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Debian LTS Advisory DLA-3710-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Ben Hutchings
January 10, 2024 https://wiki.debian.org/LTS
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Package : linux
Version : 4.19.304-1
CVE ID : CVE-2021-44879 CVE-2023-0590 CVE-2023-1077 CVE-2023-1206
CVE-2023-1989 CVE-2023-3212 CVE-2023-3390 CVE-2023-3609
CVE-2023-3611 CVE-2023-3772 CVE-2023-3776 CVE-2023-4206
CVE-2023-4207 CVE-2023-4208 CVE-2023-4244 CVE-2023-4622
CVE-2023-4623 CVE-2023-4921 CVE-2023-5717 CVE-2023-6606
CVE-2023-6931 CVE-2023-6932 CVE-2023-25775 CVE-2023-34319
CVE-2023-34324 CVE-2023-35001 CVE-2023-39189 CVE-2023-39192
CVE-2023-39193 CVE-2023-39194 CVE-2023-40283 CVE-2023-42753
CVE-2023-42754 CVE-2023-42755 CVE-2023-45863 CVE-2023-45871
CVE-2023-51780 CVE-2023-51781 CVE-2023-51782
Several vulnerabilities have been discovered in the Linux kernel that
may lead to a privilege escalation, denial of service or information
leaks.
CVE-2021-44879
Wenqing Liu reported a NULL pointer dereference in the f2fs
implementation. An attacker able to mount a specially crafted image
can take advantage of this flaw for denial of service.
CVE-2023-0590
Dmitry Vyukov discovered a race condition in the network scheduler
core that that can lead to a use-after-free. A local user with
the CAP_NET_ADMIN capability in any user or network namespace
could exploit this to cause a denial of service (crash or memory
corruption) or possibly for privilege escalation.
CVE-2023-1077
Pietro Borrello reported a type confusion flaw in the task
scheduler. A local user might be able to exploit this to cause a
denial of service (crash or memory corruption) or possibly for
privilege escalation.
CVE-2023-1206
It was discovered that the networking stack permits attackers to
force hash collisions in the IPv6 connection lookup table, which
may result in denial of service (significant increase in the cost
of lookups, increased CPU utilization).
CVE-2023-1989
Zheng Wang reported a race condition in the btsdio Bluetooth
adapter driver that can lead to a use-after-free. An attacker
able to insert and remove SDIO devices can use this to cause a
denial of service (crash or memory corruption) or possibly to run
arbitrary code in the kernel.
CVE-2023-3212
Yang Lan discovered that missing validation in the GFS2 filesystem
could result in denial of service via a NULL pointer dereference
when mounting a malformed GFS2 filesystem.
CVE-2023-3390
A use-after-free flaw in the netfilter subsystem caused by
incorrect error path handling may result in denial of service or
privilege escalation.
CVE-2023-3609, CVE-2023-3776, CVE-2023-4206, CVE-2023-4207, CVE-2023-4208
It was discovered that a use-after-free in the cls_fw, cls_u32,
cls_route and network classifiers may result in denial of service
or potential local privilege escalation.
CVE-2023-3611
It was discovered that an out-of-bounds write in the traffic
control subsystem for the Quick Fair Queueing scheduler (QFQ) may
result in denial of service or privilege escalation.
CVE-2023-3772
Lin Ma discovered a NULL pointer dereference flaw in the XFRM
subsystem which may result in denial of service.
CVE-2023-4244
A race condition was found in the nftables subsystem that could
lead to a use-after-free. A local user could exploit this to
cause a denial of service (crash), information leak, or possibly
for privilege escalation.
CVE-2023-4622
Bing-Jhong Billy Jheng discovered a use-after-free within the Unix
domain sockets component, which may result in local privilege
escalation.
CVE-2023-4623
Budimir Markovic reported a missing configuration check in the
sch_hfsc network scheduler that could lead to a use-after-free or
other problems. A local user with the CAP_NET_ADMIN capability in
any user or network namespace could exploit this to cause a denial
of service (crash or memory corruption) or possibly for privilege
escalation.
CVE-2023-4921
"valis" reported flaws in the sch_qfq network scheduler that could
lead to a use-after-free. A local user with the CAP_NET_ADMIN
capability in any user or network namespace could exploit this to
cause a denial of service (crash or memory corruption) or possibly
for privilege escalation.
CVE-2023-5717
Budimir Markovic reported a heap out-of-bounds write vulnerability
in the Linux kernel's Performance Events system caused by improper
handling of event groups, which may result in denial of service or
privilege escalation. The default settings in Debian prevent
exploitation unless more permissive settings have been applied in
the kernel.perf_event_paranoid sysctl.
CVE-2023-6606
"j51569436" reported a potential out-of-bounds read in the CIFS
filesystem implementation. If a CIFS filesystem is mounted from a
malicious server, the server could possibly exploit this to cause
a denial of service (crash).
CVE-2023-6931
Budimir Markovic reported a heap out-of-bounds write vulnerability
in the Linux kernel's Performance Events system which may result in
denial of service or privilege escalation. The default settings in
Debian prevent exploitation unless more permissive settings have
been applied in the kernel.perf_event_paranoid sysctl.
CVE-2023-6932
A use-after-free vulnerability in the IPv4 IGMP implementation may
result in denial of service or privilege escalation.
CVE-2023-25775
Ivan D Barrera, Christopher Bednarz, Mustafa Ismail and Shiraz
Saleem discovered that improper access control in the Intel Ethernet
Controller RDMA driver may result in privilege escalation.
CVE-2023-34319
Ross Lagerwall discovered a buffer overrun in Xen's netback driver
which may allow a Xen guest to cause denial of service to the
virtualisation host by sending malformed packets.
CVE-2023-34324
Marek Marczykowski-Gorecki reported a possible deadlock in the Xen
guests event channel code which may allow a malicious guest
administrator to cause a denial of service.
CVE-2023-35001
Tanguy DUBROCA discovered an out-of-bounds reads and write flaw in
the Netfilter nf_tables implementation when processing an
nft_byteorder expression, which may result in local privilege
escalation for a user with the CAP_NET_ADMIN capability in any
user or network namespace.
CVE-2023-39189, CVE-2023-39192, CVE-2023-39193
Lucas Leong of Trend Micro Zero Day Initiative reported missing
bounds checks in the nfnetlink_osf, xt_u32, and xt_sctp netfilter
modules. A local user with the CAP_NET_ADMIN capability in any
user or network namespace could exploit these to leak sensitive
information from the kernel or for denial of service (crash).
CVE-2023-39194
Lucas Leong of Trend Micro Zero Day Initiative reported a missing
bounds check in the xfrm (IPsec) subsystem. A local user with the
CAP_NET_ADMIN capability in any user or network namespace could
exploit this to leak sensitive information from the kernel or for
denial of service (crash).
CVE-2023-40283
A use-after-free was discovered in Bluetooth L2CAP socket
handling.
CVE-2023-42753
Kyle Zeng discovered an off-by-one error in the netfilter ipset
subsystem which could lead to out-of-bounds memory access. A
local user with the CAP_NET_ADMIN capability in any user or
network namespace could exploit this to cause a denial of service
(memory corruption or crash) and possibly for privilege
escalation.
CVE-2023-42754
Kyle Zeng discovered a flaw in the IPv4 implementation which could
lead to a null pointer deference. A local user could exploit this
for denial of service (crash).
CVE-2023-42755
Kyle Zeng discovered missing configuration validation in the
cls_rsvp network classifier which could lead to out-of-bounds
reads. A local user with the CAP_NET_ADMIN capability in any user
or network namespace could exploit this to cause a denial of
service (crash) or to leak sensitive information.
This flaw has been mitigated by removing the cls_rsvp classifier.
CVE-2023-45863
A race condition in library routines for handling generic kernel
objects may result in an out-of-bounds write in the
fill_kobj_path() function.
CVE-2023-45871
Manfred Rudigier reported a flaw in the igb network driver for
Intel Gigabit Ethernet interfaces. When the "rx-all" feature was
enabled on such a network interface, an attacker on the same
network segment could send packets that would overflow a receive
buffer, leading to a denial of service (crash or memory
corruption) or possibly remote code execution.
CVE-2023-51780
It was discovered that a race condition in the ATM (Asynchronous
Transfer Mode) subsystem may lead to a use-after-free.
CVE-2023-51781
It was discovered that a race condition in the Appletalk subsystem
may lead to a use-after-free.
CVE-2023-51782
It was discovered that a race condition in the Amateur Radio X.25
PLP (Rose) support may lead to a use-after-free. This module is not
auto-loaded on Debian systems, so this issue only affects systems
where it is explicitly loaded.
For Debian 10 buster, these problems have been fixed in version
4.19.304-1. This update additionally includes many more bug fixes
from stable updates 4.19.290-4.19.304 inclusive.
We recommend that you upgrade your linux packages.
For the detailed security status of linux please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/linux
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
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