CVE-2026-68462: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-r48x-xhw6-jmg8
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CVSS 7.8
Published
Advisory Summary

CVE-2026-68462 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-68462 at a Glance

CVE Identifier CVE-2026-68462
GHSA Identifier GHSA-r48x-xhw6-jmg8
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

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).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-68462

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-2026-68462, 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: bpf: Reject negative const offsets for buffer pointers The verifier rejects variable offsets for PTR_TO_TP_BUFFER and PTR_TO_BUF accesses, but it currently accepts a constant negative offset produced by pointer arithmetic. Commit 022ac0750883 ("bpf: use reg->var_off instead of reg->off for pointers") moved constant pointer offsets from reg->off to reg->var_off. However, __check_buffer_access() continued to check only the instruction offset. An access with reg->var_off equal to -8 and an instruction offset of zero therefore passes verification. For writable raw tracepoints, the access end is also calculated from the unsigned reg->var_off.value. An eight-byte access starting at -8 wraps the calculated end to zero, allowing the program to load and attach without increasing max_tp_access. After ensuring that reg->var_off is constant, calculate the effective access start using signed arithmetic and reject it when it is negative. Use the validated start to calculate the access end for both PTR_TO_TP_BUFFER and PTR_TO_BUF.

References

NVD — CVE-2026-68462 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-68462
git.kernel.org/stable/c/314bd59208... WEB
https://git.kernel.org/stable/c/314bd592085c0720ef519f6edbc5f41440ff78d4
git.kernel.org/stable/c/fd4cfa8c8f... WEB
https://git.kernel.org/stable/c/fd4cfa8c8f9a17cdec0539334d28754bc1d8a5d9

Frequently Asked Questions

What is CVE-2026-68462?
CVE-2026-68462 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-2026-68462?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-68462?
CVE-2026-68462 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-68462?
CVE-2026-68462 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-68462?
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 
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  "schema_version" : "1.4.0",
  "id" : "GHSA-r48x-xhw6-jmg8",
  "modified" : "2026-08-17T06:33:03Z",
  "published" : "2026-08-15T06:32:07Z",
  "aliases" : [ "CVE-2026-68462" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject negative const offsets for buffer pointers\n\nThe verifier rejects variable offsets for PTR_TO_TP_BUFFER and PTR_TO_BUF\naccesses, but it currently accepts a constant negative offset produced by\npointer arithmetic.\n\nCommit 022ac0750883 (\"bpf: use reg->var_off instead of reg->off for\npointers\") moved constant pointer offsets from reg->off to reg->var_off.\nHowever, __check_buffer_access() continued to check only the instruction\noffset. An access with reg->var_off equal to -8 and an instruction offset\nof zero therefore passes verification.\n\nFor writable raw tracepoints, the access end is also calculated from the\nunsigned reg->var_off.value. An eight-byte access starting at -8 wraps\nthe calculated end to zero, allowing the program to load and attach\nwithout increasing max_tp_access.\n\nAfter ensuring that reg->var_off is constant, calculate the effective\naccess start using signed arithmetic and reject it when it is negative.\nUse the validated start to calculate the access end for both\nPTR_TO_TP_BUFFER and PTR_TO_BUF.",
  "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-2026-68462"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/314bd592085c0720ef519f6edbc5f41440ff78d4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fd4cfa8c8f9a17cdec0539334d28754bc1d8a5d9"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-15T06:18:39Z"
  }
}