A linux-5.10 security update has been released for Debian GNU/Linux 10 to address several vulnerabilities that may lead to privilege escalation, denial of service, or information leaks.

DLA 3244-1: linux-5.10 security update

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Debian LTS Advisory DLA-3244-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Ben Hutchings
December 20, 2022   https://wiki.debian.org/LTS
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Package : linux-5.10
Version : 5.10.158-2~deb10u1
CVE ID : CVE-2021-3759 CVE-2022-3169 CVE-2022-3435 CVE-2022-3521
CVE-2022-3524 CVE-2022-3564 CVE-2022-3565 CVE-2022-3594
CVE-2022-3628 CVE-2022-3640 CVE-2022-3643 CVE-2022-4139
CVE-2022-4378 CVE-2022-41849 CVE-2022-41850 CVE-2022-42328
CVE-2022-42329 CVE-2022-42895 CVE-2022-42896 CVE-2022-47518
CVE-2022-47519 CVE-2022-47520 CVE-2022-47521
Debian Bug : 1022806 1024697

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

CVE-2021-3759

It was discovered that the memory cgroup controller did not
account for kernel memory allocated for IPC objects. A local user
could use this for denial of service (memory exhaustion).

CVE-2022-3169

It was discovered that the NVMe host driver did not prevent a
concurrent reset and subsystem reset. A local user with access to
an NVMe device could use this to cause a denial of service (device
disconnect or crash).

CVE-2022-3435

Gwangun Jung reported a flaw in the IPv4 forwarding subsystem
which would lead to an out-of-bounds read. A local user with
CAP_NET_ADMIN capability in any user namespace could possibly
exploit this to cause a denial of service (crash).

CVE-2022-3521

The syzbot tool found a race condition in the KCM subsystem
which could lead to a crash.

This subsystem is not enabled in Debian's official kernel
configurations.

CVE-2022-3524

The syzbot tool found a race condition in the IPv6 stack which
could lead to a memory leak. A local user could exploit this to
cause a denial of service (memory exhaustion).

CVE-2022-3564

A flaw was discovered in the Bluetooh L2CAP subsystem which
would lead to a use-after-free. This might be exploitable
to cause a denial of service (crash or memory corruption) or
possibly for privilege escalation.

CVE-2022-3565

A flaw was discovered in the mISDN driver which would lead to a
use-after-free. This might be exploitable to cause a denial of
service (crash or memory corruption) or possibly for privilege
escalation.

CVE-2022-3594

Andrew Gaul reported that the r8152 Ethernet driver would log
excessive numbers of messages in response to network errors. A
remote attacker could possibly exploit this to cause a denial of
service (resource exhaustion).

CVE-2022-3628

Dokyung Song, Jisoo Jang, and Minsuk Kang reported a potential
heap-based buffer overflow in the brcmfmac Wi-Fi driver. A user
able to connect a malicious USB device could exploit this to cause
a denial of service (crash or memory corruption) or possibly for
privilege escalation.

CVE-2022-3640

A flaw was discovered in the Bluetooh L2CAP subsystem which
would lead to a use-after-free. This might be exploitable
to cause a denial of service (crash or memory corruption) or
possibly for privilege escalation.

CVE-2022-3643 (XSA-423)

A flaw was discovered in the Xen network backend driver that would
result in it generating malformed packet buffers. If these
packets were forwarded to certain other network devices, a Xen
guest could exploit this to cause a denial of service (crash or
device reset).

CVE-2022-4139

A flaw was discovered in the i915 graphics driver. On gen12 "Xe"
GPUs it failed to flush TLBs when necessary, resulting in GPU
programs retaining access to freed memory. A local user with
access to the GPU could exploit this to leak sensitive
information, cause a denial of service (crash or memory
corruption) or likely for privilege escalation.

CVE-2022-4378

Kyle Zeng found a flaw in procfs that would cause a stack-based
buffer overflow. A local user permitted to write to a sysctl
could use this to cause a denial of service (crash or memory
corruption) or possibly for privilege escalation.

CVE-2022-41849

A race condition was discovered in the smscufx graphics driver,
which could lead to a use-after-free. A user able to remove the
physical device while also accessing its device node could exploit
this to cause a denial of service (crash or memory corruption) or
possibly for privilege escalation.

CVE-2022-41850

A race condition was discovered in the hid-roccat input driver,
which could lead to a use-after-free. A local user able to access
such a device could exploit this to cause a denial of service
(crash or memory corruption) or possibly for privilege escalation.

CVE-2022-42328, CVE-2022-42329 (XSA-424)

Yang Yingliang reported that the Xen network backend driver did
not use the proper function to free packet buffers in one case,
which could lead to a deadlock. A Xen guest could exploit this to
cause a denial of service (hang).

CVE-2022-42895

Tamás Koczka reported a flaw in the Bluetooh L2CAP subsystem
that would result in reading uninitialised memory. A nearby
attacker able to make a Bluetooth connection could exploit
this to leak sensitive information.

CVE-2022-42896

Tamás Koczka reported flaws in the Bluetooh L2CAP subsystem that
can lead to a use-after-free. A nearby attacker able to make a
Bluetooth SMP connection could exploit this to cause a denial of
service (crash or memory corruption) or possibly for remote code
execution.

CVE-2022-47518, CVE-2022-47519, CVE-2022-47521

Several flaws were discovered in the wilc1000 Wi-Fi driver which
could lead to a heap-based buffer overflow. A nearby attacker
could exploit these for denial of service (crash or memory
corruption) or possibly for remote code execution.

CVE-2022-47520

A flaw was discovered in the wilc1000 Wi-Fi driver which could
lead to a heap-based buffer overflow. A local user with
CAP_NET_ADMIN capability over such a Wi-Fi device could exploit
this for denial of service (crash or memory corruption) or
possibly for privilege escalation.

For Debian 10 buster, these problems have been fixed in version
5.10.158-2~deb10u1.

We recommend that you upgrade your linux-5.10 packages.

For the detailed security status of linux-5.10 please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/linux-5.10

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://wiki.debian.org/LTS

Ben Hutchings - Debian developer, member of kernel, installer and LTS
teams