CVE-2026-98640: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-5m32-w674-2xq4
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Advisory Summary

CVE-2026-98640 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-2026-98640 at a Glance

CVE Identifier CVE-2026-98640
GHSA Identifier GHSA-5m32-w674-2xq4
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-2026-98640

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-2026-98640, 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: HID: amd_sfh: Validate PCI BAR size before mapping The amd_sfh driver maps PCI BAR 2 using pcim_iomap_regions() and subsequently accesses MMIO registers at offsets up to 0x10958 (e.g., AMD_P2C_MSG3 at 0x1068C). However, the driver never validates that the BAR size is large enough to cover these accesses. If the driver is bound to a device with a smaller BAR 2, this leads to an out-of-bounds memory access and a page fault during the probe function. For example, a page fault can occur when reading from privdata->mmio + AMD_P2C_MSG3 in mp2_select_ops(): BUG: unable to handle page fault for address: ffffc9000390368c PGD 100000067 P4D 100000067 PUD 1012c1067 PMD 105b64067 PTE 0 Oops: Oops: 0000 [#1] SMP KASAN NOPTI RIP: 0010:readl arch/x86/include/asm/io.h:59 [inline] RIP: 0010:mp2_select_ops drivers/hid/amd-sfh-hid/amd_sfh_pcie.c:282 [inline] RIP: 0010:amd_mp2_pci_probe+0x337/0x5f0 drivers/hid/amd-sfh-hid/amd_sfh_pcie.c:487 Call Trace: <TASK> local_pci_probe drivers/pci/pci-driver.c:332 [inline] pci_call_probe drivers/pci/pci-driver.c:394 [inline] __pci_device_probe drivers/pci/pci-driver.c:455 [inline] pci_device_probe+0x431/0xc90 drivers/pci/pci-driver.c:489 Fix this by verifying that the length of BAR 2 is at least 128KB before attempting to map it. Since the maximum accessed offset is 0x10958, and PCI BAR sizes are powers of 2, any legitimate hardware will have a BAR size of at least 128KB.

References

NVD — CVE-2026-98640 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98640
git.kernel.org/stable/c/5f9e2ecb72... WEB
https://git.kernel.org/stable/c/5f9e2ecb725adced013fbf5f94b9f185fad2e7d9
git.kernel.org/stable/c/5ff24aa7af... WEB
https://git.kernel.org/stable/c/5ff24aa7af0bca0780fe4e6effce902065f2c0a7
git.kernel.org/stable/c/65bcc5f897... WEB
https://git.kernel.org/stable/c/65bcc5f89704efe5b9d69d4ea2c1002d90c31382
git.kernel.org/stable/c/7b3747d777... WEB
https://git.kernel.org/stable/c/7b3747d77767f066ccf4a9e8e3a8381643ab5368
git.kernel.org/stable/c/92bf2883da... WEB
https://git.kernel.org/stable/c/92bf2883da0306ab9d1eb794acd1058fc5088ebc
git.kernel.org/stable/c/dc68748913... WEB
https://git.kernel.org/stable/c/dc687489131559ee52f447592f6d039a5a013061
git.kernel.org/stable/c/ee25833f03... WEB
https://git.kernel.org/stable/c/ee25833f037fa22d23ffdbfeebabe3579e8a0346

Frequently Asked Questions

What is CVE-2026-98640?
CVE-2026-98640 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-2026-98640?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98640?
CVE-2026-98640 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98640?
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-5m32-w674-2xq4",
  "modified" : "2026-10-18T18:31:57Z",
  "published" : "2026-10-18T18:31:57Z",
  "aliases" : [ "CVE-2026-98640" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: amd_sfh: Validate PCI BAR size before mapping\n\nThe amd_sfh driver maps PCI BAR 2 using pcim_iomap_regions() and\nsubsequently accesses MMIO registers at offsets up to 0x10958 (e.g.,\nAMD_P2C_MSG3 at 0x1068C). However, the driver never validates that the BAR\nsize is large enough to cover these accesses. If the driver is bound to a\ndevice with a smaller BAR 2, this leads to an out-of-bounds memory access\nand a page fault during the probe function.\n\nFor example, a page fault can occur when reading from privdata->mmio +\nAMD_P2C_MSG3 in mp2_select_ops():\n\n  BUG: unable to handle page fault for address: ffffc9000390368c\n  PGD 100000067 P4D 100000067 PUD 1012c1067 PMD 105b64067 PTE 0\n  Oops: Oops: 0000 [#1] SMP KASAN NOPTI\n  RIP: 0010:readl arch/x86/include/asm/io.h:59 [inline]\n  RIP: 0010:mp2_select_ops drivers/hid/amd-sfh-hid/amd_sfh_pcie.c:282\n  [inline]\n  RIP: 0010:amd_mp2_pci_probe+0x337/0x5f0\n  drivers/hid/amd-sfh-hid/amd_sfh_pcie.c:487\n  Call Trace:\n   <TASK>\n   local_pci_probe drivers/pci/pci-driver.c:332 [inline]\n   pci_call_probe drivers/pci/pci-driver.c:394 [inline]\n   __pci_device_probe drivers/pci/pci-driver.c:455 [inline]\n   pci_device_probe+0x431/0xc90 drivers/pci/pci-driver.c:489\n\nFix this by verifying that the length of BAR 2 is at least 128KB before\nattempting to map it. Since the maximum accessed offset is 0x10958, and PCI\nBAR sizes are powers of 2, any legitimate hardware will have a BAR size of\nat least 128KB.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98640"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5f9e2ecb725adced013fbf5f94b9f185fad2e7d9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5ff24aa7af0bca0780fe4e6effce902065f2c0a7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/65bcc5f89704efe5b9d69d4ea2c1002d90c31382"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7b3747d77767f066ccf4a9e8e3a8381643ab5368"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/92bf2883da0306ab9d1eb794acd1058fc5088ebc"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/dc687489131559ee52f447592f6d039a5a013061"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ee25833f037fa22d23ffdbfeebabe3579e8a0346"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-18T16:17:17Z"
  }
}