⬇ Download holy card: ·
Saint CIFSwitch
Hagiography in preparation at the scriptorium.
Feast day May 27
Technical record
- Disclosed on
- May 27 2026
- CVE
- CVE-2026-46243
- CVSS
- 7.8
- Product
- Linux · Linux
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.
Sources: heyitsas.im
Canonized during the vacant see