smb: client: reject userspace cifs.spnego descriptions
cifs.spnego key descriptions contain authority-bearing fields such as
pid, uid, creduid, and upcall_target that cifs.upcall treats as
kernel-originating inputs. However, userspace can also create keys of
this type through request_key(2) or add_key(2), allowing those fields to
be supplied without CIFS origin.
Only accept cifs.spnego descriptions while CIFS is using its private
spnego_cred to request the key.
Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Tue, 09 Jun 2026 21:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | NVD-CWE-noinfo | |
| CPEs | cpe:2.3:o:linux:linux_kernel:2.6.24:-:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.24:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.24:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.24:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.24:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.24:rc7:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.24:rc8:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* |
Fri, 05 Jun 2026 06:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
cvssV3_1
|
cvssV3_1
|
Tue, 02 Jun 2026 12:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-825 | |
| References |
| |
| Metrics |
threat_severity
|
threat_severity
|
Mon, 01 Jun 2026 22:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-285 |
Mon, 01 Jun 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
Mon, 01 Jun 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Mon, 01 Jun 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Linux kernel
|
|
| Weaknesses | CWE-20 CWE-285 |
|
| Vendors & Products |
Linux kernel
|
|
| References |
| |
| Metrics |
cvssV3_1
|
Mon, 01 Jun 2026 17:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In the Linux kernel, the following vulnerability has been resolved: smb: client: reject userspace cifs.spnego descriptions cifs.spnego key descriptions contain authority-bearing fields such as pid, uid, creduid, and upcall_target that cifs.upcall treats as kernel-originating inputs. However, userspace can also create keys of this type through request_key(2) or add_key(2), allowing those fields to be supplied without CIFS origin. Only accept cifs.spnego descriptions while CIFS is using its private spnego_cred to request the key. | |
| Title | smb: client: reject userspace cifs.spnego descriptions | |
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| References |
|
|
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-06-30T02:41:30.626Z
Reserved: 2026-05-13T15:03:33.107Z
Link: CVE-2026-46243
Updated: 2026-06-01T18:55:00.540Z
Status : Analyzed
Published: 2026-06-01T17:17:34.173
Modified: 2026-06-09T20:47:29.000
Link: CVE-2026-46243
OpenCVE Enrichment
Updated: 2026-06-09T23:30:05Z