ghsa-c72w-7535-v29m
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
cxl/features: Add check for no entries in cxl_feature_info
cxl EDAC calls cxl_feature_info() 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: error_code(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: [ 52.009790] RIP: 0010:cxl_feature_info+0xa/0x80 [cxl_core]
Add a check for cxlfs before dereferencing it and return -EOPNOTSUPP if there is no cxlfs created due to no hardware support.
{
"affected": [],
"aliases": [
"CVE-2025-40089"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-30T10:15:33Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/features: Add check for no entries in cxl_feature_info\n\ncxl EDAC calls cxl_feature_info() to get the feature information and\nif the hardware has no Features support, cxlfs may be passed in as\nNULL.\n\n[ 51.957498] BUG: kernel NULL pointer dereference, address: 0000000000000008\n[ 51.965571] #PF: supervisor read access in kernel mode\n[ 51.971559] #PF: error_code(0x0000) - not-present page\n[ 51.977542] PGD 17e4f6067 P4D 0\n[ 51.981384] Oops: Oops: 0000 [#1] SMP NOPTI\n[ 51.986300] CPU: 49 UID: 0 PID: 3782 Comm: systemd-udevd Not tainted 6.17.0dj\ntest+ #64 PREEMPT(voluntary)\n[ 51.997355] Hardware name: \u003cremoved\u003e\n[ 52.009790] RIP: 0010:cxl_feature_info+0xa/0x80 [cxl_core]\n\nAdd a check for cxlfs before dereferencing it and return -EOPNOTSUPP if\nthere is no cxlfs created due to no hardware support.",
"id": "GHSA-c72w-7535-v29m",
"modified": "2025-10-30T12:31:09Z",
"published": "2025-10-30T12:31:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40089"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a375246fcf2bbdaeb1df7fa7ee5a8b884a89085e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b8a69e3b1a460bf5d96dd53cbd121aa2cd346886"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
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