CVE-2026-46243
In the Linux kernel, the following vulnerability has been resolved: smb: client: reject userspace cifs.spnego descriptions cifs.spnego key
CVSS
7.1
Alto
EPSS
0.4%
p32
KEV
—
Exploit Today
9
0-100
Publicado: 1 jun 2026 · Última mod.: 7 ago 2026 · CWE-20 · CWE-825
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.
- git.kernel.orghttps://git.kernel.org/stable/c/0aece6685fc80a8de492688ca2315fb86ec379c7
- git.kernel.orghttps://git.kernel.org/stable/c/2035acfb17221729b1b8ac335e941868a04ca079
- git.kernel.orghttps://git.kernel.org/stable/c/3da1fdf4efbc490041eb4f836bf596201203f8f2
- git.kernel.orghttps://git.kernel.org/stable/c/7713bd320ed4fc3d08a227cd8e41242219a16981
- git.kernel.orghttps://git.kernel.org/stable/c/91f89c1d83e80417629791fcef6af8140d7d01c8
- git.kernel.orghttps://git.kernel.org/stable/c/9544559e59438a4b609b2fdfa0763d8360572824
- git.kernel.orghttps://git.kernel.org/stable/c/a3bbda6502a9398b816fa2e71c9a3f955f58013d
- git.kernel.orghttps://git.kernel.org/stable/c/cf20038657d6d4974349556a34e08fe0490bebbc
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/06/01/6
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:23258
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:23259
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:23329
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:23395
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:24381
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:25908
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:26462
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:26515
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:26535
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:26563
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:26570