{"id":"DEBIAN-CVE-2025-38581","details":"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' \u003e /sys/bus/pci/drivers/ccp/unbind $ echo '0000:0a:00.2' \u003e /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]  \u003cTASK\u003e [  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 \u003c48\u003e 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.","modified":"2026-09-01T16:06:15.077397457Z","published":"2025-08-19T17:15:35.280Z","upstream":["CVE-2025-38581"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-38581"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.148-1"}]}],"versions":["6.1.106-1","6.1.106-2","6.1.106-3","6.1.112-1","6.1.115-1","6.1.119-1","6.1.123-1","6.1.124-1","6.1.128-1","6.1.129-1","6.1.133-1","6.1.135-1","6.1.137-1","6.1.139-1","6.1.140-1","6.1.147-1","6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1","6.1.82-1","6.1.85-1","6.1.90-1","6.1.90-1~bpo11+1","6.1.94-1","6.1.94-1~bpo11+1","6.1.98-1","6.1.99-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38581.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.43-1"}]}],"versions":["6.12.38-1","6.12.41-1","6.12.43-1~bpo12+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38581.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.16.3-1"}]}],"versions":["6.12.100-1","6.12.101-1","6.12.105-1","6.12.107-1","6.12.38-1","6.12.41-1","6.12.43-1","6.12.43-1~bpo12+1","6.12.48-1","6.12.57-1","6.12.57-1~bpo12+1","6.12.63-1","6.12.63-1~bpo12+1","6.12.69-1","6.12.69-1~bpo12+1","6.12.73-1","6.12.73-1~bpo12+1","6.12.74-1","6.12.74-2","6.12.74-2~bpo12+1","6.12.85-1","6.12.85-1~bpo12+1","6.12.86-1","6.12.86-1~bpo12+1","6.12.88-1","6.12.88-1~bpo12+1","6.12.90-1","6.12.90-1~bpo12+1","6.12.90-2","6.12.90-2~bpo12+1","6.12.94-1","6.12.94-1~bpo12+1","6.12.95-1","6.12.95-1~bpo12+1","6.12.96-1","6.13.10-1~exp1","6.13.11-1~exp1","6.13.2-1~exp1","6.13.3-1~exp1","6.13.4-1~exp1","6.13.5-1~exp1","6.13.6-1~exp1","6.13.7-1~exp1","6.13.8-1~exp1","6.13.9-1~exp1","6.13~rc6-1~exp1","6.13~rc7-1~exp1","6.14.3-1~exp1","6.14.5-1~exp1","6.14.6-1~exp1","6.15-1~exp1","6.15.1-1~exp1","6.15.2-1~exp1","6.15.3-1~exp1","6.15.4-1~exp1","6.15.5-1~exp1","6.15.6-1~exp1","6.15~rc7-1~exp1","6.16-1~exp1","6.16.1-1~exp1","6.16.3-1~bpo13+1","6.16~rc7-1~exp1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38581.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}