CVE-2026-64572: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-q235-77fh-m2c6
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Advisory Summary

CVE-2026-64572 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-2026-64572 at a Glance

CVE Identifier CVE-2026-64572
GHSA Identifier GHSA-q235-77fh-m2c6
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-2026-64572

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-2026-64572, 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: fib: free fib_alias with kfree_rcu() on insert error path fib_table_insert() publishes new_fa into the leaf's fa_list with fib_insert_alias() before calling the fib entry notifiers. When a notifier fails, the error path removes new_fa with fib_remove_alias() (hlist_del_rcu) and frees it right away with kmem_cache_free(). fib_table_lookup() walks that list under rcu_read_lock() only, so a concurrent lookup that already reached new_fa keeps reading it after the free: BUG: KASAN: slab-use-after-free in fib_table_lookup (net/ipv4/fib_trie.c:1601) Read of size 1 at addr ffff88810676d4eb by task exploit/297 Call Trace: fib_table_lookup (net/ipv4/fib_trie.c:1601) ip_route_output_key_hash_rcu (net/ipv4/route.c:2814) ip_route_output_key_hash (net/ipv4/route.c:2705) __ip4_datagram_connect (net/ipv4/datagram.c:49) udp_connect (net/ipv4/udp.c:2144) __sys_connect (net/socket.c:2167) __x64_sys_connect (net/socket.c:2173) do_syscall_64 entry_SYSCALL_64_after_hwframe which belongs to the cache ip_fib_alias of size 56 Triggering the error path needs CAP_NET_ADMIN and a registered fib notifier that can reject a route; a netdevsim device whose IPv4 FIB resource is exhausted is enough. Free new_fa with alias_free_mem_rcu(), as fib_table_delete() already does for a fib_alias removed from the trie.

References

NVD — CVE-2026-64572 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64572
git.kernel.org/stable/c/6429c9cfd9... WEB
https://git.kernel.org/stable/c/6429c9cfd941e62acd7bb0bc64d631574d4c3b2a
git.kernel.org/stable/c/8150b5365f... WEB
https://git.kernel.org/stable/c/8150b5365f026e72250cacc527ea00be30f40105
git.kernel.org/stable/c/9d0778571d... WEB
https://git.kernel.org/stable/c/9d0778571def598c31e84a38ae5a7ebc6f65e6d8
git.kernel.org/stable/c/b8d2ea75c7... WEB
https://git.kernel.org/stable/c/b8d2ea75c76abcd0d72679c2f488271f573e32fb
git.kernel.org/stable/c/bb03350f97... WEB
https://git.kernel.org/stable/c/bb03350f974aec352b660d032a1d283eb462165a
git.kernel.org/stable/c/cb8be318b4... WEB
https://git.kernel.org/stable/c/cb8be318b4432abd88d3172ec157330f27a5f7a7
git.kernel.org/stable/c/d007056868... WEB
https://git.kernel.org/stable/c/d007056868723de9c0cc3f5ffaad47a8d468b9a4
git.kernel.org/stable/c/f2f152e94a... WEB
https://git.kernel.org/stable/c/f2f152e94a67bc746afaf05a1b2702c195553112

Frequently Asked Questions

What is CVE-2026-64572?
CVE-2026-64572 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-2026-64572?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-64572?
CVE-2026-64572 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-64572?
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-q235-77fh-m2c6",
  "modified" : "2026-08-19T18:32:04Z",
  "published" : "2026-08-05T09:31:17Z",
  "aliases" : [ "CVE-2026-64572" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: fib: free fib_alias with kfree_rcu() on insert error path\n\nfib_table_insert() publishes new_fa into the leaf's fa_list with\nfib_insert_alias() before calling the fib entry notifiers. When a\nnotifier fails, the error path removes new_fa with fib_remove_alias()\n(hlist_del_rcu) and frees it right away with kmem_cache_free().\n\nfib_table_lookup() walks that list under rcu_read_lock() only, so a\nconcurrent lookup that already reached new_fa keeps reading it after the\nfree:\n\n BUG: KASAN: slab-use-after-free in fib_table_lookup (net/ipv4/fib_trie.c:1601)\n Read of size 1 at addr ffff88810676d4eb by task exploit/297\n Call Trace:\n  fib_table_lookup (net/ipv4/fib_trie.c:1601)\n  ip_route_output_key_hash_rcu (net/ipv4/route.c:2814)\n  ip_route_output_key_hash (net/ipv4/route.c:2705)\n  __ip4_datagram_connect (net/ipv4/datagram.c:49)\n  udp_connect (net/ipv4/udp.c:2144)\n  __sys_connect (net/socket.c:2167)\n  __x64_sys_connect (net/socket.c:2173)\n  do_syscall_64\n  entry_SYSCALL_64_after_hwframe\n which belongs to the cache ip_fib_alias of size 56\n\nTriggering the error path needs CAP_NET_ADMIN and a registered fib\nnotifier that can reject a route; a netdevsim device whose IPv4 FIB\nresource is exhausted is enough.\n\nFree new_fa with alias_free_mem_rcu(), as fib_table_delete() already\ndoes for a fib_alias removed from the trie.",
  "severity" : [ ],
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    "url" : "https://git.kernel.org/stable/c/f2f152e94a67bc746afaf05a1b2702c195553112"
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  "database_specific" : {
    "cwe_ids" : [ ],
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    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-05T08:16:36Z"
  }
}