CVE-2026-80971: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-27wq-xjr3-w8c9
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CVSS 7.8
Published
Advisory Summary

CVE-2026-80971 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-2026-80971 at a Glance

CVE Identifier CVE-2026-80971
GHSA Identifier GHSA-27wq-xjr3-w8c9
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

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-2026-80971

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-2026-80971, 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: ALSA: bcd2000: clear the URB pointers on disconnect bcd2000_free_usb_related_resources() frees both URBs and leaves the pointers behind: usb_kill_urb(bcd2k->midi_out_urb); usb_kill_urb(bcd2k->midi_in_urb); usb_free_urb(bcd2k->midi_out_urb); usb_free_urb(bcd2k->midi_in_urb); The rawmidi device outlives that call. A substream that is still open when the device is unplugged reaches bcd2000_midi_send() from the trigger path on close. That function writes to the freed URB and then hands it to the USB core: bcd2k->midi_out_urb->transfer_buffer_length = BUFSIZE; ... ret = usb_submit_urb(bcd2k->midi_out_urb, GFP_ATOMIC); usb_kill_urb() does not stop a later submission either, so a submit that races the disconnect can requeue the URB after it has been reaped. midi_in_urb is exposed the same way: bcd2000_input_complete() resubmits it from the completion handler. KASAN on 7.2.0-rc5 (arm64): BUG: KASAN: slab-use-after-free in bcd2000_midi_send [snd_bcd2000] Write of size 4 at addr ffff00001827d388 by task bpoc/168 __asan_store4 bcd2000_midi_send [snd_bcd2000] bcd2000_midi_output_trigger [snd_bcd2000] snd_rawmidi_kernel_write1 close_substream.part.0 Freed by task 168: usb_free_urb bcd2000_disconnect [snd_bcd2000] BUG: KASAN: slab-use-after-free in usb_submit_urb Read of size 8 at addr ffff00001827d3b8 by task bpoc/168 Clear both pointers after freeing and test them on the paths that can still run. Poison the URBs before freeing them: usb_poison_urb() waits for a running completion handler and rejects any later submission, so after it returns the input path is quiesced and only the rawmidi trigger path can still reach bcd2000_midi_send(). No unpoison is needed; the URBs are freed on the next line. Discovered by XBOW, triaged by Baul Lee <baul.lee@xbow.com>

References

NVD — CVE-2026-80971 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80971
git.kernel.org/stable/c/3c00004f13... WEB
https://git.kernel.org/stable/c/3c00004f134fc819f9d9e202c6a64acde0a1f8d0
git.kernel.org/stable/c/459d3a6476... WEB
https://git.kernel.org/stable/c/459d3a64766f5ca2f1886daeaf24582831a5f5ab
git.kernel.org/stable/c/5a77febac6... WEB
https://git.kernel.org/stable/c/5a77febac6faf6da40fbb4555f703eeb91b58130
git.kernel.org/stable/c/6c07aad8a7... WEB
https://git.kernel.org/stable/c/6c07aad8a7c9ef8ebc4d03a964b882123a349a2e
git.kernel.org/stable/c/7df3194bdb... WEB
https://git.kernel.org/stable/c/7df3194bdb7479cad9199889655a566a2c0c1d1b
git.kernel.org/stable/c/9af08677aa... WEB
https://git.kernel.org/stable/c/9af08677aa57debaca5b57c8045c52a83d3dd376
git.kernel.org/stable/c/b06ebc7fe2... WEB
https://git.kernel.org/stable/c/b06ebc7fe25a6af4a9f6e4a3d4236a4178ad4b01
git.kernel.org/stable/c/eb482a0679... WEB
https://git.kernel.org/stable/c/eb482a06791d6168beb8c78cc904ac5a5ed96a55

Frequently Asked Questions

What is CVE-2026-80971?
CVE-2026-80971 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-2026-80971?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-80971?
CVE-2026-80971 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-2026-80971?
CVE-2026-80971 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80971?
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-27wq-xjr3-w8c9",
  "modified" : "2026-09-14T15:32:21Z",
  "published" : "2026-09-11T21:31:22Z",
  "aliases" : [ "CVE-2026-80971" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: bcd2000: clear the URB pointers on disconnect\n\nbcd2000_free_usb_related_resources() frees both URBs and leaves the\npointers behind:\n\n\tusb_kill_urb(bcd2k->midi_out_urb);\n\tusb_kill_urb(bcd2k->midi_in_urb);\n\n\tusb_free_urb(bcd2k->midi_out_urb);\n\tusb_free_urb(bcd2k->midi_in_urb);\n\nThe rawmidi device outlives that call.  A substream that is still open\nwhen the device is unplugged reaches bcd2000_midi_send() from the\ntrigger path on close.  That function writes to the freed URB and then\nhands it to the USB core:\n\n\tbcd2k->midi_out_urb->transfer_buffer_length = BUFSIZE;\n\t...\n\tret = usb_submit_urb(bcd2k->midi_out_urb, GFP_ATOMIC);\n\nusb_kill_urb() does not stop a later submission either, so a submit that\nraces the disconnect can requeue the URB after it has been reaped.\nmidi_in_urb is exposed the same way: bcd2000_input_complete() resubmits\nit from the completion handler.\n\nKASAN on 7.2.0-rc5 (arm64):\n\n  BUG: KASAN: slab-use-after-free in bcd2000_midi_send [snd_bcd2000]\n  Write of size 4 at addr ffff00001827d388 by task bpoc/168\n   __asan_store4\n   bcd2000_midi_send [snd_bcd2000]\n   bcd2000_midi_output_trigger [snd_bcd2000]\n   snd_rawmidi_kernel_write1\n   close_substream.part.0\n  Freed by task 168:\n   usb_free_urb\n   bcd2000_disconnect [snd_bcd2000]\n\n  BUG: KASAN: slab-use-after-free in usb_submit_urb\n  Read of size 8 at addr ffff00001827d3b8 by task bpoc/168\n\nClear both pointers after freeing and test them on the paths that can\nstill run.  Poison the URBs before freeing them: usb_poison_urb() waits\nfor a running completion handler and rejects any later submission, so\nafter it returns the input path is quiesced and only the rawmidi trigger\npath can still reach bcd2000_midi_send().  No unpoison is needed; the\nURBs are freed on the next line.\n\nDiscovered by XBOW, triaged by Baul Lee <baul.lee@xbow.com>",
  "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-2026-80971"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3c00004f134fc819f9d9e202c6a64acde0a1f8d0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/459d3a64766f5ca2f1886daeaf24582831a5f5ab"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5a77febac6faf6da40fbb4555f703eeb91b58130"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6c07aad8a7c9ef8ebc4d03a964b882123a349a2e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7df3194bdb7479cad9199889655a566a2c0c1d1b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9af08677aa57debaca5b57c8045c52a83d3dd376"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b06ebc7fe25a6af4a9f6e4a3d4236a4178ad4b01"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/eb482a06791d6168beb8c78cc904ac5a5ed96a55"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:03Z"
  }
}