CVE-2025-40089
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-40089
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40089.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-40089
- Downstream
- Published
- 2025-10-30T09:47:57Z
- Modified
- 2025-10-30T21:11:20.643402Z
- Summary
- cxl/features: Add check for no entries in cxl_feature_info
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
cxl/features: Add check for no entries in cxlfeatureinfo
cxl EDAC calls cxlfeatureinfo() to get the feature information and if the hardware has no Features support, cxlfs may be passed in as NULL.
[ 51.957498] BUG: kernel NULL pointer dereference, address: 0000000000000008 [ 51.965571] #PF: supervisor read access in kernel mode [ 51.971559] #PF: errorcode(0x0000) - not-present page [ 51.977542] PGD 17e4f6067 P4D 0 [ 51.981384] Oops: Oops: 0000 [#1] SMP NOPTI [ 51.986300] CPU: 49 UID: 0 PID: 3782 Comm: systemd-udevd Not tainted 6.17.0dj test+ #64 PREEMPT(voluntary) [ 51.997355] Hardware name: <removed> [ 52.009790] RIP: 0010:cxlfeatureinfo+0xa/0x80 [cxlcore]
Add a check for cxlfs before dereferencing it and return -EOPNOTSUPP if there is no cxlfs created due to no hardware support.
- 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
-
Introducedeb5dfcb9e36d0e46089fec777d911313c1876fa3Fixedb8a69e3b1a460bf5d96dd53cbd121aa2cd346886
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedeb5dfcb9e36d0e46089fec777d911313c1876fa3Fixeda375246fcf2bbdaeb1df7fa7ee5a8b884a89085e
Affected versions
v6.*
Database specific
vanir_signatures
[
{
"id": "CVE-2025-40089-2c45af60",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Function",
"digest": {
"function_hash": "191990183656980911067520781729212425738",
"length": 279.0
},
"target": {
"file": "drivers/cxl/core/features.c",
"function": "cxl_feature_info"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b8a69e3b1a460bf5d96dd53cbd121aa2cd346886"
},
{
"id": "CVE-2025-40089-499662fd",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"line_hashes": [
"220749862415803776981862779774907847980",
"43868886440312152756810373420291314294",
"245145765832751321753267420268758368664"
],
"threshold": 0.9
},
"target": {
"file": "drivers/cxl/core/features.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a375246fcf2bbdaeb1df7fa7ee5a8b884a89085e"
},
{
"id": "CVE-2025-40089-9b2d9aa4",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"line_hashes": [
"220749862415803776981862779774907847980",
"43868886440312152756810373420291314294",
"245145765832751321753267420268758368664"
],
"threshold": 0.9
},
"target": {
"file": "drivers/cxl/core/features.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b8a69e3b1a460bf5d96dd53cbd121aa2cd346886"
},
{
"id": "CVE-2025-40089-cb956459",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Function",
"digest": {
"function_hash": "191990183656980911067520781729212425738",
"length": 279.0
},
"target": {
"file": "drivers/cxl/core/features.c",
"function": "cxl_feature_info"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a375246fcf2bbdaeb1df7fa7ee5a8b884a89085e"
}
]