CVE-2025-38581

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2025-38581
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38581.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-38581
Downstream
Related
Published
2025-08-19T17:03:03.718Z
Modified
2026-06-18T03:55:09.481460656Z
Summary
crypto: ccp - Fix crash when rebind ccp device for ccp.ko
Details

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

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

When CONFIGCRYPTODEVCCPDEBUGFS 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: errorcode(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] startcreating+0x9f/0x1c0 [ 205.001533] debugfscreatedir+0x1f/0x170 [ 205.002769] ? srsoreturnthunk+0x5/0x5f [ 205.004000] ccp5debugfssetup+0x87/0x170 [ccp] [ 205.005241] ccp5init+0x8b2/0x960 [ccp] [ 205.006469] ccpdevinit+0xd4/0x150 [ccp] [ 205.007709] spinit+0x5f/0x80 [ccp] [ 205.008942] sppciprobe+0x283/0x2e0 [ccp] [ 205.010165] ? srsoreturnthunk+0x5/0x5f [ 205.011376] localpciprobe+0x4f/0xb0 [ 205.012584] pcideviceprobe+0xdb/0x230 [ 205.013810] really_probe+0xed/0x380 [ 205.015024] __driverprobedevice+0x7e/0x160 [ 205.016240] devicedriverattach+0x2f/0x60 [ 205.017457] bindstore+0x7c/0xb0 [ 205.018663] drvattrstore+0x28/0x40 [ 205.019868] sysfskfwrite+0x5f/0x70 [ 205.021065] kernfsfopwriteiter+0x145/0x1d0 [ 205.022267] vfswrite+0x308/0x440 [ 205.023453] ksyswrite+0x6d/0xe0 [ 205.024616] __x64syswrite+0x1e/0x30 [ 205.025778] x64syscall+0x16ba/0x2150 [ 205.026942] dosyscall64+0x56/0x1e0 [ 205.028108] entrySYSCALL64afterhwframe+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 ccpdebugfsdir to NULL after destroying it in ccp5debugfsdestroy, allowing the directory dentry to be recreated when rebinding the ccp device.

Tested on AMD Ryzen 7 1700X.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38581.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3cdbe346ed3f380eae1cb3e9febfe703e7d8a7b0
Fixed
a25ab6dfa0ce323ec308966988be6b675eb9d3e5
Fixed
ce63a83925964ab7564bd216bd92b80bc365492e
Fixed
20c0ed8dd65834e6bab464f54cd6ff68659bacb9
Fixed
2d4060f05e74dbee884ba723f6afd9282befc3c5
Fixed
db111468531777cac8b4beb6515a88a54b0c4a74
Fixed
9dea08eac4f6d6fbbae59992978252e2edab995d
Fixed
6eadf50c1d894cb34f3237064063207460946040
Fixed
64ec9a7e7a6398b172ab6feba60e952163a1c3d5
Fixed
181698af38d3f93381229ad89c09b5bd0496661a

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38581.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
4.13.0
Fixed
5.4.297
Type
ECOSYSTEM
Events
Introduced
5.5.0
Fixed
5.10.241
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.190
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.148
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.102
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.42
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.15.10
Type
ECOSYSTEM
Events
Introduced
6.16.0
Fixed
6.16.1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38581.json"