CVE-2026-97602: Software Security Vulnerability Vulnerability

HIGH

Advisory Identifier: GHSA-82gw-3rjg-qh2p

CVSS 7.8

Published 2026-09-25

Advisory Summary

CVE-2026-97602 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-97602 at a Glance

CVE Identifier CVE-2026-97602

GHSA Identifier GHSA-82gw-3rjg-qh2p

Severity HIGH

CVSS v3.1 Base Score 7.8

CWE Classification General Security Weakness

Affected Product Software

Package Ecosystem Maven

Published Date 2026-09-25

Last Updated 2026-10-03

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-2026-97602

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-2026-97602, 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: inet: frags: invalidate queues before flushing them fqdir_pre_exit() flushes the skbs from incomplete queues without changing their completion state. A fragment which found a queue before high_thresh was cleared can then acquire the queue lock and reuse stale reassembly metadata. A queue concurrently killed after fqdir->dead is set can instead become INET_FRAG_COMPLETE|INET_FRAG_HASH_DEAD while still holding its old skbs; skipping it because it is complete leaves those references behind until asynchronous fqdir teardown. For IPv6, stale metadata can make ip6_frag_reasm() use the old nhoffset with a new skb and access memory out of bounds. The resulting heap corruption can be leveraged for local privilege escalation when unprivileged network namespaces are available. Unflushed fragments can also keep conntrack references alive after the conntrack per-net cleanup point. Kill each incomplete queue, then flush every queue still owned by the dying rhashtable. HASH_DEAD identifies that ownership, while complete queues without it are already owned by another destroy path and must be left alone. Releasing a timer reference removed by inet_frag_kill() is deferred to inet_frag_putn(), after the queue lock is dropped. KASAN report: BUG: KASAN: slab-out-of-bounds in ipv6_frag_rcv (net/ipv6/reassembly.c:289 (discriminator 2) net/ipv6/reassembly.c:229 (discriminator 2) net/ipv6/reassembly.c:391 (discriminator 2)) Write of size 1 at addr ff110001039c6e00 by task poc/771 Call Trace: ? ipv6_frag_rcv (net/ipv6/reassembly.c:289 (discriminator 2) net/ipv6/reassembly.c:229 (discriminator 2) net/ipv6/reassembly.c:391 (discriminator 2)) ipv6_frag_rcv (net/ipv6/reassembly.c:289 (discriminator 2) net/ipv6/reassembly.c:229 (discriminator 2) net/ipv6/reassembly.c:391 (discriminator 2)) ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:479 (discriminator 5)) ip6_input_finish (net/ipv6/ip6_input.c:534) ipv6_rcv (include/net/dst.h:480 (discriminator 3) net/ipv6/ip6_input.c:119 (discriminator 3) net/ipv6/ip6_input.c:109 (discriminator 3) include/linux/netfilter.h:325 (discriminator 3) include/linux/netfilter.h:319 (discriminator 3) net/ipv6/ip6_input.c:351 (discriminator 3)) packet_sendmsg (net/packet/af_packet.c:3110 net/packet/af_packet.c:3142) __x64_sys_sendmmsg (net/socket.c:2883 net/socket.c:2880 net/socket.c:2880) The buggy address belongs to the object at ff110001039c6b40 which belongs to the cache skbuff_small_head of size 704 The buggy address is located 0 bytes to the right of allocated 704-byte region [ff110001039c6b40, ff110001039c6e00) BUG: KASAN: slab-out-of-bounds in ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:423 (discriminator 1)) Read of size 1 at addr ff110001039c6e08 by task poc/771 Call Trace: ? ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:423 (discriminator 1)) ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:423 (discriminator 1)) ip6_input_finish (net/ipv6/ip6_input.c:534) ipv6_rcv (include/net/dst.h:480 (discriminator 3) net/ipv6/ip6_input.c:119 (discriminator 3) net/ipv6/ip6_input.c:109 (discriminator 3) include/linux/netfilter.h:325 (discriminator 3) include/linux/netfilter.h:319 (discriminator 3) net/ipv6/ip6_input.c:351 (discriminator 3)) packet_sendmsg (net/packet/af_packet.c:3110 net/packet/af_packet.c:3142) __x64_sys_sendmmsg (net/socket.c:2883 net/socket.c:2880 net/socket.c:2880) packet_sendmsg (net/packet/af_packet.c:2959 net/packet/af_packet.c:3053 net/packet/af_packet.c:3142) __x64_sys_sendmmsg (net/socket.c:2883 net/socket.c:2880 net/socket.c:2880) The buggy address belongs to the object at ff110001039c6b40 which belongs to the cache skbuff_small_head of size 704 The buggy address is located 8 bytes to the right of allocated 704-byte region [ff110001039c6b40, ff110001039c6e00)

References

NVD — CVE-2026-97602 NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-97602

git.kernel.org/stable/c/7cb5f4643a... WEB

https://git.kernel.org/stable/c/7cb5f4643a7fcdbfbee1fad3cdfc678add62d378

git.kernel.org/stable/c/b824476c56... WEB

https://git.kernel.org/stable/c/b824476c56a153934c67c9e0f873e1fd967743d6

git.kernel.org/stable/c/b9d77f1652... WEB

https://git.kernel.org/stable/c/b9d77f1652e79e58eac48430d0431c329137efcc

git.kernel.org/stable/c/bf3d6c44c8... WEB

https://git.kernel.org/stable/c/bf3d6c44c84c57e8a4bb7f40ad95b64f9b0198ba

git.kernel.org/stable/c/ff83367cda... WEB

https://git.kernel.org/stable/c/ff83367cda8eefbd62007ef1dff4f8104226d18a

Frequently Asked Questions

What is CVE-2026-97602?

CVE-2026-97602 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-2026-97602?

Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.

What is the CVSS score of CVE-2026-97602?

CVE-2026-97602 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-2026-97602?

CVE-2026-97602 is classified under General Security Weakness.

How can I check Maven dependencies for CVE-2026-97602?

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-82gw-3rjg-qh2p",
  "modified" : "2026-10-03T12:31:18Z",
  "published" : "2026-09-25T12:31:26Z",
  "aliases" : [ "CVE-2026-97602" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ninet: frags: invalidate queues before flushing them\n\nfqdir_pre_exit() flushes the skbs from incomplete queues without\nchanging their completion state. A fragment which found a queue before\nhigh_thresh was cleared can then acquire the queue lock and reuse stale\nreassembly metadata. A queue concurrently killed after fqdir->dead is\nset can instead become INET_FRAG_COMPLETE|INET_FRAG_HASH_DEAD while\nstill holding its old skbs; skipping it because it is complete leaves\nthose references behind until asynchronous fqdir teardown.\n\nFor IPv6, stale metadata can make ip6_frag_reasm() use the old\nnhoffset with a new skb and access memory out of bounds. The resulting\nheap corruption can be leveraged for local privilege escalation when\nunprivileged network namespaces are available. Unflushed fragments can\nalso keep conntrack references alive after the conntrack per-net\ncleanup point.\n\nKill each incomplete queue, then flush every queue still owned by the\ndying rhashtable. HASH_DEAD identifies that ownership, while complete\nqueues without it are already owned by another destroy path and must be\nleft alone. Releasing a timer reference removed by inet_frag_kill() is\ndeferred to inet_frag_putn(), after the queue lock is dropped.\n\nKASAN report:\n\n  BUG: KASAN: slab-out-of-bounds in ipv6_frag_rcv (net/ipv6/reassembly.c:289 (discriminator 2) net/ipv6/reassembly.c:229 (discriminator 2) net/ipv6/reassembly.c:391 (discriminator 2))\n  Write of size 1 at addr ff110001039c6e00 by task poc/771\n  Call Trace:\n  ? ipv6_frag_rcv (net/ipv6/reassembly.c:289 (discriminator 2) net/ipv6/reassembly.c:229 (discriminator 2) net/ipv6/reassembly.c:391 (discriminator 2))\n  ipv6_frag_rcv (net/ipv6/reassembly.c:289 (discriminator 2) net/ipv6/reassembly.c:229 (discriminator 2) net/ipv6/reassembly.c:391 (discriminator 2))\n  ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:479 (discriminator 5))\n  ip6_input_finish (net/ipv6/ip6_input.c:534)\n  ipv6_rcv (include/net/dst.h:480 (discriminator 3) net/ipv6/ip6_input.c:119 (discriminator 3) net/ipv6/ip6_input.c:109 (discriminator 3) include/linux/netfilter.h:325 (discriminator 3) include/linux/netfilter.h:319 (discriminator 3) net/ipv6/ip6_input.c:351 (discriminator 3))\n  packet_sendmsg (net/packet/af_packet.c:3110 net/packet/af_packet.c:3142)\n  __x64_sys_sendmmsg (net/socket.c:2883 net/socket.c:2880 net/socket.c:2880)\n  The buggy address belongs to the object at ff110001039c6b40\n  which belongs to the cache skbuff_small_head of size 704\n  The buggy address is located 0 bytes to the right of\n  allocated 704-byte region [ff110001039c6b40, ff110001039c6e00)\n\n  BUG: KASAN: slab-out-of-bounds in ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:423 (discriminator 1))\n  Read of size 1 at addr ff110001039c6e08 by task poc/771\n  Call Trace:\n  ? ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:423 (discriminator 1))\n  ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:423 (discriminator 1))\n  ip6_input_finish (net/ipv6/ip6_input.c:534)\n  ipv6_rcv (include/net/dst.h:480 (discriminator 3) net/ipv6/ip6_input.c:119 (discriminator 3) net/ipv6/ip6_input.c:109 (discriminator 3) include/linux/netfilter.h:325 (discriminator 3) include/linux/netfilter.h:319 (discriminator 3) net/ipv6/ip6_input.c:351 (discriminator 3))\n  packet_sendmsg (net/packet/af_packet.c:3110 net/packet/af_packet.c:3142)\n  __x64_sys_sendmmsg (net/socket.c:2883 net/socket.c:2880 net/socket.c:2880)\n  packet_sendmsg (net/packet/af_packet.c:2959 net/packet/af_packet.c:3053 net/packet/af_packet.c:3142)\n  __x64_sys_sendmmsg (net/socket.c:2883 net/socket.c:2880 net/socket.c:2880)\n  The buggy address belongs to the object at ff110001039c6b40\n  which belongs to the cache skbuff_small_head of size 704\n  The buggy address is located 8 bytes to the right of\n  allocated 704-byte region [ff110001039c6b40, ff110001039c6e00)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-97602"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7cb5f4643a7fcdbfbee1fad3cdfc678add62d378"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b824476c56a153934c67c9e0f873e1fd967743d6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b9d77f1652e79e58eac48430d0431c329137efcc"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/bf3d6c44c84c57e8a4bb7f40ad95b64f9b0198ba"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ff83367cda8eefbd62007ef1dff4f8104226d18a"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-25T11:17:11Z"
  }
}

CVSS V3

7.8 HIGH