CVE-2026-97993: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-g949-hj9j-pmpj
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Advisory Summary

CVE-2026-97993 is a security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-97993 at a Glance

CVE Identifier CVE-2026-97993
GHSA Identifier GHSA-g949-hj9j-pmpj
Severity N/A
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-97993

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.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-97993, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze 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 General Security Weakness. 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

In the Linux kernel, the following vulnerability has been resolved: vhost-vdpa: don't install the eventfd_ctx_fdget() error in config_ctx vhost_vdpa_set_config_call() swaps the eventfd_ctx_fdget() return value into v->config_ctx before checking it, so on failure the field briefly holds an ERR_PTR: ctx = fd == VHOST_FILE_UNBIND ? NULL : eventfd_ctx_fdget(fd); swap(ctx, v->config_ctx); if (!IS_ERR_OR_NULL(ctx)) eventfd_ctx_put(ctx); if (IS_ERR(v->config_ctx)) { long ret = PTR_ERR(v->config_ctx); v->config_ctx = NULL; return ret; } Commit 0bde59c1723a ("vhost-vdpa: set v->config_ctx to NULL if eventfd_ctx_fdget() fails") added that clearing, and spelled out the invariant the rest of the file relies on: "we consider 'v->config_ctx' valid if it is not NULL". The window between the swap and the clearing still breaks it. vhost_vdpa_config_cb() only tests for NULL, so a config interrupt delivered inside the window hands the ERR_PTR to eventfd_signal(). Check the fd before installing it instead. That closes the window and matches how vhost_vring_ioctl() handles the same failure for the vq call fd. It also stops a rejected fd from tearing down a config interrupt that was working: until now the swap replaced the live context and put it, so after an EBADF the device silently stopped delivering config interrupts until userspace installed a new fd.

References

NVD — CVE-2026-97993 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-97993
git.kernel.org/stable/c/388c678639... WEB
https://git.kernel.org/stable/c/388c678639a0cebfd936b3e56c64ac6a371efec2
git.kernel.org/stable/c/4fde085eb8... WEB
https://git.kernel.org/stable/c/4fde085eb839fbb39c25cbba5d2a091ded394877
git.kernel.org/stable/c/59fc7c1c6b... WEB
https://git.kernel.org/stable/c/59fc7c1c6b4d325194ca45352180340092d95098
git.kernel.org/stable/c/65faf9eaa0... WEB
https://git.kernel.org/stable/c/65faf9eaa00e408e1406fbcf675c8c8d0e27ff2a
git.kernel.org/stable/c/66e73fa189... WEB
https://git.kernel.org/stable/c/66e73fa18910b39fea0941dea5fe091122240855
git.kernel.org/stable/c/6b20b40f02... WEB
https://git.kernel.org/stable/c/6b20b40f020bde236f6b8a08ff88d8653261ec2b
git.kernel.org/stable/c/e260dc9fbf... WEB
https://git.kernel.org/stable/c/e260dc9fbfdae0978e7a8698f977fbb463a657be
git.kernel.org/stable/c/e74a9fa507... WEB
https://git.kernel.org/stable/c/e74a9fa50749b9940b4fb13199652325e08d3c4a

Frequently Asked Questions

What is CVE-2026-97993?
CVE-2026-97993 is a security vulnerability in Software classified as a security vulnerability vulnerability under General Security Weakness.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-97993?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-97993?
CVE-2026-97993 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-97993?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-g949-hj9j-pmpj",
  "modified" : "2026-10-03T12:31:25Z",
  "published" : "2026-09-25T12:31:32Z",
  "aliases" : [ "CVE-2026-97993" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nvhost-vdpa: don't install the eventfd_ctx_fdget() error in config_ctx\n\nvhost_vdpa_set_config_call() swaps the eventfd_ctx_fdget() return value\ninto v->config_ctx before checking it, so on failure the field briefly\nholds an ERR_PTR:\n\n\tctx = fd == VHOST_FILE_UNBIND ? NULL : eventfd_ctx_fdget(fd);\n\tswap(ctx, v->config_ctx);\n\n\tif (!IS_ERR_OR_NULL(ctx))\n\t\teventfd_ctx_put(ctx);\n\n\tif (IS_ERR(v->config_ctx)) {\n\t\tlong ret = PTR_ERR(v->config_ctx);\n\n\t\tv->config_ctx = NULL;\n\t\treturn ret;\n\t}\n\nCommit 0bde59c1723a (\"vhost-vdpa: set v->config_ctx to NULL if\neventfd_ctx_fdget() fails\") added that clearing, and spelled out the\ninvariant the rest of the file relies on: \"we consider 'v->config_ctx'\nvalid if it is not NULL\".  The window between the swap and the clearing\nstill breaks it.  vhost_vdpa_config_cb() only tests for NULL, so a config\ninterrupt delivered inside the window hands the ERR_PTR to\neventfd_signal().\n\nCheck the fd before installing it instead.  That closes the window and\nmatches how vhost_vring_ioctl() handles the same failure for the vq call\nfd.\n\nIt also stops a rejected fd from tearing down a config interrupt that was\nworking: until now the swap replaced the live context and put it, so\nafter an EBADF the device silently stopped delivering config interrupts\nuntil userspace installed a new fd.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-97993"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/388c678639a0cebfd936b3e56c64ac6a371efec2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4fde085eb839fbb39c25cbba5d2a091ded394877"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/59fc7c1c6b4d325194ca45352180340092d95098"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/65faf9eaa00e408e1406fbcf675c8c8d0e27ff2a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/66e73fa18910b39fea0941dea5fe091122240855"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6b20b40f020bde236f6b8a08ff88d8653261ec2b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e260dc9fbfdae0978e7a8698f977fbb463a657be"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e74a9fa50749b9940b4fb13199652325e08d3c4a"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-25T11:17:27Z"
  }
}