CVE-2026-64544: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-4qp2-jghx-88mp
Share
Published
Advisory Summary

CVE-2026-64544 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-2026-64544 at a Glance

CVE Identifier CVE-2026-64544
GHSA Identifier GHSA-4qp2-jghx-88mp
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-2026-64544

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-2026-64544, 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: crypto: asymmetric_keys - fix OOB read in pefile_digest_pe_contents pefile_digest_pe_contents() computes the trailing-data hash length as pelen - (hashed_bytes + certs_size). A crafted PE can make the addition exceed pelen, causing the unsigned subtraction to underflow to ~4 GiB. This is passed to crypto_shash_update() which reads out of bounds and panics on unmapped vmalloc guard pages. BUG: unable to handle page fault for address: ffffc900038d8000 Oops: Oops: 0000 [#1] SMP KASAN NOPTI RIP: 0010:sha256_blocks_generic (lib/crypto/sha256.c:152) Call Trace: <TASK> __sha256_update (lib/crypto/sha256.c:208) crypto_sha256_update (crypto/sha256.c:142) verify_pefile_signature (crypto/asymmetric_keys/verify_pefile.c:436) kexec_kernel_verify_pe_sig (kernel/kexec_file.c:151) __do_sys_kexec_file_load (kernel/kexec_file.c:406) do_syscall_64 (arch/x86/entry/syscall_64.c:94) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) </TASK> Kernel panic - not syncing: Fatal exception Validate that the addition does not overflow and the result does not exceed pelen before the subtraction. Return -ELIBBAD on failure.

References

NVD — CVE-2026-64544 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64544
git.kernel.org/stable/c/6279383837... WEB
https://git.kernel.org/stable/c/627938383761fb4334b41ebe7ef438d6b8b19d60
git.kernel.org/stable/c/6acd2fbd00... WEB
https://git.kernel.org/stable/c/6acd2fbd00f9c72aebefce63fc2e73e8f3d79061
git.kernel.org/stable/c/7016377699... WEB
https://git.kernel.org/stable/c/7016377699b5b25b7ec3c0bf2ec3f983c7e95f7c
git.kernel.org/stable/c/803591785d... WEB
https://git.kernel.org/stable/c/803591785d33cf13b6f73ce2796e8b9e6d5e6526
git.kernel.org/stable/c/89efd99847... WEB
https://git.kernel.org/stable/c/89efd998470a93284b7ad5a20d4e0e3c6858ae8e
git.kernel.org/stable/c/b798ada5a5... WEB
https://git.kernel.org/stable/c/b798ada5a5d1cb4cc4cfa72074b1b463eca6c506
git.kernel.org/stable/c/e162bc386e... WEB
https://git.kernel.org/stable/c/e162bc386e71b5412425a38ee048e8d2185491b9
git.kernel.org/stable/c/f7dd32c517... WEB
https://git.kernel.org/stable/c/f7dd32c5179d7755de18e21d5674b08f9e5cb180

Frequently Asked Questions

What is CVE-2026-64544?
CVE-2026-64544 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-2026-64544?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-64544?
CVE-2026-64544 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-64544?
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-4qp2-jghx-88mp",
  "modified" : "2026-07-27T21:31:26Z",
  "published" : "2026-07-27T21:31:26Z",
  "aliases" : [ "CVE-2026-64544" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: asymmetric_keys - fix OOB read in pefile_digest_pe_contents\n\npefile_digest_pe_contents() computes the trailing-data hash length as\npelen - (hashed_bytes + certs_size). A crafted PE can make the addition\nexceed pelen, causing the unsigned subtraction to underflow to ~4 GiB.\nThis is passed to crypto_shash_update() which reads out of bounds and\npanics on unmapped vmalloc guard pages.\n\n BUG: unable to handle page fault for address: ffffc900038d8000\n Oops: Oops: 0000 [#1] SMP KASAN NOPTI\n RIP: 0010:sha256_blocks_generic (lib/crypto/sha256.c:152)\n Call Trace:\n  <TASK>\n  __sha256_update (lib/crypto/sha256.c:208)\n  crypto_sha256_update (crypto/sha256.c:142)\n  verify_pefile_signature (crypto/asymmetric_keys/verify_pefile.c:436)\n  kexec_kernel_verify_pe_sig (kernel/kexec_file.c:151)\n  __do_sys_kexec_file_load (kernel/kexec_file.c:406)\n  do_syscall_64 (arch/x86/entry/syscall_64.c:94)\n  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n  </TASK>\n Kernel panic - not syncing: Fatal exception\n\nValidate that the addition does not overflow and the result does not\nexceed pelen before the subtraction. Return -ELIBBAD on failure.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-64544"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/627938383761fb4334b41ebe7ef438d6b8b19d60"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6acd2fbd00f9c72aebefce63fc2e73e8f3d79061"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7016377699b5b25b7ec3c0bf2ec3f983c7e95f7c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/803591785d33cf13b6f73ce2796e8b9e6d5e6526"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/89efd998470a93284b7ad5a20d4e0e3c6858ae8e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b798ada5a5d1cb4cc4cfa72074b1b463eca6c506"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e162bc386e71b5412425a38ee048e8d2185491b9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f7dd32c5179d7755de18e21d5674b08f9e5cb180"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-27T21:17:06Z"
  }
}