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Linux Security Update Linux Security Kernel Update DSA-5191-1

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Im Linux Kernel wurde 9 Sicherheitslücken gefunden. Diese wurden in dem Debian 11 Bullseye Kernel in Version 5.10.127-2 geschlossen.


A user with access to a framebuffer console driver could cause a memory out-of-bounds write via the FBIOPUT_VSCREENINFO ioctl.


A use-after-free in the Amateur Radio X.25 PLP (Rose) support may result in denial of service.

CVE-2022-26365 / CVE-2022-33740 / CVE-2022-33741 / CVE-2022-33742

Roger Pau Monne discovered that Xen block and network PV device frontends don’t zero out memory regions before sharing them with the backend, which may result in information disclosure. Additionally it
was discovered that the granularity of the grant table doesn’t permit sharing less than a 4k page, which may also result in information disclosure.


Jan Beulich discovered that incorrect memory handling in the Xen network backend may lead to denial of service.


Oleksandr Tyshchenko discovered that ARM Xen guests can cause a denial of service to the Dom0 via paravirtual devices.


Arthur Mongodin discovered a heap buffer overflow in the Netfilter subsystem which may result in local privilege escalation.

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