{"cve":"CVE-2025-38581","nvd":{"published":"2025-08-19T17:15:35.280","modified":"2026-06-17T09:17:09.373","status":"Analyzed","description":"In 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 '0000:0a:00.2' > /sys/bus/pci/drivers/ccp/unbind\n$ echo '0000:0a:00.2' > /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]  <TASK>\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 <48> 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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-476"],"references":["https://git.kernel.org/stable/c/181698af38d3f93381229ad89c09b5bd0496661a","https://git.kernel.org/stable/c/20c0ed8dd65834e6bab464f54cd6ff68659bacb9","https://git.kernel.org/stable/c/2d4060f05e74dbee884ba723f6afd9282befc3c5","https://git.kernel.org/stable/c/64ec9a7e7a6398b172ab6feba60e952163a1c3d5","https://git.kernel.org/stable/c/6eadf50c1d894cb34f3237064063207460946040"],"products":["debian:debian_linux","linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:07:46.309729541+00:00"},"epss":{"cve":"CVE-2025-38581","score":0.00183,"percentile":0.07903,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}