GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

OESA-2025-2123 (CVE-2025-38581)

Vulnerability from osv_openeuler – Published: 2025-09-05 11:09 – Updated: 2026-08-06 11:09 – Source website
VLAI
Summary
kernel security update
Details

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:

crypto: ccp - Fix crash when rebind ccp device for ccp.ko

When CONFIG_CRYPTO_DEV_CCP_DEBUGFS is enabled, rebinding the ccp device causes the following crash:

$ echo '0000:0a:00.2' > /sys/bus/pci/drivers/ccp/unbind $ echo '0000:0a:00.2' > /sys/bus/pci/drivers/ccp/bind

[ 204.976930] BUG: kernel NULL pointer dereference, address: 0000000000000098 [ 204.978026] #PF: supervisor write access in kernel mode [ 204.979126] #PF: error_code(0x0002) - not-present page [ 204.980226] PGD 0 P4D 0 [ 204.981317] Oops: Oops: 0002 [#1] SMP NOPTI ... [ 204.997852] Call Trace: [ 204.999074] <TASK> [ 205.000297] start_creating+0x9f/0x1c0 [ 205.001533] debugfs_create_dir+0x1f/0x170 [ 205.002769] ? srso_return_thunk+0x5/0x5f [ 205.004000] ccp5_debugfs_setup+0x87/0x170 [ccp] [ 205.005241] ccp5_init+0x8b2/0x960 [ccp] [ 205.006469] ccp_dev_init+0xd4/0x150 [ccp] [ 205.007709] sp_init+0x5f/0x80 [ccp] [ 205.008942] sp_pci_probe+0x283/0x2e0 [ccp] [ 205.010165] ? srso_return_thunk+0x5/0x5f [ 205.011376] local_pci_probe+0x4f/0xb0 [ 205.012584] pci_device_probe+0xdb/0x230 [ 205.013810] really_probe+0xed/0x380 [ 205.015024] __driver_probe_device+0x7e/0x160 [ 205.016240] device_driver_attach+0x2f/0x60 [ 205.017457] bind_store+0x7c/0xb0 [ 205.018663] drv_attr_store+0x28/0x40 [ 205.019868] sysfs_kf_write+0x5f/0x70 [ 205.021065] kernfs_fop_write_iter+0x145/0x1d0 [ 205.022267] vfs_write+0x308/0x440 [ 205.023453] ksys_write+0x6d/0xe0 [ 205.024616] __x64_sys_write+0x1e/0x30 [ 205.025778] x64_sys_call+0x16ba/0x2150 [ 205.026942] do_syscall_64+0x56/0x1e0 [ 205.028108] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 205.029276] RIP: 0033:0x7fbc36f10104 [ 205.030420] Code: 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 8d 05 e1 08 2e 00 8b 00 85 c0 75 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 f3 c3 66 90 41 54 55 49 89 d4 53 48 89 f5

This patch sets ccp_debugfs_dir to NULL after destroying it in ccp5_debugfs_destroy, allowing the directory dentry to be recreated when rebinding the ccp device.

Tested on AMD Ryzen 7 1700X.(CVE-2025-38581)

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "bpftool-4.19.90-2509.1.0.0342.oe2003sp4.aarch64.rpm",
          "bpftool-debuginfo-4.19.90-2509.1.0.0342.oe2003sp4.aarch64.rpm",
          "kernel-4.19.90-2509.1.0.0342.oe2003sp4.aarch64.rpm",
          "kernel-debuginfo-4.19.90-2509.1.0.0342.oe2003sp4.aarch64.rpm",
          "kernel-debugsource-4.19.90-2509.1.0.0342.oe2003sp4.aarch64.rpm",
          "kernel-devel-4.19.90-2509.1.0.0342.oe2003sp4.aarch64.rpm",
          "kernel-source-4.19.90-2509.1.0.0342.oe2003sp4.aarch64.rpm",
          "kernel-tools-4.19.90-2509.1.0.0342.oe2003sp4.aarch64.rpm",
          "kernel-tools-debuginfo-4.19.90-2509.1.0.0342.oe2003sp4.aarch64.rpm",
          "kernel-tools-devel-4.19.90-2509.1.0.0342.oe2003sp4.aarch64.rpm",
          "perf-4.19.90-2509.1.0.0342.oe2003sp4.aarch64.rpm",
          "perf-debuginfo-4.19.90-2509.1.0.0342.oe2003sp4.aarch64.rpm",
          "python2-perf-4.19.90-2509.1.0.0342.oe2003sp4.aarch64.rpm",
          "python2-perf-debuginfo-4.19.90-2509.1.0.0342.oe2003sp4.aarch64.rpm",
          "python3-perf-4.19.90-2509.1.0.0342.oe2003sp4.aarch64.rpm",
          "python3-perf-debuginfo-4.19.90-2509.1.0.0342.oe2003sp4.aarch64.rpm"
        ],
        "src": [
          "kernel-4.19.90-2509.1.0.0342.oe2003sp4.src.rpm"
        ],
        "x86_64": [
          "bpftool-4.19.90-2509.1.0.0342.oe2003sp4.x86_64.rpm",
          "bpftool-debuginfo-4.19.90-2509.1.0.0342.oe2003sp4.x86_64.rpm",
          "kernel-4.19.90-2509.1.0.0342.oe2003sp4.x86_64.rpm",
          "kernel-debuginfo-4.19.90-2509.1.0.0342.oe2003sp4.x86_64.rpm",
          "kernel-debugsource-4.19.90-2509.1.0.0342.oe2003sp4.x86_64.rpm",
          "kernel-devel-4.19.90-2509.1.0.0342.oe2003sp4.x86_64.rpm",
          "kernel-source-4.19.90-2509.1.0.0342.oe2003sp4.x86_64.rpm",
          "kernel-tools-4.19.90-2509.1.0.0342.oe2003sp4.x86_64.rpm",
          "kernel-tools-debuginfo-4.19.90-2509.1.0.0342.oe2003sp4.x86_64.rpm",
          "kernel-tools-devel-4.19.90-2509.1.0.0342.oe2003sp4.x86_64.rpm",
          "perf-4.19.90-2509.1.0.0342.oe2003sp4.x86_64.rpm",
          "perf-debuginfo-4.19.90-2509.1.0.0342.oe2003sp4.x86_64.rpm",
          "python2-perf-4.19.90-2509.1.0.0342.oe2003sp4.x86_64.rpm",
          "python2-perf-debuginfo-4.19.90-2509.1.0.0342.oe2003sp4.x86_64.rpm",
          "python3-perf-4.19.90-2509.1.0.0342.oe2003sp4.x86_64.rpm",
          "python3-perf-debuginfo-4.19.90-2509.1.0.0342.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "kernel",
        "purl": "pkg:rpm/openEuler/kernel\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.19.90-2509.1.0.0342.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "The Linux Kernel, the operating system core itself.\r\n\r\nSecurity Fix(es):\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccp - Fix crash when rebind ccp device for ccp.ko\n\nWhen CONFIG_CRYPTO_DEV_CCP_DEBUGFS is enabled, rebinding\nthe ccp device causes the following crash:\n\n$ echo \u0026apos;0000:0a:00.2\u0026apos; \u0026gt; /sys/bus/pci/drivers/ccp/unbind\n$ echo \u0026apos;0000:0a:00.2\u0026apos; \u0026gt; /sys/bus/pci/drivers/ccp/bind\n\n[  204.976930] BUG: kernel NULL pointer dereference, address: 0000000000000098\n[  204.978026] #PF: supervisor write access in kernel mode\n[  204.979126] #PF: error_code(0x0002) - not-present page\n[  204.980226] PGD 0 P4D 0\n[  204.981317] Oops: Oops: 0002 [#1] SMP NOPTI\n...\n[  204.997852] Call Trace:\n[  204.999074]  \u0026lt;TASK\u0026gt;\n[  205.000297]  start_creating+0x9f/0x1c0\n[  205.001533]  debugfs_create_dir+0x1f/0x170\n[  205.002769]  ? srso_return_thunk+0x5/0x5f\n[  205.004000]  ccp5_debugfs_setup+0x87/0x170 [ccp]\n[  205.005241]  ccp5_init+0x8b2/0x960 [ccp]\n[  205.006469]  ccp_dev_init+0xd4/0x150 [ccp]\n[  205.007709]  sp_init+0x5f/0x80 [ccp]\n[  205.008942]  sp_pci_probe+0x283/0x2e0 [ccp]\n[  205.010165]  ? srso_return_thunk+0x5/0x5f\n[  205.011376]  local_pci_probe+0x4f/0xb0\n[  205.012584]  pci_device_probe+0xdb/0x230\n[  205.013810]  really_probe+0xed/0x380\n[  205.015024]  __driver_probe_device+0x7e/0x160\n[  205.016240]  device_driver_attach+0x2f/0x60\n[  205.017457]  bind_store+0x7c/0xb0\n[  205.018663]  drv_attr_store+0x28/0x40\n[  205.019868]  sysfs_kf_write+0x5f/0x70\n[  205.021065]  kernfs_fop_write_iter+0x145/0x1d0\n[  205.022267]  vfs_write+0x308/0x440\n[  205.023453]  ksys_write+0x6d/0xe0\n[  205.024616]  __x64_sys_write+0x1e/0x30\n[  205.025778]  x64_sys_call+0x16ba/0x2150\n[  205.026942]  do_syscall_64+0x56/0x1e0\n[  205.028108]  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[  205.029276] RIP: 0033:0x7fbc36f10104\n[  205.030420] Code: 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 8d 05 e1 08 2e 00 8b 00 85 c0 75 13 b8 01 00 00 00 0f 05 \u0026lt;48\u0026gt; 3d 00 f0 ff ff 77 54 f3 c3 66 90 41 54 55 49 89 d4 53 48 89 f5\n\nThis patch sets ccp_debugfs_dir to NULL after destroying it in\nccp5_debugfs_destroy, allowing the directory dentry to be\nrecreated when rebinding the ccp device.\n\nTested on AMD Ryzen 7 1700X.(CVE-2025-38581)",
  "id": "OESA-2025-2123",
  "modified": "2026-08-06T11:09:12Z",
  "published": "2025-09-05T11:09:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2123"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38581"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "kernel security update",
  "upstream": [
    "CVE-2025-38581"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.