CVE-2026-74694: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-9677-c9p4-rgm3
Share
Published
Advisory Summary

CVE-2026-74694 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-2026-74694 at a Glance

CVE Identifier CVE-2026-74694
GHSA Identifier GHSA-9677-c9p4-rgm3
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-2026-74694

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-2026-74694, 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: net/ncsi: fix heap OOB read in NCSI_CMD_SEND_CMD payload length ncsi_send_cmd_nl() takes the number of bytes to copy from the attacker-controlled ncsi_pkt_hdr.length field of the in-band packet header, while the source buffer is the NCSI_ATTR_DATA netlink attribute whose readable size is nla_len() - sizeof(ncsi_pkt_hdr). The two length sources are never cross-checked: only nla_len() >= sizeof(struct ncsi_pkt_hdr) is enforced. With hdr->length set larger than the attribute payload (up to 65535 against at most 2032 readable bytes), ncsi_cmd_handler_oem() copies past the end of the netlink attribute buffer with unsafe_memcpy(), leaking up to ~64KB of kernel heap memory into the transmitted NCSI command packet. The destination skb is sized by the declared payload, so the write side does not overflow - this is a pure OOB read / information leak, reachable with CAP_NET_ADMIN on systems with a registered NCSI device (e.g. OpenBMC on Aspeed BMC SoCs, where NET_NCSI=y is standard). Reject commands whose declared payload extends past the end of the data attribute. The issue was found by the autokbug dynamic kernel fuzzer at Tencent Yunding Lab.

References

NVD — CVE-2026-74694 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74694
git.kernel.org/stable/c/02226af693... WEB
https://git.kernel.org/stable/c/02226af69362758046822840fc6a497f5de33f00
git.kernel.org/stable/c/3a60b5af75... WEB
https://git.kernel.org/stable/c/3a60b5af75abe8e3494ccd074fb4ae6e601a3e55
git.kernel.org/stable/c/43c7d0a691... WEB
https://git.kernel.org/stable/c/43c7d0a6917751ea898ae584d00f24f5deac46d4
git.kernel.org/stable/c/4489b4a178... WEB
https://git.kernel.org/stable/c/4489b4a17892750131e4bef4bc1d3d703c8fb5ba
git.kernel.org/stable/c/67c72b8ef6... WEB
https://git.kernel.org/stable/c/67c72b8ef63d9d9a610546fda30b116638f39745
git.kernel.org/stable/c/afa58b7384... WEB
https://git.kernel.org/stable/c/afa58b7384913c8773d837acdb07b035690ec5d2
git.kernel.org/stable/c/b5231ad0b3... WEB
https://git.kernel.org/stable/c/b5231ad0b376b801ab8cf2962b182cc29deaedb3
git.kernel.org/stable/c/e60afa01d3... WEB
https://git.kernel.org/stable/c/e60afa01d35f8b2671b27ca93309921427144cce

Frequently Asked Questions

What is CVE-2026-74694?
CVE-2026-74694 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-2026-74694?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-74694?
CVE-2026-74694 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74694?
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-9677-c9p4-rgm3",
  "modified" : "2026-08-22T18:30:29Z",
  "published" : "2026-08-22T18:30:29Z",
  "aliases" : [ "CVE-2026-74694" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/ncsi: fix heap OOB read in NCSI_CMD_SEND_CMD payload length\n\nncsi_send_cmd_nl() takes the number of bytes to copy from the\nattacker-controlled ncsi_pkt_hdr.length field of the in-band packet\nheader, while the source buffer is the NCSI_ATTR_DATA netlink\nattribute whose readable size is nla_len() - sizeof(ncsi_pkt_hdr).\nThe two length sources are never cross-checked: only\nnla_len() >= sizeof(struct ncsi_pkt_hdr) is enforced.\n\nWith hdr->length set larger than the attribute payload (up to 65535\nagainst at most 2032 readable bytes), ncsi_cmd_handler_oem() copies\npast the end of the netlink attribute buffer with unsafe_memcpy(),\nleaking up to ~64KB of kernel heap memory into the transmitted NCSI\ncommand packet. The destination skb is sized by the declared payload,\nso the write side does not overflow - this is a pure OOB read /\ninformation leak, reachable with CAP_NET_ADMIN on systems with a\nregistered NCSI device (e.g. OpenBMC on Aspeed BMC SoCs, where\nNET_NCSI=y is standard).\n\nReject commands whose declared payload extends past the end of the\ndata attribute.\n\nThe issue was found by the autokbug dynamic kernel fuzzer at Tencent\nYunding Lab.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-74694"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/02226af69362758046822840fc6a497f5de33f00"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3a60b5af75abe8e3494ccd074fb4ae6e601a3e55"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/43c7d0a6917751ea898ae584d00f24f5deac46d4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4489b4a17892750131e4bef4bc1d3d703c8fb5ba"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/67c72b8ef63d9d9a610546fda30b116638f39745"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/afa58b7384913c8773d837acdb07b035690ec5d2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b5231ad0b376b801ab8cf2962b182cc29deaedb3"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e60afa01d35f8b2671b27ca93309921427144cce"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-22T16:16:43Z"
  }
}