A linux-5.10 security update has been released for Debian GNU/Linux 9 Extended LTS.

ELA-661-1 linux-5.10 security update

Package linux-5.10
Version 5.10.127-2~deb9u1 (stretch)
Related CVEs CVE-2021-33655 CVE-2022-2318 CVE-2022-26365 CVE-2022-33740 CVE-2022-33741 CVE-2022-33742 CVE-2022-33743 CVE-2022-33744 CVE-2022-34918

Several vulnerabilities have been discovered in the Linux kernel that may lead to privilege escalation, denial of service or information leaks:

CVE-2021-33655

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

CVE-2022-2318

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.

CVE-2022-33743

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

CVE-2022-33744

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

CVE-2022-34918

Arthur Mongodin discovered a heap buffer overflow in the Netfilter
subsystem which may result in local privilege escalation.
For Debian 9 stretch, these problems have been fixed in version 5.10.127-2~deb9u1.

We recommend that you upgrade your linux-5.10 packages.

Further information about Extended LTS security advisories can be found at: https://deb.freexian.com/extended-lts/

  ELA-661-1 linux-5.10 security update