CVE-2025-21866: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-p4mq-5hwr-hc6r
Share
CVSS 5.5
CWE-770
Published
Advisory Summary

CVE-2025-21866 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (CWE-770: Allocation of Resources Without Limits or Throttling) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.. Remediation is available in the latest vendor maintenance releases.

CVE-2025-21866 at a Glance

CVE Identifier CVE-2025-21866
GHSA Identifier GHSA-p4mq-5hwr-hc6r
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-770: Allocation of Resources Without Limits or Throttling
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

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-2025-21866

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-2025-21866, 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 CWE-770: Allocation of Resources Without Limits or Throttling, where the product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated. 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: powerpc/code-patching: Fix KASAN hit by not flagging text patching area as VM_ALLOC Erhard reported the following KASAN hit while booting his PowerMac G4 with a KASAN-enabled kernel 6.13-rc6: BUG: KASAN: vmalloc-out-of-bounds in copy_to_kernel_nofault+0xd8/0x1c8 Write of size 8 at addr f1000000 by task chronyd/1293 CPU: 0 UID: 123 PID: 1293 Comm: chronyd Tainted: G W 6.13.0-rc6-PMacG4 #2 Tainted: [W]=WARN Hardware name: PowerMac3,6 7455 0x80010303 PowerMac Call Trace: [c2437590] [c1631a84] dump_stack_lvl+0x70/0x8c (unreliable) [c24375b0] [c0504998] print_report+0xdc/0x504 [c2437610] [c050475c] kasan_report+0xf8/0x108 [c2437690] [c0505a3c] kasan_check_range+0x24/0x18c [c24376a0] [c03fb5e4] copy_to_kernel_nofault+0xd8/0x1c8 [c24376c0] [c004c014] patch_instructions+0x15c/0x16c [c2437710] [c00731a8] bpf_arch_text_copy+0x60/0x7c [c2437730] [c0281168] bpf_jit_binary_pack_finalize+0x50/0xac [c2437750] [c0073cf4] bpf_int_jit_compile+0xb30/0xdec [c2437880] [c0280394] bpf_prog_select_runtime+0x15c/0x478 [c24378d0] [c1263428] bpf_prepare_filter+0xbf8/0xc14 [c2437990] [c12677ec] bpf_prog_create_from_user+0x258/0x2b4 [c24379d0] [c027111c] do_seccomp+0x3dc/0x1890 [c2437ac0] [c001d8e0] system_call_exception+0x2dc/0x420 [c2437f30] [c00281ac] ret_from_syscall+0x0/0x2c --- interrupt: c00 at 0x5a1274 NIP: 005a1274 LR: 006a3b3c CTR: 005296c8 REGS: c2437f40 TRAP: 0c00 Tainted: G W (6.13.0-rc6-PMacG4) MSR: 0200f932 <VEC,EE,PR,FP,ME,IR,DR,RI> CR: 24004422 XER: 00000000 GPR00: 00000166 af8f3fa0 a7ee3540 00000001 00000000 013b6500 005a5858 0200f932 GPR08: 00000000 00001fe9 013d5fc8 005296c8 2822244c 00b2fcd8 00000000 af8f4b57 GPR16: 00000000 00000001 00000000 00000000 00000000 00000001 00000000 00000002 GPR24: 00afdbb0 00000000 00000000 00000000 006e0004 013ce060 006e7c1c 00000001 NIP [005a1274] 0x5a1274 LR [006a3b3c] 0x6a3b3c --- interrupt: c00 The buggy address belongs to the virtual mapping at [f1000000, f1002000) created by: text_area_cpu_up+0x20/0x190 The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:00000000 index:0x0 pfn:0x76e30 flags: 0x80000000(zone=2) raw: 80000000 00000000 00000122 00000000 00000000 00000000 ffffffff 00000001 raw: 00000000 page dumped because: kasan: bad access detected Memory state around the buggy address: f0ffff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f0ffff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >f1000000: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ^ f1000080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f1000100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ================================================================== f8 corresponds to KASAN_VMALLOC_INVALID which means the area is not initialised hence not supposed to be used yet. Powerpc text patching infrastructure allocates a virtual memory area using get_vm_area() and flags it as VM_ALLOC. But that flag is meant to be used for vmalloc() and vmalloc() allocated memory is not supposed to be used before a call to __vmalloc_node_range() which is never called for that area. That went undetected until commit e4137f08816b ("mm, kasan, kmsan: instrument copy_from/to_kernel_nofault") The area allocated by text_area_cpu_up() is not vmalloc memory, it is mapped directly on demand when needed by map_kernel_page(). There is no VM flag corresponding to such usage, so just pass no flag. That way the area will be unpoisonned and usable immediately.

References

NVD — CVE-2025-21866 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-21866
git.kernel.org/stable/c/2d542f13d2... WEB
https://git.kernel.org/stable/c/2d542f13d26344e3452eee77613026ce9b653065
git.kernel.org/stable/c/2e6c80423f... WEB
https://git.kernel.org/stable/c/2e6c80423f201405fd65254e52decd21663896f3
git.kernel.org/stable/c/6847b3e40b... WEB
https://git.kernel.org/stable/c/6847b3e40bb963e57b61d1cc6fe84cb37b9d3d4c
git.kernel.org/stable/c/8d06e92081... WEB
https://git.kernel.org/stable/c/8d06e9208184b2851fa79a3a39d6860320c8bdf8
git.kernel.org/stable/c/97de585205... WEB
https://git.kernel.org/stable/c/97de5852058a299ba447cd9782fe96488d30108b
git.kernel.org/stable/c/c905a30535... WEB
https://git.kernel.org/stable/c/c905a3053518212a1017e50bd2be3bee59305bb0
git.kernel.org/stable/c/d262a192d3... WEB
https://git.kernel.org/stable/c/d262a192d38e527faa5984629aabda2e0d1c4f54
git.kernel.org/stable/c/f8d4c5b653... WEB
https://git.kernel.org/stable/c/f8d4c5b653c1bc0df56e15658bbf64fc359adc4e
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

Frequently Asked Questions

What is CVE-2025-21866?
CVE-2025-21866 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-770: Allocation of Resources Without Limits or Throttling.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2025-21866?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2025-21866?
CVE-2025-21866 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-2025-21866?
CVE-2025-21866 is classified under CWE-770: Allocation of Resources Without Limits or Throttling (The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.).
How can I check Maven dependencies for CVE-2025-21866?
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-p4mq-5hwr-hc6r",
  "modified" : "2025-11-03T21:33:10Z",
  "published" : "2025-03-12T12:30:59Z",
  "aliases" : [ "CVE-2025-21866" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/code-patching: Fix KASAN hit by not flagging text patching area as VM_ALLOC\n\nErhard reported the following KASAN hit while booting his PowerMac G4\nwith a KASAN-enabled kernel 6.13-rc6:\n\n  BUG: KASAN: vmalloc-out-of-bounds in copy_to_kernel_nofault+0xd8/0x1c8\n  Write of size 8 at addr f1000000 by task chronyd/1293\n\n  CPU: 0 UID: 123 PID: 1293 Comm: chronyd Tainted: G        W          6.13.0-rc6-PMacG4 #2\n  Tainted: [W]=WARN\n  Hardware name: PowerMac3,6 7455 0x80010303 PowerMac\n  Call Trace:\n  [c2437590] [c1631a84] dump_stack_lvl+0x70/0x8c (unreliable)\n  [c24375b0] [c0504998] print_report+0xdc/0x504\n  [c2437610] [c050475c] kasan_report+0xf8/0x108\n  [c2437690] [c0505a3c] kasan_check_range+0x24/0x18c\n  [c24376a0] [c03fb5e4] copy_to_kernel_nofault+0xd8/0x1c8\n  [c24376c0] [c004c014] patch_instructions+0x15c/0x16c\n  [c2437710] [c00731a8] bpf_arch_text_copy+0x60/0x7c\n  [c2437730] [c0281168] bpf_jit_binary_pack_finalize+0x50/0xac\n  [c2437750] [c0073cf4] bpf_int_jit_compile+0xb30/0xdec\n  [c2437880] [c0280394] bpf_prog_select_runtime+0x15c/0x478\n  [c24378d0] [c1263428] bpf_prepare_filter+0xbf8/0xc14\n  [c2437990] [c12677ec] bpf_prog_create_from_user+0x258/0x2b4\n  [c24379d0] [c027111c] do_seccomp+0x3dc/0x1890\n  [c2437ac0] [c001d8e0] system_call_exception+0x2dc/0x420\n  [c2437f30] [c00281ac] ret_from_syscall+0x0/0x2c\n  --- interrupt: c00 at 0x5a1274\n  NIP:  005a1274 LR: 006a3b3c CTR: 005296c8\n  REGS: c2437f40 TRAP: 0c00   Tainted: G        W           (6.13.0-rc6-PMacG4)\n  MSR:  0200f932 <VEC,EE,PR,FP,ME,IR,DR,RI>  CR: 24004422  XER: 00000000\n\n  GPR00: 00000166 af8f3fa0 a7ee3540 00000001 00000000 013b6500 005a5858 0200f932\n  GPR08: 00000000 00001fe9 013d5fc8 005296c8 2822244c 00b2fcd8 00000000 af8f4b57\n  GPR16: 00000000 00000001 00000000 00000000 00000000 00000001 00000000 00000002\n  GPR24: 00afdbb0 00000000 00000000 00000000 006e0004 013ce060 006e7c1c 00000001\n  NIP [005a1274] 0x5a1274\n  LR [006a3b3c] 0x6a3b3c\n  --- interrupt: c00\n\n  The buggy address belongs to the virtual mapping at\n   [f1000000, f1002000) created by:\n   text_area_cpu_up+0x20/0x190\n\n  The buggy address belongs to the physical page:\n  page: refcount:1 mapcount:0 mapping:00000000 index:0x0 pfn:0x76e30\n  flags: 0x80000000(zone=2)\n  raw: 80000000 00000000 00000122 00000000 00000000 00000000 ffffffff 00000001\n  raw: 00000000\n  page dumped because: kasan: bad access detected\n\n  Memory state around the buggy address:\n   f0ffff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n   f0ffff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n  >f1000000: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8\n             ^\n   f1000080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8\n   f1000100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8\n  ==================================================================\n\nf8 corresponds to KASAN_VMALLOC_INVALID which means the area is not\ninitialised hence not supposed to be used yet.\n\nPowerpc text patching infrastructure allocates a virtual memory area\nusing get_vm_area() and flags it as VM_ALLOC. But that flag is meant\nto be used for vmalloc() and vmalloc() allocated memory is not\nsupposed to be used before a call to __vmalloc_node_range() which is\nnever called for that area.\n\nThat went undetected until commit e4137f08816b (\"mm, kasan, kmsan:\ninstrument copy_from/to_kernel_nofault\")\n\nThe area allocated by text_area_cpu_up() is not vmalloc memory, it is\nmapped directly on demand when needed by map_kernel_page(). There is\nno VM flag corresponding to such usage, so just pass no flag. That way\nthe area will be unpoisonned and usable immediately.",
  "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-2025-21866"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2d542f13d26344e3452eee77613026ce9b653065"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2e6c80423f201405fd65254e52decd21663896f3"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6847b3e40bb963e57b61d1cc6fe84cb37b9d3d4c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8d06e9208184b2851fa79a3a39d6860320c8bdf8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/97de5852058a299ba447cd9782fe96488d30108b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c905a3053518212a1017e50bd2be3bee59305bb0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d262a192d38e527faa5984629aabda2e0d1c4f54"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f8d4c5b653c1bc0df56e15658bbf64fc359adc4e"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-770" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2025-03-12T10:15:19Z"
  }
}