CVE-2026-43023: Software Security Vulnerability Vulnerability
HIGHCVE-2026-43023 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-2026-43023 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-2026-43023
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-2026-43023, 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-2026-43023?
Which Software versions are affected?
What version fixes CVE-2026-43023?
What is the CVSS score of CVE-2026-43023?
What CWE is associated with CVE-2026-43023?
How can I check Maven dependencies for CVE-2026-43023?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-wvxr-8p4p-pcpq",
"modified" : "2026-05-03T09:33:10Z",
"published" : "2026-05-01T15:30:36Z",
"aliases" : [ "CVE-2026-43023" ],
"details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: SCO: fix race conditions in sco_sock_connect()\n\nsco_sock_connect() checks sk_state and sk_type without holding\nthe socket lock. Two concurrent connect() syscalls on the same\nsocket can both pass the check and enter sco_connect(), leading\nto use-after-free.\n\nThe buggy scenario involves three participants and was confirmed\nwith additional logging instrumentation:\n\n Thread A (connect): HCI disconnect: Thread B (connect):\n\n sco_sock_connect(sk) sco_sock_connect(sk)\n sk_state==BT_OPEN sk_state==BT_OPEN\n (pass, no lock) (pass, no lock)\n sco_connect(sk): sco_connect(sk):\n hci_dev_lock hci_dev_lock\n hci_connect_sco <- blocked\n -> hcon1\n sco_conn_add->conn1\n lock_sock(sk)\n sco_chan_add:\n conn1->sk = sk\n sk->conn = conn1\n sk_state=BT_CONNECT\n release_sock\n hci_dev_unlock\n hci_dev_lock\n sco_conn_del:\n lock_sock(sk)\n sco_chan_del:\n sk->conn=NULL\n conn1->sk=NULL\n sk_state=\n BT_CLOSED\n SOCK_ZAPPED\n release_sock\n hci_dev_unlock\n (unblocked)\n hci_connect_sco\n -> hcon2\n sco_conn_add\n -> conn2\n lock_sock(sk)\n sco_chan_add:\n sk->conn=conn2\n sk_state=\n BT_CONNECT\n // zombie sk!\n release_sock\n hci_dev_unlock\n\nThread B revives a BT_CLOSED + SOCK_ZAPPED socket back to\nBT_CONNECT. Subsequent cleanup triggers double sock_put() and\nuse-after-free. Meanwhile conn1 is leaked as it was orphaned\nwhen sco_conn_del() cleared the association.\n\nFix this by:\n- Moving lock_sock() before the sk_state/sk_type checks in\n sco_sock_connect() to serialize concurrent connect attempts\n- Fixing the sk_type != SOCK_SEQPACKET check to actually\n return the error instead of just assigning it\n- Adding a state re-check in sco_connect() after lock_sock()\n to catch state changes during the window between the locks\n- Adding sco_pi(sk)->conn check in sco_chan_add() to prevent\n double-attach of a socket to multiple connections\n- Adding hci_conn_drop() on sco_chan_add failure to prevent\n HCI connection leaks",
"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-2026-43023"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/7e296ffdab5bdab718dff7c14288fdcb9154fa27"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/8a5b0135d4a5d9683203a3d9a12a711ccec5936b"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/98c8d3bfdaa657d8f472dbbebd7ea8cd816d8a8d"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/adb90cd0f9f7a8d438fcb93354040fbafc5ae2a0"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/d002bd11024bd231bcb606877e33951ffb7bed14"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/dabf22269242e2f2bf44c43fcdc2fa763df7f9cc"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-362" ],
"severity" : "HIGH",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-05-01T15:16:46Z"
}
}