CVE-2026-80889: Software Security Vulnerability Vulnerability

UNKNOWN

Advisory Identifier: GHSA-r952-5653-4wq2

Published 2026-09-04

Advisory Summary

CVE-2026-80889 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-2026-80889 at a Glance

CVE Identifier CVE-2026-80889

GHSA Identifier GHSA-r952-5653-4wq2

Severity N/A

CVSS v3.1 Base Score N/A

CWE Classification General Security Weakness

Affected Product Software

Package Ecosystem Maven

Published Date 2026-09-04

Last Updated 2026-09-04

How to Fix CVE-2026-80889

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-2026-80889, 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: can: isotp: fix timer drain order, wakeup handling and tx_gen ordering This patch is a follow-up to commit cf070fe33bfb ("can: isotp: serialize TX state transitions under so->rx_lock") which addresses following sashiko-bot findings: - isotp_sendmsg(): drain so->txfrtimer first so a stale callback can't re-arm echotimer after the claim - isotp_release(): wake so->wait after forcing ISOTP_SHUTDOWN so a sleeping sendmsg() claim isn't stranded - isotp_sendmsg(): have both wait_event_interruptible() calls in isotp_sendmsg() also wake on ISOTP_SHUTDOWN and do not return claim to IDLE to avoid corrupting a concurrent isotp_release() process. - isotp_sendmsg(): handle potential claim of a new transfer when the wait_event_interruptible() call returns in CAN_ISOTP_WAIT_TX_DONE mode. Don't touch timers and states of the new transfer if a new thread incremented so->tx_gen before getting the lock at err_event_drop. - isotp_sendmsg(): handle a stuck can_send() and omit timer and state changes if a new transfer was claimed. wait_tx_done() returns the error recorded in so->tx_result[], tagged with the caller's own generation. - isotp_tx_timeout(): on a claimed timeout, record the ECOMM error for the timed-out transfer's own generation in so->tx_result[]; sk->sk_err is raised unconditionally, same as every other error path here. - isotp_tx_gen_done()/isotp_tx_timeout(): always read tx.state (acquire) before tx_gen - the reverse order let a weakly ordered CPU pair a fresh tx.state with a stale tx_gen/tx_result slot. - isotp_sendmsg(): wait_tx_done: drain sk_err via sock_error() once we have read the result from so->tx_result[], so an already-reported error doesn't stay latched for a later poll()/SO_ERROR. Also align the remaining lock-free so->tx.state/rx.state/cfecho accesses and use skb->hash as unique loopback echo frame indicator.

References

NVD — CVE-2026-80889 NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-80889

git.kernel.org/stable/c/050f010f92... WEB

https://git.kernel.org/stable/c/050f010f920da17c1044a4f174766ad553e770b6

git.kernel.org/stable/c/10be509fa8... WEB

https://git.kernel.org/stable/c/10be509fa8fd95d1e47d40d1f68b0b26dfe9d572

git.kernel.org/stable/c/2753722612... WEB

https://git.kernel.org/stable/c/2753722612d8824d3910096f93059f669009b0f0

git.kernel.org/stable/c/35c62ac98d... WEB

https://git.kernel.org/stable/c/35c62ac98d06669aa3f0f38b7829eaca929a611e

git.kernel.org/stable/c/8acab9fc66... WEB

https://git.kernel.org/stable/c/8acab9fc66d6f426c36968c91a979f70784945a7

git.kernel.org/stable/c/af7e25c649... WEB

https://git.kernel.org/stable/c/af7e25c649ed68cbad07f8185af0f31b892cbf29

git.kernel.org/stable/c/bf5c4a8b24... WEB

https://git.kernel.org/stable/c/bf5c4a8b24acb12739ebb9aea5510b007e4f5239

git.kernel.org/stable/c/deca7746b5... WEB

https://git.kernel.org/stable/c/deca7746b57d982cd4f0301f4443f56780c4a048

Frequently Asked Questions

What is CVE-2026-80889?

CVE-2026-80889 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-2026-80889?

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

What CWE is associated with CVE-2026-80889?

CVE-2026-80889 is classified under General Security Weakness.

How can I check Maven dependencies for CVE-2026-80889?

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-r952-5653-4wq2",
  "modified" : "2026-09-04T18:31:33Z",
  "published" : "2026-09-04T18:31:33Z",
  "aliases" : [ "CVE-2026-80889" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: isotp: fix timer drain order, wakeup handling and tx_gen ordering\n\nThis patch is a follow-up to commit cf070fe33bfb (\"can: isotp: serialize\nTX state transitions under so->rx_lock\") which addresses following\nsashiko-bot findings:\n\n- isotp_sendmsg(): drain so->txfrtimer first so a stale callback can't\n  re-arm echotimer after the claim\n\n- isotp_release(): wake so->wait after forcing ISOTP_SHUTDOWN so a\n  sleeping sendmsg() claim isn't stranded\n\n- isotp_sendmsg(): have both wait_event_interruptible() calls in\n  isotp_sendmsg() also wake on ISOTP_SHUTDOWN and do not return claim to\n  IDLE to avoid corrupting a concurrent isotp_release() process.\n\n- isotp_sendmsg(): handle potential claim of a new transfer when\n  the wait_event_interruptible() call returns in CAN_ISOTP_WAIT_TX_DONE\n  mode. Don't touch timers and states of the new transfer if a new thread\n  incremented so->tx_gen before getting the lock at err_event_drop.\n\n- isotp_sendmsg(): handle a stuck can_send() and omit timer and state\n  changes if a new transfer was claimed. wait_tx_done() returns the error\n  recorded in so->tx_result[], tagged with the caller's own generation.\n\n- isotp_tx_timeout(): on a claimed timeout, record the ECOMM error for\n  the timed-out transfer's own generation in so->tx_result[]; sk->sk_err\n  is raised unconditionally, same as every other error path here.\n\n- isotp_tx_gen_done()/isotp_tx_timeout(): always read tx.state (acquire)\n  before tx_gen - the reverse order let a weakly ordered CPU pair a fresh\n  tx.state with a stale tx_gen/tx_result slot.\n\n- isotp_sendmsg(): wait_tx_done: drain sk_err via sock_error() once we\n  have read the result from so->tx_result[], so an already-reported error\n  doesn't stay latched for a later poll()/SO_ERROR.\n\nAlso align the remaining lock-free so->tx.state/rx.state/cfecho accesses\nand use skb->hash as unique loopback echo frame indicator.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
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  }, {
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    "url" : "https://git.kernel.org/stable/c/050f010f920da17c1044a4f174766ad553e770b6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/10be509fa8fd95d1e47d40d1f68b0b26dfe9d572"
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    "url" : "https://git.kernel.org/stable/c/2753722612d8824d3910096f93059f669009b0f0"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/35c62ac98d06669aa3f0f38b7829eaca929a611e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8acab9fc66d6f426c36968c91a979f70784945a7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/af7e25c649ed68cbad07f8185af0f31b892cbf29"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/bf5c4a8b24acb12739ebb9aea5510b007e4f5239"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/deca7746b57d982cd4f0301f4443f56780c4a048"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-04T18:17:56Z"
  }
}

Advisory Metadata

Source ID: GHSA-r952-5653-4wq2
Schema Version: 1.4.0
Published: 2026-09-04 18:31
Last Modified: 2026-09-04 18:31
Database Record File: advisories/unreviewed/2026/09/GHSA-r952-5653-4wq2/GHSA-r952-5653-4wq2.json