CVE-2026-68478: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-ppgx-492f-63h6
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Advisory Summary

CVE-2026-68478 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-2026-68478 at a Glance

CVE Identifier CVE-2026-68478
GHSA Identifier GHSA-ppgx-492f-63h6
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-2026-68478

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-2026-68478, 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: memstick: ms_block: reject a card that reports too many blocks msb_ftl_initialize() computes the zone count from the card block count with no bound: msb->zone_count = msb->block_count / MS_BLOCKS_IN_ZONE; ... for (i = 0; i < msb->zone_count; i++) msb->free_block_count[i] = MS_BLOCKS_IN_ZONE; msb->block_count is a card value. msb_read_boot_blocks() reads number_of_blocks from the card boot page and byte swaps it. free_block_count is a fixed int[MS_MAX_ZONES]. MS_MAX_ZONES is 16, so the valid indices are 0 to 15. The init loop above indexes it by zone_count. msb_mark_block_used() and msb_mark_block_unused() index it by pba / MS_BLOCKS_IN_ZONE, for pba up to block_count - 1. A card may report up to 65535 blocks. A block_count above 8192 (MS_MAX_ZONES * MS_BLOCKS_IN_ZONE) lets the pba index reach 16. That writes past free_block_count[] and corrupts struct msb_data. A larger count runs the init loop past the end too. A real Memory Stick has at most 16 zones. So it has at most 8192 blocks. msb_ftl_initialize() now rejects a card that reports more than MS_MAX_ZONES * MS_BLOCKS_IN_ZONE blocks.

References

NVD — CVE-2026-68478 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-68478
git.kernel.org/stable/c/39151f0708... WEB
https://git.kernel.org/stable/c/39151f0708c84221e94cdd6aa070aba5d7cb1c01
git.kernel.org/stable/c/47f0c7d856... WEB
https://git.kernel.org/stable/c/47f0c7d856c67c9935546d2644f18c0d0131b449
git.kernel.org/stable/c/718178f524... WEB
https://git.kernel.org/stable/c/718178f524b98bc920d74bc771aed823c8b81425
git.kernel.org/stable/c/8937b11f1c... WEB
https://git.kernel.org/stable/c/8937b11f1c3896e066c3fb07387ba17bc8c50b8a
git.kernel.org/stable/c/a4b9961efe... WEB
https://git.kernel.org/stable/c/a4b9961efe8640f50800811b4a2b2046b3dc2ccc
git.kernel.org/stable/c/b86666ac40... WEB
https://git.kernel.org/stable/c/b86666ac4009a252501cc17242582a7ec9ed976e
git.kernel.org/stable/c/d5db3439ee... WEB
https://git.kernel.org/stable/c/d5db3439ee8d1c165a09a47e984c4ba508c130df
git.kernel.org/stable/c/f1c675ecf6... WEB
https://git.kernel.org/stable/c/f1c675ecf6e5ad02722f0019f729d8bb588d502e

Frequently Asked Questions

What is CVE-2026-68478?
CVE-2026-68478 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-2026-68478?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-68478?
CVE-2026-68478 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-68478?
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-ppgx-492f-63h6",
  "modified" : "2026-08-15T06:32:08Z",
  "published" : "2026-08-15T06:32:08Z",
  "aliases" : [ "CVE-2026-68478" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nmemstick: ms_block: reject a card that reports too many blocks\n\nmsb_ftl_initialize() computes the zone count from the card block count\nwith no bound:\n\n\tmsb->zone_count = msb->block_count / MS_BLOCKS_IN_ZONE;\n\t...\n\tfor (i = 0; i < msb->zone_count; i++)\n\t\tmsb->free_block_count[i] = MS_BLOCKS_IN_ZONE;\n\nmsb->block_count is a card value. msb_read_boot_blocks() reads\nnumber_of_blocks from the card boot page and byte swaps it.\nfree_block_count is a fixed int[MS_MAX_ZONES]. MS_MAX_ZONES is 16, so the\nvalid indices are 0 to 15. The init loop above indexes it by zone_count.\nmsb_mark_block_used() and msb_mark_block_unused() index it by\npba / MS_BLOCKS_IN_ZONE, for pba up to block_count - 1. A card may report\nup to 65535 blocks. A block_count above 8192 (MS_MAX_ZONES *\nMS_BLOCKS_IN_ZONE) lets the pba index reach 16. That writes past\nfree_block_count[] and corrupts struct msb_data. A larger count runs the\ninit loop past the end too.\n\nA real Memory Stick has at most 16 zones. So it has at most 8192 blocks.\nmsb_ftl_initialize() now rejects a card that reports more than\nMS_MAX_ZONES * MS_BLOCKS_IN_ZONE blocks.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-68478"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/39151f0708c84221e94cdd6aa070aba5d7cb1c01"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/47f0c7d856c67c9935546d2644f18c0d0131b449"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/718178f524b98bc920d74bc771aed823c8b81425"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8937b11f1c3896e066c3fb07387ba17bc8c50b8a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a4b9961efe8640f50800811b4a2b2046b3dc2ccc"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b86666ac4009a252501cc17242582a7ec9ed976e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d5db3439ee8d1c165a09a47e984c4ba508c130df"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f1c675ecf6e5ad02722f0019f729d8bb588d502e"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-15T06:20:47Z"
  }
}