CVE-2026-74657: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-9gv9-cg8w-rc25
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Advisory Summary

CVE-2026-74657 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-2026-74657 at a Glance

CVE Identifier CVE-2026-74657
GHSA Identifier GHSA-9gv9-cg8w-rc25
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-2026-74657

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-2026-74657, 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: ipv4: Fix fib_nlmsg_size() for RTA_VIA nexthops fib_nlmsg_size() still estimates nexthop space as if every gateway is encoded as an IPv4 RTA_GATEWAY attribute. IPv4 routes can also carry an IPv6 gateway, which fib_nexthop_info() dumps as RTA_VIA. As a result, route notifications can allocate an skb that is too small. fib_dump_info() then fails with -EMSGSIZE and rtmsg_fib() hits the WARN_ON() that marks such failures as a fib_nlmsg_size() bug. With panic_on_warn set, this becomes a kernel panic. Mirror the actual nexthop dump layout in fib_nlmsg_size(): account for IPv6 nexthop gateways dumped as RTA_VIA, for the no-header rtnexthop layout used inside RTA_MULTIPATH, and for RTA_FLOW only when it is actually present.

References

NVD — CVE-2026-74657 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74657
git.kernel.org/stable/c/0f0ca60294... WEB
https://git.kernel.org/stable/c/0f0ca602941d0a81ae9514943ca06c55159c6385
git.kernel.org/stable/c/4a5dfbae51... WEB
https://git.kernel.org/stable/c/4a5dfbae5179f6574695012a980476254df2d295
git.kernel.org/stable/c/4ff9548d84... WEB
https://git.kernel.org/stable/c/4ff9548d84945d2cbf9e4c207288063a200ea397
git.kernel.org/stable/c/5307a53599... WEB
https://git.kernel.org/stable/c/5307a53599fa762c06e475ee4a375252074fd324
git.kernel.org/stable/c/57195f0ab5... WEB
https://git.kernel.org/stable/c/57195f0ab5cfbb5ee0864e5aff15ceb48f5a5e28
git.kernel.org/stable/c/7f80ad373c... WEB
https://git.kernel.org/stable/c/7f80ad373ce4a7af5367ff273cea0f16e91387f3
git.kernel.org/stable/c/9b22f13524... WEB
https://git.kernel.org/stable/c/9b22f13524fa0de0d963bbd3002df6c28bae3395
git.kernel.org/stable/c/a59edda6ed... WEB
https://git.kernel.org/stable/c/a59edda6eda1252340354322d8ab318b2e9052fb

Frequently Asked Questions

What is CVE-2026-74657?
CVE-2026-74657 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-2026-74657?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-74657?
CVE-2026-74657 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74657?
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-9gv9-cg8w-rc25",
  "modified" : "2026-08-27T15:31:31Z",
  "published" : "2026-08-22T18:30:28Z",
  "aliases" : [ "CVE-2026-74657" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: Fix fib_nlmsg_size() for RTA_VIA nexthops\n\nfib_nlmsg_size() still estimates nexthop space as if every gateway is\nencoded as an IPv4 RTA_GATEWAY attribute. IPv4 routes can also carry an\nIPv6 gateway, which fib_nexthop_info() dumps as RTA_VIA.\n\nAs a result, route notifications can allocate an skb that is too small.\nfib_dump_info() then fails with -EMSGSIZE and rtmsg_fib() hits the\nWARN_ON() that marks such failures as a fib_nlmsg_size() bug. With\npanic_on_warn set, this becomes a kernel panic.\n\nMirror the actual nexthop dump layout in fib_nlmsg_size(): account for\nIPv6 nexthop gateways dumped as RTA_VIA, for the no-header rtnexthop\nlayout used inside RTA_MULTIPATH, and for RTA_FLOW only when it is\nactually present.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-74657"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0f0ca602941d0a81ae9514943ca06c55159c6385"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4a5dfbae5179f6574695012a980476254df2d295"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4ff9548d84945d2cbf9e4c207288063a200ea397"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5307a53599fa762c06e475ee4a375252074fd324"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/57195f0ab5cfbb5ee0864e5aff15ceb48f5a5e28"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7f80ad373ce4a7af5367ff273cea0f16e91387f3"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9b22f13524fa0de0d963bbd3002df6c28bae3395"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a59edda6eda1252340354322d8ab318b2e9052fb"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-22T16:16:39Z"
  }
}