CVE detail
CVE-2026-46243
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.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 30.0 · diversity 20.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
47 source links · newest first
Information published.
vendormsrc.microsoft.comJun 28, 2026, 8:53 AM- https://access.redhat.com/errata/RHSA-2026:40021access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:41236access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:36620access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46243.jsonsecurity.access.redhat.com
No excerpt available.
Vendor Advisorysecurity.access.redhat.comJun 1, 2026, 5:17 PM - https://github.com/manizada/CIFSwitchgithub.com
No excerpt available.
Exploitgithub.comJun 1, 2026, 5:17 PM - https://bugzilla.redhat.com/show_bug.cgi?id=2481486bugzilla.redhat.com
No excerpt available.
Exploitbugzilla.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/security/cve/CVE-2026-46243access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:34815access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:34788access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:34764access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:34757access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:34048access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:33486access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:33225access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:33224access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:33223access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:33222access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:33221access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:33220access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:33219access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:28962access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:28887access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:27735access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:27729access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:27719access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:27708access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:26570access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:26563access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:26535access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:26515access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:26462access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:25908access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:24381access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:23395access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:23329access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:23259access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - https://access.redhat.com/errata/RHSA-2026:23258access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJun 1, 2026, 5:17 PM - http://www.openwall.com/lists/oss-security/2026/06/01/6www.openwall.com
No excerpt available.
Exploitwww.openwall.comJun 1, 2026, 5:17 PM No excerpt available.
Vendor Advisorygit.kernel.orgJun 1, 2026, 5:17 PMNo excerpt available.
Vendor Advisorygit.kernel.orgJun 1, 2026, 5:17 PMNo excerpt available.
Vendor Advisorygit.kernel.orgJun 1, 2026, 5:17 PMNo excerpt available.
Vendor Advisorygit.kernel.orgJun 1, 2026, 5:17 PMNo excerpt available.
Vendor Advisorygit.kernel.orgJun 1, 2026, 5:17 PMNo excerpt available.
Vendor Advisorygit.kernel.orgJun 1, 2026, 5:17 PMNo excerpt available.
Vendor Advisorygit.kernel.orgJun 1, 2026, 5:17 PMNo excerpt available.
Vendor Advisorygit.kernel.orgJun 1, 2026, 5:17 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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