In the Linux kernel, the following vulnerability has been resolved: Buffer overflow in drivers/xen/sys-hypervisor.c The build id returned by HYPERVISOR_xen_version(XENVER_build_id) is neither NUL terminated nor a string. The first causes a buffer overflow as sprintf in buildid_show will read and copy till it finds a NUL. 00000000 f4 91 51 f4 dd 38 9e 9d 65 47 52 eb 10 71 db 50 |..Q..8..eGR..q.P| 00000010 b9 a8 01 42 6f 2e 32 |...Bo.2| 00000017 So use a memcpy instead of sprintf to have the correct value: 00000000 f4 91 51 f4 dd 00 9e 9d 65 47 52 eb 10 71 db 50 |..Q.....eGR..q.P| 00000010 b9 a8 01 42 |...B| 00000014 (the above have a hack to embed a zero inside and check it's returned correctly). This is XSA-485 / CVE-2026-31786

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.

ELSA-2026-23258: kernel security update (IMPORTANT)

Уязвимость функции cifs_get_spnego_key() инструмента cifs.upcall пакета cifs-utils ядра операционных систем Linux, позволяющая нарушителю повысить свои привилегии до уровня root и выполнить произвольный код

Security update for the Linux Kernel

Critical: kernel security update

ELSA-2026-25121: kernel security update (CRITICAL)

Уязвимость kernel-lt

Уязвимость kernel-lt

Security update for the Linux Kernel

Security update for the Linux Kernel (Live Patch 83 for SUSE Linux Enterprise 12 SP5)

Security update for the Linux Kernel

Important: kernel security update

ELSA-2026-26427: kernel security update (IMPORTANT)

Security update for the Linux Kernel (Live Patch 78 for SUSE Linux Enterprise 12 SP5)

Security update for the Linux Kernel (Live Patch 74 for SUSE Linux Enterprise 12 SP5)

Security update for the Linux Kernel (Live Patch 82 for SUSE Linux Enterprise 12 SP5)

Security update for the Linux Kernel (Live Patch 69 for SUSE Linux Enterprise 12 SP5)

Security update for the Linux Kernel (Live Patch 80 for SUSE Linux Enterprise 12 SP5)

Security update for the Linux Kernel (Live Patch 70 for SUSE Linux Enterprise 12 SP5)