CVE-2026-98629: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-3xrv-9p49-wqm3
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Advisory Summary

CVE-2026-98629 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-2026-98629 at a Glance

CVE Identifier CVE-2026-98629
GHSA Identifier GHSA-3xrv-9p49-wqm3
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-2026-98629

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-2026-98629, 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/sched: cls_u32: fix manual hash table handle IDR aliasing A u32 hash table created with an explicit handle ('tc filter add ... handle 801: u32 divisor N') keys its IDR entry on the raw handle, while the destroy paths free it under handle2id(handle). The two key domains disagree for handles in the 0x800..0xFFF htid range: handle2id() folds them back into the auto-allocated id space (1..0x7FF). A manual table therefore leaves its raw-keyed IDR entry unreachable on delete (a permanent leak), and its delete can drop the idr entry of an unrelated live auto table. A later auto allocation can then hand out a handle that aliases the live manual table; u32_lookup_ht() first-match routes lookups and TCA_U32_LINK for that htid to the wrong table. Key the divisor-path alloc on handle2id(handle) so allocation and removal share one key domain. A manual handle that maps onto an id already in use is rejected with -ENOSPC, and auto allocation skips ids held by live manual tables. Conditions to recreate: ip link add test0 type dummy tc qdisc add dev test0 clsact tc filter add dev test0 ingress protocol ip pref 1 \ handle 801: u32 divisor 16 tc filter add dev test0 ingress protocol ip pref 2 u32 divisor 16 tc -d filter show dev test0 ingress | grep 'fh 801:' # unpatched: two live tables with handle 0x80100000 (the pref 2 root # hnode is auto-allocated id 1); patched: the auto hnode takes id 2. Also tested with a poc with a live u32 table on the block, add/delete a manual table 'handle 901: u32 divisor 1' twice; unpatched, the re-add fails with -ENOSPC because the raw key leaked on the first delete.

References

NVD — CVE-2026-98629 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98629
git.kernel.org/stable/c/0a5f5d9e94... WEB
https://git.kernel.org/stable/c/0a5f5d9e94dead312d32c366b917c64e552b72f7
git.kernel.org/stable/c/0fac292d93... WEB
https://git.kernel.org/stable/c/0fac292d93fdb313099e98cce928b3a524c92c94
git.kernel.org/stable/c/21fc07924e... WEB
https://git.kernel.org/stable/c/21fc07924e996e1e661268ca269c86b8d59d25b3
git.kernel.org/stable/c/2f898f9ec7... WEB
https://git.kernel.org/stable/c/2f898f9ec7c73c5697ee462681e7ea6984ee1f3d
git.kernel.org/stable/c/54a454c5e4... WEB
https://git.kernel.org/stable/c/54a454c5e41f5e2cb70c8163140ce095c5d5eefd
git.kernel.org/stable/c/f6696481ee... WEB
https://git.kernel.org/stable/c/f6696481eedfd5752b4b56eed715d0b0fe48b9c5

Frequently Asked Questions

What is CVE-2026-98629?
CVE-2026-98629 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-2026-98629?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98629?
CVE-2026-98629 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98629?
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-3xrv-9p49-wqm3",
  "modified" : "2026-10-18T18:31:57Z",
  "published" : "2026-10-18T18:31:57Z",
  "aliases" : [ "CVE-2026-98629" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: cls_u32: fix manual hash table handle IDR aliasing\n\nA u32 hash table created with an explicit handle ('tc filter add ...\nhandle 801: u32 divisor N') keys its IDR entry on the raw handle, while\nthe destroy paths free it under handle2id(handle). The two key domains\ndisagree for handles in the 0x800..0xFFF htid range:\nhandle2id() folds them back into the auto-allocated id space (1..0x7FF).\n\nA manual table therefore leaves its raw-keyed IDR entry unreachable on\ndelete (a permanent leak), and its delete can drop the idr entry of an\nunrelated live auto table. A later auto allocation can then hand out a\nhandle that aliases the live manual table; u32_lookup_ht() first-match\nroutes lookups and TCA_U32_LINK for that htid to the wrong table.\n\nKey the divisor-path alloc on handle2id(handle) so allocation and\nremoval share one key domain. A manual handle that maps onto an id\nalready in use is rejected with -ENOSPC, and auto allocation skips ids\nheld by live manual tables.\n\nConditions to recreate:\n  ip link add test0 type dummy\n  tc qdisc add dev test0 clsact\n  tc filter add dev test0 ingress protocol ip pref 1 \\\n          handle 801: u32 divisor 16\n  tc filter add dev test0 ingress protocol ip pref 2 u32 divisor 16\n  tc -d filter show dev test0 ingress | grep 'fh 801:'\n  # unpatched: two live tables with handle 0x80100000 (the pref 2 root\n  # hnode is auto-allocated id 1); patched: the auto hnode takes id 2.\n\nAlso tested with a poc with a live u32 table on the block, add/delete a manual\ntable 'handle 901: u32 divisor 1' twice; unpatched, the re-add fails with\n-ENOSPC because the raw key leaked on the first delete.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98629"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0a5f5d9e94dead312d32c366b917c64e552b72f7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0fac292d93fdb313099e98cce928b3a524c92c94"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/21fc07924e996e1e661268ca269c86b8d59d25b3"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2f898f9ec7c73c5697ee462681e7ea6984ee1f3d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/54a454c5e41f5e2cb70c8163140ce095c5d5eefd"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f6696481eedfd5752b4b56eed715d0b0fe48b9c5"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-18T16:17:15Z"
  }
}