Advisories ยป MGASA-2023-0149

Updated kernel-linus packages fix security vulnerability

Publication date: 17 Apr 2023
Type: security
Affected Mageia releases : 8
CVE: CVE-2023-1076 , CVE-2023-1077 , CVE-2023-1079 , CVE-2023-1118 , CVE-2023-1611 , CVE-2023-1670 , CVE-2023-1829 , CVE-2023-1855 , CVE-2023-1989 , CVE-2023-1990 , CVE-2022-4269 , CVE-2022-4379 , CVE-2023-25012 , CVE-2023-28466 , CVE-2023-30456 , CVE-2023-30772


This kernel-linus update is based on upstream 5.15.106 and fixes atleast the
following security issues:

A flaw was found in the Linux Kernel. The tun/tap sockets have their socket
UID hardcoded to 0 due to a type confusion in their initialization function.
While it will be often correct, as tuntap devices require CAP_NET_ADMIN,
it may not always be the case, e.g., a non-root user only having that
capability. This would make tun/tap sockets being incorrectly treated in
filtering/routing decisions, possibly bypassing network filters

In the Linux kernel, pick_next_rt_entity() may return a type confused entry,
not detected by the BUG_ON condition, as the confused entry will not be
NULL, but list_head.The buggy error condition would lead to a type confused
entry with the list head,which would then be used as a type confused
sched_rt_entity,causing memory corruption (CVE-2023-1077).

A flaw was found in the Linux kernel. A use-after-free may be triggered in
asus_kbd_backlight_set when plugging/disconnecting in a malicious USB device,
which advertises itself as an Asus device. Similarly to the previous known
CVE-2023-25012, but in asus devices, the work_struct may be scheduled by the
LED controller while the device is disconnecting, triggering a use-after-free
on the struct asus_kbd_leds *led structure. A malicious USB device may
exploit the issue to cause memory corruption with controlled data

A flaw use after free in the Linux kernel integrated infrared receiver/
transceiver driver was found in the way user detaching rc device. A local
user could use this flaw to crash the system or potentially escalate their
privileges on the system (CVE-2023-1118).

A use-after-free flaw was found in btrfs_search_slot in fs/btrfs/ctree.c
in btrfs in the Linux Kernel.This flaw allows an attacker to crash the
system and possibly cause a kernel information leak (CVE-2023-1611).

A flaw use after free in the Linux kernel Xircom 16-bit PCMCIA (PC-card)
Ethernet driver was found.A local user could use this flaw to crash the
system or potentially escalate their privileges on the system

A use-after-free vulnerability in the Linux Kernel traffic control index
filter (tcindex) can be exploited to achieve local privilege escalation.
The tcindex_delete function which does not properly deactivate filters in
case of a perfect hashes while deleting the underlying structure which can
later lead to double freeing the structure. A local attacker user can use
this vulnerability to elevate its privileges to root (CVE-2023-1829).

A use-after-free flaw was found in xgene_hwmon_remove in drivers/hwmon/
xgene-hwmon.c in the Hardware Monitoring Linux Kernel Driver (xgene-hwmon).
This flaw could allow a local attacker to crash the system due to a race
problem. This vulnerability could even lead to a kernel information leak
problem (CVE-2023-1855).

A use-after-free flaw was found in btsdio_remove in drivers\bluetooth\
btsdio.c in the Linux Kernel. In this flaw, a call to btsdio_remove with
an unfinished job, may cause a race problem leading to a UAF on hdev
devices (CVE-2023-1989).

A use-after-free flaw was found in ndlc_remove in drivers/nfc/st-nci/ndlc.c
in the Linux Kernel. This flaw could allow an attacker to crash the system
due to a race problem (CVE-2023-1990).

A flaw was found in the Linux kernel Traffic Control (TC) subsystem. Using
a specific networking configuration (redirecting egress packets to ingress
using TC action "mirred") a local unprivileged user could trigger a CPU
soft lockup (ABBA deadlock) when the transport protocol in use (TCP or
SCTP) does a retransmission, resulting in a denial of service condition

A use-after-free vulnerability was found in __nfs42_ssc_open() in
fs/nfs/nfs4file.c in the Linux kernel. This flaw allows an attacker to
conduct a remote denial of service (CVE-2022-4379).

The Linux kernel through 6.1.9 has a Use-After-Free in bigben_remove in
drivers/hid/hid-bigbenff.c via a crafted USB device because the LED
controllers remain registered for too long (CVE-2023-25012).

do_tls_getsockopt in net/tls/tls_main.c in the Linux kernel through 6.2.6
lacks a lock_sock call, leading to a race condition (with a resultant
use-after-free or NULL pointer dereference) (CVE-2023-28466).

An issue was discovered in arch/x86/kvm/vmx/nested.c in the Linux kernel
before 6.2.8. nVMX on x86_64 lacks consistency checks for CR0 and CR4

The Linux kernel before 6.2.9 has a race condition and resultant
use-after-free in drivers/power/supply/da9150-charger.c if a physically
proximate attacker unplugs a device (CVE-2023-30772).

For other upstream fixes in this update, see the referenced changelogs.