CVE-2026-80644: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-2fq5-fj4m-pqwr
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Advisory Summary

CVE-2026-80644 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-2026-80644 at a Glance

CVE Identifier CVE-2026-80644
GHSA Identifier GHSA-2fq5-fj4m-pqwr
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-2026-80644

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-2026-80644, 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: ocfs2: don't BUG_ON an invalid journal dinode [BUG] A fuzzed OCFS2 image can corrupt the current slot journal dinode while mount is still in progress. The mount path first reports the invalid journal block and then crashes in shutdown: kernel BUG at fs/ocfs2/journal.c:1034! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI RIP: 0010:ocfs2_journal_toggle_dirty+0x2d6/0x340 fs/ocfs2/journal.c:1034 Call Trace: ocfs2_journal_shutdown+0x414/0xc30 fs/ocfs2/journal.c:1116 ocfs2_mount_volume fs/ocfs2/super.c:1785 [inline] ocfs2_fill_super+0x30a9/0x3cd0 fs/ocfs2/super.c:1083 get_tree_bdev_flags+0x38b/0x640 fs/super.c:1698 get_tree_bdev+0x24/0x40 fs/super.c:1721 ocfs2_get_tree+0x21/0x30 fs/ocfs2/super.c:1184 vfs_get_tree+0x9a/0x370 fs/super.c:1758 fc_mount fs/namespace.c:1199 [inline] do_new_mount_fc fs/namespace.c:3642 [inline] do_new_mount fs/namespace.c:3718 [inline] path_mount+0x5b8/0x1ea0 fs/namespace.c:4028 do_mount fs/namespace.c:4041 [inline] __do_sys_mount fs/namespace.c:4229 [inline] __se_sys_mount fs/namespace.c:4206 [inline] __x64_sys_mount+0x282/0x320 fs/namespace.c:4206 ... [CAUSE] ocfs2_journal_toggle_dirty() used to return -EIO when journal->j_bh no longer contained a valid dinode, because the startup and shutdown paths already handled that failure. Commit 10995aa2451a ("ocfs2: Morph the haphazard OCFS2_IS_VALID_DINODE() checks.") changed the check to a BUG_ON() under the assumption that the journal dinode had already been validated. That turns an unexpected invalid journal dinode during mount teardown into a kernel crash instead of a normal mount failure. [FIX] Replace the BUG_ON() with WARN_ON() and return -EIO. This keeps the invariant warning for debugging, but restores the original behavior of failing startup or shutdown cleanly instead of panicking the kernel.

References

NVD — CVE-2026-80644 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80644
git.kernel.org/stable/c/12c32a7350... WEB
https://git.kernel.org/stable/c/12c32a7350b670aaaaf2e01583d8648ec0c9755c
git.kernel.org/stable/c/3852478d34... WEB
https://git.kernel.org/stable/c/3852478d34c7baa490ba9c7374ee901a56eea577
git.kernel.org/stable/c/5b33f99f3e... WEB
https://git.kernel.org/stable/c/5b33f99f3e48465bd93219495381a5aef4fa967f
git.kernel.org/stable/c/86509c5296... WEB
https://git.kernel.org/stable/c/86509c5296fe46ad6bcdd83931a53c2c6b7913a8
git.kernel.org/stable/c/a06eec1559... WEB
https://git.kernel.org/stable/c/a06eec15596e5801bad59ad16cd2bf4f0fa839a1
git.kernel.org/stable/c/b460f8d01a... WEB
https://git.kernel.org/stable/c/b460f8d01a12061853d02c8fb693fb42450acd7d
git.kernel.org/stable/c/bf1d59cf2a... WEB
https://git.kernel.org/stable/c/bf1d59cf2ac8a1730607ebaa0bc0dc6d00f197d0
git.kernel.org/stable/c/c0438198c2... WEB
https://git.kernel.org/stable/c/c0438198c28b1d22c272751af5e717c11d9fa8dd

Frequently Asked Questions

What is CVE-2026-80644?
CVE-2026-80644 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-2026-80644?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-80644?
CVE-2026-80644 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80644?
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-2fq5-fj4m-pqwr",
  "modified" : "2026-08-28T09:31:48Z",
  "published" : "2026-08-28T09:31:48Z",
  "aliases" : [ "CVE-2026-80644" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: don't BUG_ON an invalid journal dinode\n\n[BUG]\nA fuzzed OCFS2 image can corrupt the current slot journal dinode while\nmount is still in progress. The mount path first reports the invalid\njournal block and then crashes in shutdown:\n\nkernel BUG at fs/ocfs2/journal.c:1034!\nOops: invalid opcode: 0000 [#1] SMP KASAN NOPTI\nRIP: 0010:ocfs2_journal_toggle_dirty+0x2d6/0x340 fs/ocfs2/journal.c:1034\nCall Trace:\n ocfs2_journal_shutdown+0x414/0xc30 fs/ocfs2/journal.c:1116\n ocfs2_mount_volume fs/ocfs2/super.c:1785 [inline]\n ocfs2_fill_super+0x30a9/0x3cd0 fs/ocfs2/super.c:1083\n get_tree_bdev_flags+0x38b/0x640 fs/super.c:1698\n get_tree_bdev+0x24/0x40 fs/super.c:1721\n ocfs2_get_tree+0x21/0x30 fs/ocfs2/super.c:1184\n vfs_get_tree+0x9a/0x370 fs/super.c:1758\n fc_mount fs/namespace.c:1199 [inline]\n do_new_mount_fc fs/namespace.c:3642 [inline]\n do_new_mount fs/namespace.c:3718 [inline]\n path_mount+0x5b8/0x1ea0 fs/namespace.c:4028\n do_mount fs/namespace.c:4041 [inline]\n __do_sys_mount fs/namespace.c:4229 [inline]\n __se_sys_mount fs/namespace.c:4206 [inline]\n __x64_sys_mount+0x282/0x320 fs/namespace.c:4206\n ...\n\n[CAUSE]\nocfs2_journal_toggle_dirty() used to return -EIO when journal->j_bh no\nlonger contained a valid dinode, because the startup and shutdown paths\nalready handled that failure. Commit 10995aa2451a\n(\"ocfs2: Morph the haphazard OCFS2_IS_VALID_DINODE() checks.\") changed\nthe check to a BUG_ON() under the assumption that the journal dinode had\nalready been validated. That turns an unexpected invalid journal dinode\nduring mount teardown into a kernel crash instead of a normal mount\nfailure.\n\n[FIX]\nReplace the BUG_ON() with WARN_ON() and return -EIO. This keeps the\ninvariant warning for debugging, but restores the original behavior of\nfailing startup or shutdown cleanly instead of panicking the kernel.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-80644"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/12c32a7350b670aaaaf2e01583d8648ec0c9755c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3852478d34c7baa490ba9c7374ee901a56eea577"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5b33f99f3e48465bd93219495381a5aef4fa967f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/86509c5296fe46ad6bcdd83931a53c2c6b7913a8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a06eec15596e5801bad59ad16cd2bf4f0fa839a1"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b460f8d01a12061853d02c8fb693fb42450acd7d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/bf1d59cf2ac8a1730607ebaa0bc0dc6d00f197d0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c0438198c28b1d22c272751af5e717c11d9fa8dd"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-28T08:16:49Z"
  }
}