CVE-2026-89780: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-2f6m-7f8f-p7hp
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Advisory Summary

CVE-2026-89780 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-2026-89780 at a Glance

CVE Identifier CVE-2026-89780
GHSA Identifier GHSA-2f6m-7f8f-p7hp
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-2026-89780

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-2026-89780, 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: restore skb->dev on deaggregated frames rmnet_map_deaggregate() allocates each sub-frame with alloc_skb() and leaves skb->dev NULL. __rmnet_map_ingress_handler() assigns skb->dev = ep->egress_dev only on the data path, but a MAP command frame is dispatched to rmnet_map_command() before that, so rmnet_map_send_ack() runs netif_tx_lock(skb->dev) on a NULL device. An unprivileged user reaches this by unsharing a user+net namespace, creating an rmnet link over a tap device with INGRESS_DEAGGREGATION and INGRESS_MAP_COMMANDS, and writing an aggregated frame carrying a flow-control command to the tap fd. Restore the assignment dropped by 378e25357ac7, so every skb leaving rmnet_map_deaggregate() has a valid device. BUG: KASAN: null-ptr-deref in _raw_spin_lock (kernel/locking/spinlock.c:158) Write of size 4 at addr 00000000000004b4 by task exploit/144 Call Trace: _raw_spin_lock (kernel/locking/spinlock.c:158) netif_tx_lock (net/sched/sch_generic.c:497) rmnet_map_command (drivers/net/ethernet/qualcomm/rmnet/rmnet_map_command.c:67) rmnet_rx_handler (drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c:125) __netif_receive_skb_core.constprop.0 (net/core/dev.c:6103) ... __netif_receive_skb_one_core (net/core/dev.c:6214) netif_receive_skb (net/core/dev.c:6474) tun_get_user (drivers/net/tun.c:1966) tun_chr_write_iter (drivers/net/tun.c:2012) vfs_write (fs/read_write.c:687) ksys_write (fs/read_write.c:739) do_syscall_64 (arch/x86/entry/syscall_64.c:94) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) Kernel panic - not syncing: Fatal exception in interrupt

References

NVD — CVE-2026-89780 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89780
git.kernel.org/stable/c/200460a079... WEB
https://git.kernel.org/stable/c/200460a0793dc6af97d3b36d92ac245350ac26fc
git.kernel.org/stable/c/4bcef54e4a... WEB
https://git.kernel.org/stable/c/4bcef54e4a3355a62d9ad90729fe563435ec76c3
git.kernel.org/stable/c/5aaa7409c1... WEB
https://git.kernel.org/stable/c/5aaa7409c1b4ca4c60d66e2afa99703bf4eb7ddd
git.kernel.org/stable/c/7abe769e72... WEB
https://git.kernel.org/stable/c/7abe769e72c792e5f9eb273813eb3ecd8389854c
git.kernel.org/stable/c/9b78ab84dd... WEB
https://git.kernel.org/stable/c/9b78ab84ddf97c06a8567edb62b6c0fd582f9a62
git.kernel.org/stable/c/9d18c6c6cd... WEB
https://git.kernel.org/stable/c/9d18c6c6cd1666b2cb7915cad052e22abf520997
git.kernel.org/stable/c/a66734a1c5... WEB
https://git.kernel.org/stable/c/a66734a1c5e36525ea07e9f4547fddc51e916de3
git.kernel.org/stable/c/b14c22c31d... WEB
https://git.kernel.org/stable/c/b14c22c31d9e30f38ea1693ac06d318f32258f5d

Frequently Asked Questions

What is CVE-2026-89780?
CVE-2026-89780 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-2026-89780?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-89780?
CVE-2026-89780 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89780?
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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  "schema_version" : "1.4.0",
  "id" : "GHSA-2f6m-7f8f-p7hp",
  "modified" : "2026-09-16T09:30:30Z",
  "published" : "2026-09-16T09:30:30Z",
  "aliases" : [ "CVE-2026-89780" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qualcomm: rmnet: restore skb->dev on deaggregated frames\n\nrmnet_map_deaggregate() allocates each sub-frame with alloc_skb() and\nleaves skb->dev NULL. __rmnet_map_ingress_handler() assigns\nskb->dev = ep->egress_dev only on the data path, but a MAP command frame\nis dispatched to rmnet_map_command() before that, so rmnet_map_send_ack()\nruns netif_tx_lock(skb->dev) on a NULL device. An unprivileged user\nreaches this by unsharing a user+net namespace, creating an rmnet link\nover a tap device with INGRESS_DEAGGREGATION and INGRESS_MAP_COMMANDS,\nand writing an aggregated frame carrying a flow-control command to the\ntap fd.\n\nRestore the assignment dropped by 378e25357ac7, so every skb leaving\nrmnet_map_deaggregate() has a valid device.\n\n  BUG: KASAN: null-ptr-deref in _raw_spin_lock (kernel/locking/spinlock.c:158)\n  Write of size 4 at addr 00000000000004b4 by task exploit/144\n  Call Trace:\n   _raw_spin_lock (kernel/locking/spinlock.c:158)\n   netif_tx_lock (net/sched/sch_generic.c:497)\n   rmnet_map_command (drivers/net/ethernet/qualcomm/rmnet/rmnet_map_command.c:67)\n   rmnet_rx_handler (drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c:125)\n   __netif_receive_skb_core.constprop.0 (net/core/dev.c:6103)\n   ...\n   __netif_receive_skb_one_core (net/core/dev.c:6214)\n   netif_receive_skb (net/core/dev.c:6474)\n   tun_get_user (drivers/net/tun.c:1966)\n   tun_chr_write_iter (drivers/net/tun.c:2012)\n   vfs_write (fs/read_write.c:687)\n   ksys_write (fs/read_write.c:739)\n   do_syscall_64 (arch/x86/entry/syscall_64.c:94)\n   entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n  Kernel panic - not syncing: Fatal exception in interrupt",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89780"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/200460a0793dc6af97d3b36d92ac245350ac26fc"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4bcef54e4a3355a62d9ad90729fe563435ec76c3"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5aaa7409c1b4ca4c60d66e2afa99703bf4eb7ddd"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7abe769e72c792e5f9eb273813eb3ecd8389854c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9b78ab84ddf97c06a8567edb62b6c0fd582f9a62"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9d18c6c6cd1666b2cb7915cad052e22abf520997"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a66734a1c5e36525ea07e9f4547fddc51e916de3"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b14c22c31d9e30f38ea1693ac06d318f32258f5d"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-16T09:17:08Z"
  }
}