CVE-2026-46294: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-c9hh-9962-q529
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CVSS 7.8
CWE-787
Published
Advisory Summary

CVE-2026-46294 is a HIGH (CVSS 7.8) security vulnerability vulnerability (CWE-787: Out-of-bounds Write) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product writes data past the end, or before the beginning, of the intended buffer.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-46294 at a Glance

CVE Identifier CVE-2026-46294
GHSA Identifier GHSA-c9hh-9962-q529
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification CWE-787: Out-of-bounds Write
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-2026-46294

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-2026-46294, 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 CWE-787: Out-of-bounds Write, where the product writes 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

In the Linux kernel, the following vulnerability has been resolved: dm: fix a buffer overflow in ioctl processing Tony Asleson (using Claude) found a buffer overflow in dm-ioctl in the function retrieve_status: 1. The code in retrieve_status checks that the output string fits into the output buffer and writes the output string there 2. Then, the code aligns the "outptr" variable to the next 8-byte boundary: outptr = align_ptr(outptr); 3. The alignment doesn't check overflow, so outptr could point past the buffer end 4. The "for" loop is iterated again, it executes: remaining = len - (outptr - outbuf); 5. If "outptr" points past "outbuf + len", the arithmetics wraps around and the variable "remaining" contains unusually high number 6. With "remaining" being high, the code writes more data past the end of the buffer Luckily, this bug has no security implications because: 1. Only root can issue device mapper ioctls 2. The commonly used libraries that communicate with device mapper (libdevmapper and devicemapper-rs) use buffer size that is aligned to 8 bytes - thus, "outptr = align_ptr(outptr)" can't overshoot the input buffer and the bug can't happen accidentally

References

NVD — CVE-2026-46294 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46294
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-784472.html
git.kernel.org/stable/c/2fa49cc884... WEB
https://git.kernel.org/stable/c/2fa49cc884f6496a915c35621ba4da35649bf159
git.kernel.org/stable/c/448ee8fb79... WEB
https://git.kernel.org/stable/c/448ee8fb79c26a26599ffa4b2adeb4322d3d3d8c
git.kernel.org/stable/c/526ff9126a... WEB
https://git.kernel.org/stable/c/526ff9126a0ae087b65726e1faf31114c718020d
git.kernel.org/stable/c/5af6a879e9... WEB
https://git.kernel.org/stable/c/5af6a879e915ae7bcd83695c316ebb32e1c61bc2
git.kernel.org/stable/c/8daa6c708e... WEB
https://git.kernel.org/stable/c/8daa6c708ef524089ae43f2aed9190acb26d7df8
git.kernel.org/stable/c/c8c5311237... WEB
https://git.kernel.org/stable/c/c8c5311237448f6ffeecc9aec2362e3692623668
git.kernel.org/stable/c/d271631023... WEB
https://git.kernel.org/stable/c/d271631023cbe1cbe7c31a0275ab797883be6e0a
git.kernel.org/stable/c/f0b0b09d98... WEB
https://git.kernel.org/stable/c/f0b0b09d9840838ae77ccdd6a62de0daef4e6e0a

Frequently Asked Questions

What is CVE-2026-46294?
CVE-2026-46294 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-787: Out-of-bounds Write.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-46294?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-46294?
CVE-2026-46294 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-2026-46294?
CVE-2026-46294 is classified under CWE-787: Out-of-bounds Write (The product writes data past the end, or before the beginning, of the intended buffer.).
How can I check Maven dependencies for CVE-2026-46294?
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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  "id" : "GHSA-c9hh-9962-q529",
  "modified" : "2026-10-15T03:36:07Z",
  "published" : "2026-06-08T18:31:52Z",
  "aliases" : [ "CVE-2026-46294" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ndm: fix a buffer overflow in ioctl processing\n\nTony Asleson (using Claude) found a buffer overflow in dm-ioctl in the\nfunction retrieve_status:\n\n1. The code in retrieve_status checks that the output string fits into\n   the output buffer and writes the output string there\n2. Then, the code aligns the \"outptr\" variable to the next 8-byte\n   boundary:\n\toutptr = align_ptr(outptr);\n3. The alignment doesn't check overflow, so outptr could point past the\n   buffer end\n4. The \"for\" loop is iterated again, it executes:\n\tremaining = len - (outptr - outbuf);\n5. If \"outptr\" points past \"outbuf + len\", the arithmetics wraps around\n   and the variable \"remaining\" contains unusually high number\n6. With \"remaining\" being high, the code writes more data past the end of\n   the buffer\n\nLuckily, this bug has no security implications because:\n1. Only root can issue device mapper ioctls\n2. The commonly used libraries that communicate with device mapper\n   (libdevmapper and devicemapper-rs) use buffer size that is aligned to\n   8 bytes - thus, \"outptr = align_ptr(outptr)\" can't overshoot the input\n   buffer and the bug can't happen accidentally",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
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    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
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    "url" : "https://git.kernel.org/stable/c/f0b0b09d9840838ae77ccdd6a62de0daef4e6e0a"
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  "database_specific" : {
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    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-08T17:16:47Z"
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}