CVE-2026-31515: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-9285-5jpf-mwr6
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CVSS 5.5
CWE-476
Published
Advisory Summary

CVE-2026-31515 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (CWE-476: NULL Pointer Dereference) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product dereferences a pointer that it expects to be valid but is null.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-31515 at a Glance

CVE Identifier CVE-2026-31515
GHSA Identifier GHSA-9285-5jpf-mwr6
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-476: NULL Pointer Dereference
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.5

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:N/I:N/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 None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-31515

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-2026-31515, 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-476: NULL Pointer Dereference, where the product dereferences a pointer that it expects to be valid but is null. 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: af_key: validate families in pfkey_send_migrate() syzbot was able to trigger a crash in skb_put() [1] Issue is that pfkey_send_migrate() does not check old/new families, and that set_ipsecrequest() @family argument was truncated, thus possibly overfilling the skb. Validate families early, do not wait set_ipsecrequest(). [1] skbuff: skb_over_panic: text:ffffffff8a752120 len:392 put:16 head:ffff88802a4ad040 data:ffff88802a4ad040 tail:0x188 end:0x180 dev:<NULL> kernel BUG at net/core/skbuff.c:214 ! Call Trace: <TASK> skb_over_panic net/core/skbuff.c:219 [inline] skb_put+0x159/0x210 net/core/skbuff.c:2655 skb_put_zero include/linux/skbuff.h:2788 [inline] set_ipsecrequest net/key/af_key.c:3532 [inline] pfkey_send_migrate+0x1270/0x2e50 net/key/af_key.c:3636 km_migrate+0x155/0x260 net/xfrm/xfrm_state.c:2848 xfrm_migrate+0x2140/0x2450 net/xfrm/xfrm_policy.c:4705 xfrm_do_migrate+0x8ff/0xaa0 net/xfrm/xfrm_user.c:3150

References

NVD — CVE-2026-31515 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-31515
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-457936.html
git.kernel.org/stable/c/7b18692c59... WEB
https://git.kernel.org/stable/c/7b18692c59afb8e5c364c8e3ac01e51dd6b52028
git.kernel.org/stable/c/83f644ea92... WEB
https://git.kernel.org/stable/c/83f644ea92987c100b82d8481ae2230faeed3d34
git.kernel.org/stable/c/8ddf8de7e7... WEB
https://git.kernel.org/stable/c/8ddf8de7e758f6888988467af9ffc8adf589fb16
git.kernel.org/stable/c/d0c5aa8dd3... WEB
https://git.kernel.org/stable/c/d0c5aa8dd38887714f1aad04236a3620b56a5e4e
git.kernel.org/stable/c/d3225e6b9b... WEB
https://git.kernel.org/stable/c/d3225e6b9bd51ec177970a628fe4b11237ce87d5
git.kernel.org/stable/c/e06b596fc4... WEB
https://git.kernel.org/stable/c/e06b596fc4eb01936a2e5dccad17c946d660bab8
git.kernel.org/stable/c/eb2d16a7d5... WEB
https://git.kernel.org/stable/c/eb2d16a7d599dc9d4df391b5e660df9949963786
git.kernel.org/stable/c/ee836e820a... WEB
https://git.kernel.org/stable/c/ee836e820a40e2ca4da8af7310bff92d586772d4

Frequently Asked Questions

What is CVE-2026-31515?
CVE-2026-31515 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-476: NULL Pointer Dereference.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-31515?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-31515?
CVE-2026-31515 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-31515?
CVE-2026-31515 is classified under CWE-476: NULL Pointer Dereference (The product dereferences a pointer that it expects to be valid but is NULL.).
How can I check Maven dependencies for CVE-2026-31515?
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-9285-5jpf-mwr6",
  "modified" : "2026-10-15T03:35:39Z",
  "published" : "2026-04-22T15:31:43Z",
  "aliases" : [ "CVE-2026-31515" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\naf_key: validate families in pfkey_send_migrate()\n\nsyzbot was able to trigger a crash in skb_put() [1]\n\nIssue is that pfkey_send_migrate() does not check old/new families,\nand that set_ipsecrequest() @family argument was truncated,\nthus possibly overfilling the skb.\n\nValidate families early, do not wait set_ipsecrequest().\n\n[1]\n\nskbuff: skb_over_panic: text:ffffffff8a752120 len:392 put:16 head:ffff88802a4ad040 data:ffff88802a4ad040 tail:0x188 end:0x180 dev:<NULL>\n kernel BUG at net/core/skbuff.c:214 !\nCall Trace:\n <TASK>\n  skb_over_panic net/core/skbuff.c:219 [inline]\n  skb_put+0x159/0x210 net/core/skbuff.c:2655\n  skb_put_zero include/linux/skbuff.h:2788 [inline]\n  set_ipsecrequest net/key/af_key.c:3532 [inline]\n  pfkey_send_migrate+0x1270/0x2e50 net/key/af_key.c:3636\n  km_migrate+0x155/0x260 net/xfrm/xfrm_state.c:2848\n  xfrm_migrate+0x2140/0x2450 net/xfrm/xfrm_policy.c:4705\n  xfrm_do_migrate+0x8ff/0xaa0 net/xfrm/xfrm_user.c:3150",
  "severity" : [ {
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    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"
  }, {
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    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"
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  }, {
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    "url" : "https://git.kernel.org/stable/c/8ddf8de7e758f6888988467af9ffc8adf589fb16"
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    "url" : "https://git.kernel.org/stable/c/eb2d16a7d599dc9d4df391b5e660df9949963786"
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    "url" : "https://git.kernel.org/stable/c/ee836e820a40e2ca4da8af7310bff92d586772d4"
  } ],
  "database_specific" : {
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    "severity" : "MODERATE",
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    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-04-22T14:16:50Z"
  }
}