CVE-2026-90173: Software Security Vulnerability Vulnerability

CRITICAL

Advisory Identifier: GHSA-c82p-5m8q-6jh9

CVSS 9.8

Published 2026-09-17

Advisory Summary

CVE-2026-90173 is a CRITICAL (CVSS 9.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-90173 at a Glance

CVE Identifier CVE-2026-90173

GHSA Identifier GHSA-c82p-5m8q-6jh9

Severity CRITICAL

CVSS v3.1 Base Score 9.8

CWE Classification General Security Weakness

Affected Product Software

Package Ecosystem Maven

Published Date 2026-09-17

Last Updated 2026-09-18

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)

Attack Complexity Low (AC:L)

Privileges Required None (PR:N)

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-2026-90173

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-2026-90173, 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: smb: smbdirect: free completion queues with ib_free_cq() smbdirect_connection_destroy_qp() creates the send and receive completion queues with ib_alloc_cq_any(), which for IB_POLL_WORKQUEUE arms an internal completion handler that runs ib_cq_poll_work() on a workqueue. Tearing those CQs down with ib_destroy_cq() frees them without first cancelling that poll work. If the provider posts a completion late -- for example Soft-RoCE (rxe) posting an RNR error from rxe_receiver() after rdma_destroy_qp() -- the handler re-queues ib_cq_poll_work() on the already-freed CQ, and a follow-on access faults in rxe_req_notify_cq(). Use ib_free_cq(), which cancel_work_sync()es the poll work before freeing the CQ, so no completion handler can run against a freed queue. [ 1236.599526] ================================================================== [ 1236.602142] BUG: KASAN: slab-use-after-free in ib_cq_poll_work+0xd0/0x1a0 [ 1236.605524] Read of size 8 at addr ffff888111865800 by task kworker/4:1H/82 [ 1236.609017] [ 1236.609270] CPU: 4 UID: 0 PID: 82 Comm: kworker/4:1H Not tainted 7.2.0-rc3-next-20260717-virtme #110 PREEMPT(lazy) [ 1236.609287] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-debian-1.17.0-1 04/01/2014 [ 1236.609498] Workqueue: ib-comp-wq ib_cq_poll_work [ 1236.609525] Call Trace: [ 1236.609536] <TASK> [ 1236.609545] __dump_stack+0x21/0x60 [ 1236.609562] dump_stack_lvl+0xc2/0x100 [ 1236.609573] print_address_description+0x77/0x200 [ 1236.609587] ? ib_cq_poll_work+0xd0/0x1a0 [ 1236.609597] print_report+0x58/0x70 [ 1236.609607] kasan_report+0x117/0x150 [ 1236.609623] ? ib_cq_poll_work+0xd0/0x1a0 [ 1236.609636] ? process_scheduled_works+0x954/0x1600 [ 1236.609650] ib_cq_poll_work+0xd0/0x1a0 [ 1236.609662] ? process_scheduled_works+0x954/0x1600 [ 1236.609674] process_scheduled_works+0xc22/0x1600 [ 1236.609698] ? __pfx_process_scheduled_works+0x10/0x10 [ 1236.609713] ? __pfx_assign_work+0x10/0x10 [ 1236.609726] ? lock_is_held_type+0x7b/0x110 [ 1236.609741] worker_thread+0x975/0xee0 [ 1236.609757] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 1236.609775] ? __kthread_parkme+0x21e/0x260 [ 1236.609789] kthread+0x3a6/0x490 [ 1236.609800] ? __pfx_worker_thread+0x10/0x10 [ 1236.609809] ? __pfx_kthread+0x10/0x10 [ 1236.609820] ret_from_fork+0x55a/0xa20 [ 1236.609835] ? __pfx_ret_from_fork+0x10/0x10 [ 1236.609850] ? __pfx_kthread+0x10/0x10 [ 1236.609861] ret_from_fork_asm+0x1a/0x30 [ 1236.609880] </TASK> [ 1236.609886] [ 1236.661292] Allocated by task 5076: [ 1236.662640] kasan_save_track+0x3e/0x80 [ 1236.663842] __kasan_kmalloc+0x72/0x90 [ 1236.664763] __kmalloc_noprof+0x2b0/0x5d0 [ 1236.665356] __ib_alloc_cq+0x284/0x1000 [ 1236.666573] __ib_alloc_cq_any+0x23e/0x340 [ 1236.668654] smbdirect_connection_create_qp+0x6f7/0x1070 [ 1236.669757] smbdirect_accept_connect_request+0x500/0x1ca0 [ 1236.672625] smbdirect_listen_rdma_event_handler+0x1655/0x1c50 [ 1236.673930] cma_listen_handler+0x1bf/0x260 [ 1236.674923] cma_cm_event_handler+0x128/0x380 [ 1236.676926] cma_ib_req_handler+0x2d3d/0x4de0 [ 1236.678368] cm_process_work+0xb0/0x530 [ 1236.680454] cm_queue_work_unlock+0xb1/0x230 [ 1236.681673] cm_work_handler+0x969f/0xdca0 [ 1236.682704] process_scheduled_works+0xc22/0x1600 [ 1236.683447] worker_thread+0x975/0xee0 [ 1236.685901] kthread+0x3a6/0x490 [ 1236.688164] ret_from_fork+0x55a/0xa20 [ 1236.689522] ret_from_fork_asm+0x1a/0x30 [ 1236.690073] [ 1236.690378] Freed by task 5137: [ 1236.692242] kasan_save_track+0x3e/0x80 [ 1236.694272] kasan_save_free_info+0x40/0x50 [ 1236.695514] __kasan_slab_free+0x3a/0x60 [ 1236.696773] kfree+0x14e/0x4e0 [ 1236.697216] ib_destroy_cq_user+0x18d/0x250 [ 1236.699817] smbdirect_connection_destroy_qp+0xf2/0x280 [ 1236.702115] smbdirect_socket_destroy_sync+0x1607/0x2720 [ 1236.704062] smbdirect_socket_release+0x140/0x280 [ 1236.705286] smb_direct_free_transpor ---truncated---

References

NVD — CVE-2026-90173 NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-90173

git.kernel.org/stable/c/8a953b1a47... WEB

https://git.kernel.org/stable/c/8a953b1a47fffb71e70767bc1e914401e3c2f27f

git.kernel.org/stable/c/fe2c0cacbc... WEB

https://git.kernel.org/stable/c/fe2c0cacbcff9d56c03b296f68f22151c4223b04

Frequently Asked Questions

What is CVE-2026-90173?

CVE-2026-90173 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-2026-90173?

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

What is the CVSS score of CVE-2026-90173?

CVE-2026-90173 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

What CWE is associated with CVE-2026-90173?

CVE-2026-90173 is classified under General Security Weakness.

How can I check Maven dependencies for CVE-2026-90173?

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-c82p-5m8q-6jh9",
  "modified" : "2026-09-18T18:31:27Z",
  "published" : "2026-09-17T18:31:53Z",
  "aliases" : [ "CVE-2026-90173" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: smbdirect: free completion queues with ib_free_cq()\n\nsmbdirect_connection_destroy_qp() creates the send and receive completion\nqueues with ib_alloc_cq_any(), which for IB_POLL_WORKQUEUE arms an\ninternal completion handler that runs ib_cq_poll_work() on a workqueue.\nTearing those CQs down with ib_destroy_cq() frees them without first\ncancelling that poll work.\n\nIf the provider posts a completion late -- for example Soft-RoCE (rxe)\nposting an RNR error from rxe_receiver() after rdma_destroy_qp() -- the\nhandler re-queues ib_cq_poll_work() on the already-freed CQ, and a\nfollow-on access faults in rxe_req_notify_cq().\n\nUse ib_free_cq(), which cancel_work_sync()es the poll work before freeing\nthe CQ, so no completion handler can run against a freed queue.\n\n[ 1236.599526] ==================================================================\n[ 1236.602142] BUG: KASAN: slab-use-after-free in ib_cq_poll_work+0xd0/0x1a0\n[ 1236.605524] Read of size 8 at addr ffff888111865800 by task kworker/4:1H/82\n[ 1236.609017]\n[ 1236.609270] CPU: 4 UID: 0 PID: 82 Comm: kworker/4:1H Not tainted 7.2.0-rc3-next-20260717-virtme #110 PREEMPT(lazy)\n[ 1236.609287] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-debian-1.17.0-1 04/01/2014\n[ 1236.609498] Workqueue: ib-comp-wq ib_cq_poll_work\n[ 1236.609525] Call Trace:\n[ 1236.609536]  <TASK>\n[ 1236.609545]  __dump_stack+0x21/0x60\n[ 1236.609562]  dump_stack_lvl+0xc2/0x100\n[ 1236.609573]  print_address_description+0x77/0x200\n[ 1236.609587]  ? ib_cq_poll_work+0xd0/0x1a0\n[ 1236.609597]  print_report+0x58/0x70\n[ 1236.609607]  kasan_report+0x117/0x150\n[ 1236.609623]  ? ib_cq_poll_work+0xd0/0x1a0\n[ 1236.609636]  ? process_scheduled_works+0x954/0x1600\n[ 1236.609650]  ib_cq_poll_work+0xd0/0x1a0\n[ 1236.609662]  ? process_scheduled_works+0x954/0x1600\n[ 1236.609674]  process_scheduled_works+0xc22/0x1600\n[ 1236.609698]  ? __pfx_process_scheduled_works+0x10/0x10\n[ 1236.609713]  ? __pfx_assign_work+0x10/0x10\n[ 1236.609726]  ? lock_is_held_type+0x7b/0x110\n[ 1236.609741]  worker_thread+0x975/0xee0\n[ 1236.609757]  ? __pfx_do_raw_spin_lock+0x10/0x10\n[ 1236.609775]  ? __kthread_parkme+0x21e/0x260\n[ 1236.609789]  kthread+0x3a6/0x490\n[ 1236.609800]  ? __pfx_worker_thread+0x10/0x10\n[ 1236.609809]  ? __pfx_kthread+0x10/0x10\n[ 1236.609820]  ret_from_fork+0x55a/0xa20\n[ 1236.609835]  ? __pfx_ret_from_fork+0x10/0x10\n[ 1236.609850]  ? __pfx_kthread+0x10/0x10\n[ 1236.609861]  ret_from_fork_asm+0x1a/0x30\n[ 1236.609880]  </TASK>\n[ 1236.609886]\n[ 1236.661292] Allocated by task 5076:\n[ 1236.662640]  kasan_save_track+0x3e/0x80\n[ 1236.663842]  __kasan_kmalloc+0x72/0x90\n[ 1236.664763]  __kmalloc_noprof+0x2b0/0x5d0\n[ 1236.665356]  __ib_alloc_cq+0x284/0x1000\n[ 1236.666573]  __ib_alloc_cq_any+0x23e/0x340\n[ 1236.668654]  smbdirect_connection_create_qp+0x6f7/0x1070\n[ 1236.669757]  smbdirect_accept_connect_request+0x500/0x1ca0\n[ 1236.672625]  smbdirect_listen_rdma_event_handler+0x1655/0x1c50\n[ 1236.673930]  cma_listen_handler+0x1bf/0x260\n[ 1236.674923]  cma_cm_event_handler+0x128/0x380\n[ 1236.676926]  cma_ib_req_handler+0x2d3d/0x4de0\n[ 1236.678368]  cm_process_work+0xb0/0x530\n[ 1236.680454]  cm_queue_work_unlock+0xb1/0x230\n[ 1236.681673]  cm_work_handler+0x969f/0xdca0\n[ 1236.682704]  process_scheduled_works+0xc22/0x1600\n[ 1236.683447]  worker_thread+0x975/0xee0\n[ 1236.685901]  kthread+0x3a6/0x490\n[ 1236.688164]  ret_from_fork+0x55a/0xa20\n[ 1236.689522]  ret_from_fork_asm+0x1a/0x30\n[ 1236.690073]\n[ 1236.690378] Freed by task 5137:\n[ 1236.692242]  kasan_save_track+0x3e/0x80\n[ 1236.694272]  kasan_save_free_info+0x40/0x50\n[ 1236.695514]  __kasan_slab_free+0x3a/0x60\n[ 1236.696773]  kfree+0x14e/0x4e0\n[ 1236.697216]  ib_destroy_cq_user+0x18d/0x250\n[ 1236.699817]  smbdirect_connection_destroy_qp+0xf2/0x280\n[ 1236.702115]  smbdirect_socket_destroy_sync+0x1607/0x2720\n[ 1236.704062]  smbdirect_socket_release+0x140/0x280\n[ 1236.705286]  smb_direct_free_transpor\n---truncated---",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-90173"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8a953b1a47fffb71e70767bc1e914401e3c2f27f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fe2c0cacbcff9d56c03b296f68f22151c4223b04"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-17T17:17:10Z"
  }
}

CVSS V3

9.8 CRITICAL