CVE-2026-64550: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-wpm4-rcr2-x634
Share
CVSS 7.3
Published
Advisory Summary

CVE-2026-64550 is a HIGH (CVSS 7.3) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-64550 at a Glance

CVE Identifier CVE-2026-64550
GHSA Identifier GHSA-wpm4-rcr2-x634
Severity HIGH
CVSS v3.1 Base Score 7.3
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.3

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:L/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 Low (I:L)
Availability High (A:H)

How to Fix CVE-2026-64550

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-2026-64550, 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: qualcomm: rmnet: validate MAP frame length before ingress parsing When ingress deaggregation is disabled, rmnet_map_ingress_handler() passes the skb straight to __rmnet_map_ingress_handler(), skipping the length validation that rmnet_map_deaggregate() performs on the aggregated path. The parser then dereferences the MAP header and csum header/trailer based on the on-wire pkt_len without checking skb->len, so a short frame is read out of bounds: BUG: KASAN: slab-out-of-bounds in rmnet_map_checksum_downlink_packet Read of size 1 at addr ffff88801118ed00 by task exploit/147 Call Trace: ... rmnet_map_checksum_downlink_packet (drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c:413) __rmnet_map_ingress_handler (drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c:96) rmnet_rx_handler (drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c:129) __netif_receive_skb_core.constprop.0 (net/core/dev.c:6089) netif_receive_skb (net/core/dev.c:6460) tun_get_user (drivers/net/tun.c:1955) tun_chr_write_iter (drivers/net/tun.c:2001) vfs_write (fs/read_write.c:688) ksys_write (fs/read_write.c:740) do_syscall_64 (arch/x86/entry/syscall_64.c:94) ... Factor that validation out of rmnet_map_deaggregate() into rmnet_map_validate_packet_len() and run it on the no-aggregation path too. The MAP header is bounds-checked first, since this path can receive a frame shorter than the header.

References

NVD — CVE-2026-64550 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64550
git.kernel.org/stable/c/00f4c366db... WEB
https://git.kernel.org/stable/c/00f4c366dbca16a40772c3b7ec2d8cba839e9724
git.kernel.org/stable/c/14eb0c9491... WEB
https://git.kernel.org/stable/c/14eb0c9491385d5361a292ea4974aec0e6887299
git.kernel.org/stable/c/1b12612c36... WEB
https://git.kernel.org/stable/c/1b12612c367e4be9b0814c0468e7e687835315b4
git.kernel.org/stable/c/231a8a4b76... WEB
https://git.kernel.org/stable/c/231a8a4b76cb1b1827b3b19d7b3603642f5aaaef
git.kernel.org/stable/c/3868c32443... WEB
https://git.kernel.org/stable/c/3868c3244369ab709a90c9aad7534d406009b824
git.kernel.org/stable/c/a54d76d176... WEB
https://git.kernel.org/stable/c/a54d76d176e50d2fdbd39b7231efe256170339e4
git.kernel.org/stable/c/ed25befc8c... WEB
https://git.kernel.org/stable/c/ed25befc8c36f896b5878f9078faddb67fd7e2d0
git.kernel.org/stable/c/f0f1887a9e... WEB
https://git.kernel.org/stable/c/f0f1887a9e30712a1df03e152dce6fb91344b1f3

Frequently Asked Questions

What is CVE-2026-64550?
CVE-2026-64550 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-2026-64550?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-64550?
CVE-2026-64550 has a CVSS v3.1 base score of 7.3 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H.
What CWE is associated with CVE-2026-64550?
CVE-2026-64550 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-64550?
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-wpm4-rcr2-x634",
  "modified" : "2026-07-30T06:32:34Z",
  "published" : "2026-07-27T21:31:26Z",
  "aliases" : [ "CVE-2026-64550" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qualcomm: rmnet: validate MAP frame length before ingress parsing\n\nWhen ingress deaggregation is disabled, rmnet_map_ingress_handler() passes\nthe skb straight to __rmnet_map_ingress_handler(), skipping the length\nvalidation that rmnet_map_deaggregate() performs on the aggregated path.\nThe parser then dereferences the MAP header and csum header/trailer based on\nthe on-wire pkt_len without checking skb->len, so a short frame is read out\nof bounds:\n\n  BUG: KASAN: slab-out-of-bounds in rmnet_map_checksum_downlink_packet\n  Read of size 1 at addr ffff88801118ed00 by task exploit/147\n  Call Trace:\n   ...\n   rmnet_map_checksum_downlink_packet (drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c:413)\n   __rmnet_map_ingress_handler (drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c:96)\n   rmnet_rx_handler (drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c:129)\n   __netif_receive_skb_core.constprop.0 (net/core/dev.c:6089)\n   netif_receive_skb (net/core/dev.c:6460)\n   tun_get_user (drivers/net/tun.c:1955)\n   tun_chr_write_iter (drivers/net/tun.c:2001)\n   vfs_write (fs/read_write.c:688)\n   ksys_write (fs/read_write.c:740)\n   do_syscall_64 (arch/x86/entry/syscall_64.c:94)\n   ...\n\nFactor that validation out of rmnet_map_deaggregate() into\nrmnet_map_validate_packet_len() and run it on the no-aggregation path too.\nThe MAP header is bounds-checked first, since this path can receive a frame\nshorter than the header.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-64550"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/00f4c366dbca16a40772c3b7ec2d8cba839e9724"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/14eb0c9491385d5361a292ea4974aec0e6887299"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1b12612c367e4be9b0814c0468e7e687835315b4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/231a8a4b76cb1b1827b3b19d7b3603642f5aaaef"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3868c3244369ab709a90c9aad7534d406009b824"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a54d76d176e50d2fdbd39b7231efe256170339e4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ed25befc8c36f896b5878f9078faddb67fd7e2d0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f0f1887a9e30712a1df03e152dce6fb91344b1f3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-27T21:17:07Z"
  }
}