78897a9dd1f2e71c3ba732d4392af"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/755b40903eff563768d4d96fd4ef51ec48adde3b"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/ddd57ebce245f9c7e2f6902a6c087d6186d2385d"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/f08fe8891c3eeb63b73f9f1f6d97aa629c821579"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-125" ],
"severity" : "CRITICAL",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-05-05T16:16:16Z"
}
}