CVE-2026-46243
Detail
Modified After Enrichment
This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
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.
Metrics
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
Base
Score:
NVD assessment
not yet provided.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 Severity and Vector Strings:
Base
Score:
NVD assessment
not yet provided.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving NIST webspace.
We have provided these links to other web sites because they
may have information that would be of interest to you. No
inferences should be drawn on account of other sites being
referenced, or not, from this page. There may be other web
sites that are more appropriate for your purpose. NIST does
not necessarily endorse the views expressed, or concur with
the facts presented on these sites. Further, NIST does not
endorse any commercial products that may be mentioned on
these sites. Please address comments about this page to [email protected].
Change History
9 change records found show changes
CVE Modified by redhat-SADP
6/30/2026 1:19:29 AM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:33225
|
CVE Modified by redhat-SADP
6/29/2026 11:20:18 PM
| Action |
Type |
Old Value |
New Value |
| Added |
CVSS V3.1 |
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
|
| Added |
CWE |
CWE-825
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:23258
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:23259
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:23329
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:23395
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:24381
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:25908
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:26462
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:26515
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:26535
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:26563
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:26570
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:27708
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:27719
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:27729
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:27735
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:33219
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:33220
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:33221
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:33222
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:33223
|
| Added |
Reference |
https://access.redhat.com/errata/RHSA-2026:33224
|
| Added |
Reference |
https://access.redhat.com/security/cve/CVE-2026-46243
|
| Added |
Reference |
https://bugzilla.redhat.com/show_bug.cgi?id=2481486
|
| Added |
Reference |
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46243.json
|
| Added |
Affected |
Record truncated, showing 2048 of 7062 characters.
View Entire Change Record
[{"vendor":"Red Hat","product":"NVIDIA for RHEL 10","defaultStatus":"affected","cpes":["cpe:/a:redhat:enterprise_linux_nvidia:10::el10"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)","defaultStatus":"affected","cpes":["cpe:/o:redhat:rhel_els:6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION)","defaultStatus":"affected","cpes":["cpe:/o:redhat:rhel_els:6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux Server (v. 7 ELS)","defaultStatus":"affected","cpes":["cpe:/o:redhat:rhel_els:7"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux Server Optional (v. 7 ELS)","defaultStatus":"affected","cpes":["cpe:/o:redhat:rhel_els:7"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux AppStream EUS (v. 10.0)","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux AppStream (v. 10)","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10.2"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux AppStream E4S (v.9.2)","defaultStatus":"affected","cpes":["cpe:/a:redhat:rhel_e4s:9.2::appstream"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux AppStream E4S (v.9.4)","defaultStatus":"affected","cpes":["cpe:/a:redhat:rhel_e4s:9.4::appstream"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux AppStream EUS (v.9.6)","defaultStatus":"affected","cpes":["cpe:/a:redhat:rhel_eus:9.6::appstream"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux AppStream (v. 9)","defaultStatus":"affected","cpes":["cpe:/a:redhat:enterprise_linux:9::appstream"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux BaseOS EUS (v. 10.0)","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux BaseOS (v. 10)","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10.2"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux
|
CVE Modified by CISA-ADP
6/17/2026 6:53:23 AM
| Action |
Type |
Old Value |
New Value |
| Added |
SSVC |
{"timestamp":"2026-06-01T00:00:00+00:00","id":"CVE-2026-46243","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}
|
CVE Modified by kernel.org
6/17/2026 6:53:23 AM
| Action |
Type |
Old Value |
New Value |
| Added |
Affected |
Record truncated, showing 2048 of 2471 characters.
View Entire Change Record
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["fs/smb/client/cifs_spnego.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"f1d662a7d5e5322e583aad6b3cfec03d8f27b435","lessThan":"7713bd320ed4fc3d08a227cd8e41242219a16981","versionType":"git","status":"affected"},{"version":"f1d662a7d5e5322e583aad6b3cfec03d8f27b435","lessThan":"9544559e59438a4b609b2fdfa0763d8360572824","versionType":"git","status":"affected"},{"version":"f1d662a7d5e5322e583aad6b3cfec03d8f27b435","lessThan":"cf20038657d6d4974349556a34e08fe0490bebbc","versionType":"git","status":"affected"},{"version":"f1d662a7d5e5322e583aad6b3cfec03d8f27b435","lessThan":"2035acfb17221729b1b8ac335e941868a04ca079","versionType":"git","status":"affected"},{"version":"f1d662a7d5e5322e583aad6b3cfec03d8f27b435","lessThan":"a3bbda6502a9398b816fa2e71c9a3f955f58013d","versionType":"git","status":"affected"},{"version":"f1d662a7d5e5322e583aad6b3cfec03d8f27b435","lessThan":"91f89c1d83e80417629791fcef6af8140d7d01c8","versionType":"git","status":"affected"},{"version":"f1d662a7d5e5322e583aad6b3cfec03d8f27b435","lessThan":"0aece6685fc80a8de492688ca2315fb86ec379c7","versionType":"git","status":"affected"},{"version":"f1d662a7d5e5322e583aad6b3cfec03d8f27b435","lessThan":"3da1fdf4efbc490041eb4f836bf596201203f8f2","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["fs/smb/client/cifs_spnego.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.24","status":"affected"},{"version":"0","lessThan":"2.6.24","versionType":"semver","status":"unaffected"},{"version":"5.10.258","lessThanOrEqual":"5.10.*","versionType":"semver","status":"unaffected"},{"version":"5.15.209","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"6.1.175","lessThanOrEqual":"6.1.*","versionType":"semver","status":"unaffected"},{"version":"6.6.142","lessThanOrEqual":"6.6.*","versio
|
Initial Analysis by NIST
6/09/2026 4:47:29 PM
| Action |
Type |
Old Value |
New Value |
| Added |
CWE |
NVD-CWE-noinfo
|
| Added |
CPE Configuration |
OR
*cpe:2.3:o:linux:linux_kernel:2.6.24:rc3:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:2.6.24:rc5:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:2.6.24:rc4:*:*:*:*:*:*
*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:2.6.24:-:*:*:*:*:*:*
*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:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.175
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.209
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.92
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.34
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.24.1 up to (excluding) 5.10.258
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.11
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.142
|
| Added |
Reference Type |
CISA-ADP: https://github.com/manizada/CIFSwitch Types: Third Party Advisory
|
| Added |
Reference Type |
CVE: http://www.openwall.com/lists/oss-security/2026/06/01/6 Types: Mailing List, Third Party Advisory
|
| Added |
Reference Type |
kernel.org: https://git.kernel.org/stable/c/0aece6685fc80a8de492688ca2315fb86ec379c7 Types: Patch
|
| Added |
Reference Type |
kernel.org: https://git.kernel.org/stable/c/2035acfb17221729b1b8ac335e941868a04ca079 Types: Patch
|
| Added |
Reference Type |
kernel.org: https://git.kernel.org/stable/c/3da1fdf4efbc490041eb4f836bf596201203f8f2 Types: Patch
|
| Added |
Reference Type |
kernel.org: https://git.kernel.org/stable/c/7713bd320ed4fc3d08a227cd8e41242219a16981 Types: Patch
|
| Added |
Reference Type |
kernel.org: https://git.kernel.org/stable/c/91f89c1d83e80417629791fcef6af8140d7d01c8 Types: Patch
|
| Added |
Reference Type |
kernel.org: https://git.kernel.org/stable/c/9544559e59438a4b609b2fdfa0763d8360572824 Types: Patch
|
| Added |
Reference Type |
kernel.org: https://git.kernel.org/stable/c/a3bbda6502a9398b816fa2e71c9a3f955f58013d Types: Patch
|
| Added |
Reference Type |
kernel.org: https://git.kernel.org/stable/c/cf20038657d6d4974349556a34e08fe0490bebbc Types: Patch
|
CVE Modified by kernel.org
6/05/2026 3:16:30 AM
| Action |
Type |
Old Value |
New Value |
| Added |
CVSS V3.1 |
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
|
CVE Modified by CVE
6/01/2026 5:16:46 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
http://www.openwall.com/lists/oss-security/2026/06/01/6
|
CVE Modified by CISA-ADP
6/01/2026 3:16:53 PM
| Action |
Type |
Old Value |
New Value |
| Added |
CVSS V3.1 |
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
|
| Added |
CWE |
CWE-20
|
| Added |
Reference |
https://github.com/manizada/CIFSwitch
|
New CVE Received from kernel.org
6/01/2026 1:17:34 PM
| Action |
Type |
Old Value |
New Value |
| 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.
|
| Added |
Reference |
https://git.kernel.org/stable/c/0aece6685fc80a8de492688ca2315fb86ec379c7
|
| Added |
Reference |
https://git.kernel.org/stable/c/2035acfb17221729b1b8ac335e941868a04ca079
|
| Added |
Reference |
https://git.kernel.org/stable/c/3da1fdf4efbc490041eb4f836bf596201203f8f2
|
| Added |
Reference |
https://git.kernel.org/stable/c/7713bd320ed4fc3d08a227cd8e41242219a16981
|
| Added |
Reference |
https://git.kernel.org/stable/c/91f89c1d83e80417629791fcef6af8140d7d01c8
|
| Added |
Reference |
https://git.kernel.org/stable/c/9544559e59438a4b609b2fdfa0763d8360572824
|
| Added |
Reference |
https://git.kernel.org/stable/c/a3bbda6502a9398b816fa2e71c9a3f955f58013d
|
| Added |
Reference |
https://git.kernel.org/stable/c/cf20038657d6d4974349556a34e08fe0490bebbc
|
Quick Info
CVE Dictionary Entry: CVE-2026-46243 NVD
Published Date: 06/01/2026 NVD
Last Modified: 06/30/2026
Source: kernel.org
|
