CVE-2026-64065: Software Security Vulnerability Vulnerability

MODERATE

Advisory Identifier: GHSA-23r9-pmc9-fcx4

CVSS 5.5

Published 2026-07-19

Advisory Summary

CVE-2026-64065 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-64065 at a Glance

CVE Identifier CVE-2026-64065

GHSA Identifier GHSA-23r9-pmc9-fcx4

Severity MODERATE

CVSS v3.1 Base Score 5.5

CWE Classification General Security Weakness

Affected Product Software

Package Ecosystem Maven

Published Date 2026-07-19

Last Updated 2026-09-03

Security Impact

CVSS: 5.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Local (AV:L)

Attack Complexity Low (AC:L)

Privileges Required Low (PR:L)

User Interaction None (UI:N)

Scope Unchanged (S:U)

Confidentiality None (C:N)

Integrity None (I:N)

Availability High (A:H)

How to Fix CVE-2026-64065

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-2026-64065, 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: netfs: fix VM_BUG_ON_FOLIO() issue in netfs_write_begin() call The multiple runs of generic/013 test-case is capable to reproduce a kernel BUG at mm/filemap.c:1504 with probability of 30%. while true; do sudo ./check generic/013 done [ 9849.452376] page: refcount:3 mapcount:0 mapping:00000000e58ff252 index:0x10781 pfn:0x1c322 [ 9849.452412] memcg:ffff8881a1915800 [ 9849.452417] aops:ceph_aops ino:1000058db9e dentry name(?):"f9XXXXXX" [ 9849.452432] flags: 0x17ffffc0000000(node=0|zone=2|lastcpupid=0x1fffff) [ 9849.452441] raw: 0017ffffc0000000 0000000000000000 dead000000000122 ffff88816110d248 [ 9849.452445] raw: 0000000000010781 0000000000000000 00000003ffffffff ffff8881a1915800 [ 9849.452447] page dumped because: VM_BUG_ON_FOLIO(!folio_test_locked(folio)) [ 9849.452474] ------------[ cut here ]------------ [ 9849.452476] kernel BUG at mm/filemap.c:1504! [ 9849.478635] Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI [ 9849.481772] CPU: 2 UID: 0 PID: 84223 Comm: fsstress Not tainted 7.0.0-rc1+ #18 PREEMPT(full) [ 9849.482881] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-9.fc43 06/1 0/2025 [ 9849.484539] RIP: 0010:folio_unlock+0x85/0xa0 [ 9849.485076] Code: 89 df 31 f6 e8 1c f3 ff ff 48 8b 5d f8 c9 31 c0 31 d2 31 f6 31 ff c3 cc cc cc cc 48 c7 c6 80 6c d9 a7 48 89 df e8 4b b3 10 00 <0f> 0b 48 89 df e8 21 e6 2c 00 eb 9d 0f 1f 40 00 66 66 2e 0f 1f 84 [ 9849.493818] RSP: 0018:ffff8881bb8076b0 EFLAGS: 00010246 [ 9849.495740] RAX: 0000000000000000 RBX: ffffea00070c8980 RCX: 0000000000000000 [ 9849.498678] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 9849.500559] RBP: ffff8881bb8076b8 R08: 0000000000000000 R09: 0000000000000000 [ 9849.501097] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000010782000 [ 9849.502108] R13: ffff8881935de738 R14: ffff88816110d010 R15: 0000000000001000 [ 9849.502516] FS: 00007e36cbe94740(0000) GS:ffff88824a899000(0000) knlGS:0000000000000000 [ 9849.502996] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 9849.503810] CR2: 000000c0002b0000 CR3: 000000011bbf6004 CR4: 0000000000772ef0 [ 9849.504459] PKRU: 55555554 [ 9849.504626] Call Trace: [ 9849.505242] <TASK> [ 9849.505379] netfs_write_begin+0x7c8/0x10a0 [ 9849.505877] ? __kasan_check_read+0x11/0x20 [ 9849.506384] ? __pfx_netfs_write_begin+0x10/0x10 [ 9849.507178] ceph_write_begin+0x8c/0x1c0 [ 9849.507934] generic_perform_write+0x391/0x8f0 [ 9849.508503] ? __pfx_generic_perform_write+0x10/0x10 [ 9849.509062] ? file_update_time_flags+0x19a/0x4b0 [ 9849.509581] ? ceph_get_caps+0x63/0xf0 [ 9849.510259] ? ceph_get_caps+0x63/0xf0 [ 9849.510530] ceph_write_iter+0xe79/0x1ae0 [ 9849.511282] ? __pfx_ceph_write_iter+0x10/0x10 [ 9849.511839] ? lock_acquire+0x1ad/0x310 [ 9849.512334] ? ksys_write+0xf9/0x230 [ 9849.512582] ? lock_is_held_type+0xaa/0x140 [ 9849.513128] vfs_write+0x512/0x1110 [ 9849.513634] ? __fget_files+0x33/0x350 [ 9849.513893] ? __pfx_vfs_write+0x10/0x10 [ 9849.514143] ? mutex_lock_nested+0x1b/0x30 [ 9849.514394] ksys_write+0xf9/0x230 [ 9849.514621] ? __pfx_ksys_write+0x10/0x10 [ 9849.514887] ? do_syscall_64+0x25e/0x1520 [ 9849.515122] ? __kasan_check_read+0x11/0x20 [ 9849.515366] ? trace_hardirqs_on_prepare+0x178/0x1c0 [ 9849.515655] __x64_sys_write+0x72/0xd0 [ 9849.515885] ? trace_hardirqs_on+0x24/0x1c0 [ 9849.516130] x64_sys_call+0x22f/0x2390 [ 9849.516341] do_syscall_64+0x12b/0x1520 [ 9849.516545] ? do_syscall_64+0x27c/0x1520 [ 9849.516783] ? do_syscall_64+0x27c/0x1520 [ 9849.517003] ? lock_release+0x318/0x480 [ 9849.517220] ? __x64_sys_io_getevents+0x143/0x2d0 [ 9849.517479] ? percpu_ref_put_many.constprop.0+0x8f/0x210 [ 9849.517779] ? entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 9849.518073] ? do_syscall_64+0x25e/0x1520 [ 9849.518291] ? __kasan_check_read+0x11/0x20 [ 9849.518519] ? trace_hardirqs_on_prepare+0x178/0x1c0 [ 9849.518799] ? do_syscall_64+0x27c/0x1520 [ 9 ---truncated---

References

NVD — CVE-2026-64065 NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-64065

git.kernel.org/stable/c/51ffb788f0... WEB

https://git.kernel.org/stable/c/51ffb788f074c0a61953086f49008028c1e7b645

git.kernel.org/stable/c/5ad05b6f5d... WEB

https://git.kernel.org/stable/c/5ad05b6f5df296ef046589f222bb2587495b991e

git.kernel.org/stable/c/b63971238b... WEB

https://git.kernel.org/stable/c/b63971238beb79cf701dac33c6cefc56c07c89fa

git.kernel.org/stable/c/dc7832d05d... WEB

https://git.kernel.org/stable/c/dc7832d05deb4d632e8035e3299e31a3528fa0d0

Frequently Asked Questions

What is CVE-2026-64065?

CVE-2026-64065 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-2026-64065?

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

What is the CVSS score of CVE-2026-64065?

CVE-2026-64065 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

What CWE is associated with CVE-2026-64065?

CVE-2026-64065 is classified under General Security Weakness.

How can I check Maven dependencies for CVE-2026-64065?

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-23r9-pmc9-fcx4",
  "modified" : "2026-09-03T18:31:15Z",
  "published" : "2026-07-19T18:31:51Z",
  "aliases" : [ "CVE-2026-64065" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: fix VM_BUG_ON_FOLIO() issue in netfs_write_begin() call\n\nThe multiple runs of generic/013 test-case is capable\nto reproduce a kernel BUG at mm/filemap.c:1504 with\nprobability of 30%.\n\nwhile true; do\n  sudo ./check generic/013\ndone\n\n[ 9849.452376] page: refcount:3 mapcount:0 mapping:00000000e58ff252 index:0x10781 pfn:0x1c322\n[ 9849.452412] memcg:ffff8881a1915800\n[ 9849.452417] aops:ceph_aops ino:1000058db9e dentry name(?):\"f9XXXXXX\"\n[ 9849.452432] flags: 0x17ffffc0000000(node=0|zone=2|lastcpupid=0x1fffff)\n[ 9849.452441] raw: 0017ffffc0000000 0000000000000000 dead000000000122 ffff88816110d248\n[ 9849.452445] raw: 0000000000010781 0000000000000000 00000003ffffffff ffff8881a1915800\n[ 9849.452447] page dumped because: VM_BUG_ON_FOLIO(!folio_test_locked(folio))\n[ 9849.452474] ------------[ cut here ]------------\n[ 9849.452476] kernel BUG at mm/filemap.c:1504!\n[ 9849.478635] Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI\n[ 9849.481772] CPU: 2 UID: 0 PID: 84223 Comm: fsstress Not tainted 7.0.0-rc1+ #18 PREEMPT(full)\n[ 9849.482881] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-9.fc43 06/1\n0/2025\n[ 9849.484539] RIP: 0010:folio_unlock+0x85/0xa0\n[ 9849.485076] Code: 89 df 31 f6 e8 1c f3 ff ff 48 8b 5d f8 c9 31 c0 31 d2 31 f6 31 ff c3 cc\ncc cc cc 48 c7 c6 80 6c d9 a7 48 89 df e8 4b b3 10 00 <0f> 0b 48 89 df e8 21 e6 2c 00 eb 9d 0f 1f 40 00 66 66 2e 0f 1f 84\n[ 9849.493818] RSP: 0018:ffff8881bb8076b0 EFLAGS: 00010246\n[ 9849.495740] RAX: 0000000000000000 RBX: ffffea00070c8980 RCX: 0000000000000000\n[ 9849.498678] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000\n[ 9849.500559] RBP: ffff8881bb8076b8 R08: 0000000000000000 R09: 0000000000000000\n[ 9849.501097] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000010782000\n[ 9849.502108] R13: ffff8881935de738 R14: ffff88816110d010 R15: 0000000000001000\n[ 9849.502516] FS:  00007e36cbe94740(0000) GS:ffff88824a899000(0000) knlGS:0000000000000000\n[ 9849.502996] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 9849.503810] CR2: 000000c0002b0000 CR3: 000000011bbf6004 CR4: 0000000000772ef0\n[ 9849.504459] PKRU: 55555554\n[ 9849.504626] Call Trace:\n[ 9849.505242]  <TASK>\n[ 9849.505379]  netfs_write_begin+0x7c8/0x10a0\n[ 9849.505877]  ? __kasan_check_read+0x11/0x20\n[ 9849.506384]  ? __pfx_netfs_write_begin+0x10/0x10\n[ 9849.507178]  ceph_write_begin+0x8c/0x1c0\n[ 9849.507934]  generic_perform_write+0x391/0x8f0\n[ 9849.508503]  ? __pfx_generic_perform_write+0x10/0x10\n[ 9849.509062]  ? file_update_time_flags+0x19a/0x4b0\n[ 9849.509581]  ? ceph_get_caps+0x63/0xf0\n[ 9849.510259]  ? ceph_get_caps+0x63/0xf0\n[ 9849.510530]  ceph_write_iter+0xe79/0x1ae0\n[ 9849.511282]  ? __pfx_ceph_write_iter+0x10/0x10\n[ 9849.511839]  ? lock_acquire+0x1ad/0x310\n[ 9849.512334]  ? ksys_write+0xf9/0x230\n[ 9849.512582]  ? lock_is_held_type+0xaa/0x140\n[ 9849.513128]  vfs_write+0x512/0x1110\n[ 9849.513634]  ? __fget_files+0x33/0x350\n[ 9849.513893]  ? __pfx_vfs_write+0x10/0x10\n[ 9849.514143]  ? mutex_lock_nested+0x1b/0x30\n[ 9849.514394]  ksys_write+0xf9/0x230\n[ 9849.514621]  ? __pfx_ksys_write+0x10/0x10\n[ 9849.514887]  ? do_syscall_64+0x25e/0x1520\n[ 9849.515122]  ? __kasan_check_read+0x11/0x20\n[ 9849.515366]  ? trace_hardirqs_on_prepare+0x178/0x1c0\n[ 9849.515655]  __x64_sys_write+0x72/0xd0\n[ 9849.515885]  ? trace_hardirqs_on+0x24/0x1c0\n[ 9849.516130]  x64_sys_call+0x22f/0x2390\n[ 9849.516341]  do_syscall_64+0x12b/0x1520\n[ 9849.516545]  ? do_syscall_64+0x27c/0x1520\n[ 9849.516783]  ? do_syscall_64+0x27c/0x1520\n[ 9849.517003]  ? lock_release+0x318/0x480\n[ 9849.517220]  ? __x64_sys_io_getevents+0x143/0x2d0\n[ 9849.517479]  ? percpu_ref_put_many.constprop.0+0x8f/0x210\n[ 9849.517779]  ? entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[ 9849.518073]  ? do_syscall_64+0x25e/0x1520\n[ 9849.518291]  ? __kasan_check_read+0x11/0x20\n[ 9849.518519]  ? trace_hardirqs_on_prepare+0x178/0x1c0\n[ 9849.518799]  ? do_syscall_64+0x27c/0x1520\n[ 9\n---truncated---",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-64065"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/51ffb788f074c0a61953086f49008028c1e7b645"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5ad05b6f5df296ef046589f222bb2587495b991e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b63971238beb79cf701dac33c6cefc56c07c89fa"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/dc7832d05deb4d632e8035e3299e31a3528fa0d0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-19T16:17:47Z"
  }
}

CVSS V3

5.5 MODERATE