CVE-2026-98142: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-4mx2-2wh8-249p
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Advisory Summary

CVE-2026-98142 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-2026-98142 at a Glance

CVE Identifier CVE-2026-98142
GHSA Identifier GHSA-4mx2-2wh8-249p
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-2026-98142

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-2026-98142, 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: drm/cirrus-qemu: Validate BAR0 size during probe The `cirrus-qemu` driver relies on `CIRRUS_VRAM_SIZE` (4 MB) to validate framebuffer sizes. However, during PCI probe, the driver mapped BAR0 without verifying that its size matches `CIRRUS_VRAM_SIZE`. If a PCI device with a BAR0 smaller than 4 MB is bound to the driver, the mapped VRAM will be smaller than expected. Because validation checks assume 4 MB VRAM, framebuffers larger than the mapped memory can be created. When the display plane is updated (e.g. during release), `cirrus_primary_plane_helper_atomic_update()` copies the framebuffer to VRAM using `drm_fb_memcpy()`. Writing past the end of the mapped I/O memory causes a supervisor write page fault: BUG: unable to handle page fault for address: ffffc9000389c000 ... RIP: 0010:memcpy_toio+0x7c/0xe0 arch/x86/lib/iomem.c:110 ... Call Trace: <TASK> iosys_map_memcpy_to include/linux/iosys-map.h:285 [inline] drm_fb_memcpy+0x325/0x5d0 drivers/gpu/drm/drm_format_helper.c:442 cirrus_primary_plane_helper_atomic_update+0x98a/0xb00 drivers/gpu/drm/tiny/cirrus-qemu.c:358 drm_atomic_helper_commit_planes+0x626/0xea0 drivers/gpu/drm/drm_atomic_helper.c:3038 drm_atomic_helper_commit_tail+0x60/0x510 drivers/gpu/drm/drm_atomic_helper.c:1989 commit_tail+0x2b1/0x3c0 drivers/gpu/drm/drm_atomic_helper.c:2074 drm_atomic_helper_commit+0xa77/0xb10 drivers/gpu/drm/drm_atomic_helper.c:2312 Fix this by validating in `cirrus_pci_probe()` that the PCI BAR0 resource is not less than `CIRRUS_VRAM_SIZE`, returning `-ENODEV` if it is less.

References

NVD — CVE-2026-98142 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98142
git.kernel.org/stable/c/0b5084a1f0... WEB
https://git.kernel.org/stable/c/0b5084a1f070ad1fc34e11945644ae034bbc774c
git.kernel.org/stable/c/144f51cd0c... WEB
https://git.kernel.org/stable/c/144f51cd0ccc3ad47a6099917b7bb535611fb18f
git.kernel.org/stable/c/26bd90c886... WEB
https://git.kernel.org/stable/c/26bd90c886218f36c9adeab206b0e27b4384e2f6
git.kernel.org/stable/c/2a0e7bcff3... WEB
https://git.kernel.org/stable/c/2a0e7bcff3fa63e7309d2b39e18af59eb8ef2b6e
git.kernel.org/stable/c/92312d333b... WEB
https://git.kernel.org/stable/c/92312d333bf700798f92f30406c721bce87506f3

Frequently Asked Questions

What is CVE-2026-98142?
CVE-2026-98142 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-2026-98142?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98142?
CVE-2026-98142 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98142?
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-4mx2-2wh8-249p",
  "modified" : "2026-10-03T12:31:28Z",
  "published" : "2026-09-25T12:31:38Z",
  "aliases" : [ "CVE-2026-98142" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/cirrus-qemu: Validate BAR0 size during probe\n\nThe `cirrus-qemu` driver relies on `CIRRUS_VRAM_SIZE` (4 MB) to validate\nframebuffer sizes. However, during PCI probe, the driver mapped BAR0\nwithout verifying that its size matches `CIRRUS_VRAM_SIZE`.\n\nIf a PCI device with a BAR0 smaller than 4 MB is bound to the driver, the\nmapped VRAM will be smaller than expected. Because validation checks assume\n4 MB VRAM, framebuffers larger than the mapped memory can be created.\n\nWhen the display plane is updated (e.g. during release),\n`cirrus_primary_plane_helper_atomic_update()` copies the framebuffer to\nVRAM using `drm_fb_memcpy()`. Writing past the end of the mapped I/O memory\ncauses a supervisor write page fault:\n\nBUG: unable to handle page fault for address: ffffc9000389c000\n...\nRIP: 0010:memcpy_toio+0x7c/0xe0 arch/x86/lib/iomem.c:110\n...\nCall Trace:\n <TASK>\n iosys_map_memcpy_to include/linux/iosys-map.h:285 [inline]\n drm_fb_memcpy+0x325/0x5d0 drivers/gpu/drm/drm_format_helper.c:442\n cirrus_primary_plane_helper_atomic_update+0x98a/0xb00\n drivers/gpu/drm/tiny/cirrus-qemu.c:358\n drm_atomic_helper_commit_planes+0x626/0xea0\n drivers/gpu/drm/drm_atomic_helper.c:3038\n drm_atomic_helper_commit_tail+0x60/0x510\n drivers/gpu/drm/drm_atomic_helper.c:1989\n commit_tail+0x2b1/0x3c0 drivers/gpu/drm/drm_atomic_helper.c:2074\n drm_atomic_helper_commit+0xa77/0xb10\n drivers/gpu/drm/drm_atomic_helper.c:2312\n\nFix this by validating in `cirrus_pci_probe()` that the PCI BAR0 resource\nis not less than `CIRRUS_VRAM_SIZE`, returning `-ENODEV` if it is less.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98142"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0b5084a1f070ad1fc34e11945644ae034bbc774c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/144f51cd0ccc3ad47a6099917b7bb535611fb18f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/26bd90c886218f36c9adeab206b0e27b4384e2f6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2a0e7bcff3fa63e7309d2b39e18af59eb8ef2b6e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/92312d333bf700798f92f30406c721bce87506f3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-25T11:17:45Z"
  }
}