| Description: | Summary:
The remote host is missing an update for the 'kernel-linus' package(s) announced via the MGASA-2022-0380 advisory.
Vulnerability Insight:
This kernel-linus update is based on upstream 5.15.74 and fixes at least
the following security issues:
A flaw was found in the Linux kernel. The existing KVM SEV API has a
vulnerability that allows a non-root (host) user-level application to
crash the host kernel by creating a confidential guest VM instance in
AMD CPU that supports Secure Encrypted Virtualization (SEV)
(CVE-2022-0171).
A flaw was found in vDPA with VDUSE backend. There are currently no checks
in VDUSE kernel driver to ensure the size of the device config space is in
line with the features advertised by the VDUSE userspace application. In
case of a mismatch, Virtio drivers config read helpers do not initialize
the memory indirectly passed to vduse_vdpa_get_config() returning
uninitialized memory from the stack. This could cause undefined behavior or
data leaks in Virtio drivers (CVE-2022-2308).
An issue was found in the Linux kernel in nf_conntrack_irc where the
message handling can be confused and incorrectly matches the message.
A firewall may be able to be bypassed when users are using unencrypted
IRC with nf_conntrack_irc configured (CVE-2022-2663).
An out-of-bounds memory read flaw was found in the Linux kernel's BPF
subsystem in how a user calls the bpf_tail_call function with a key
larger than the max_entries of the map. This flaw allows a local user
to gain unauthorized access to data (CVE-2022-2905).
A race condition was found in the Linux kernel's IP framework for
transforming packets (XFRM subsystem) when multiple calls to
xfrm_probe_algs occurred simultaneously. This flaw could allow a local
attacker to potentially trigger an out-of-bounds write or leak kernel
heap memory by performing an out-of-bounds read and copying it into a
socket (CVE-2022-3028).
A flaw in the i740 driver. The Userspace program could pass any values
to the driver through ioctl() interface. The driver doesn't check the
value of 'pixclock', so it may cause a divide by zero error
(CVE-2022-3061).
There exists a use-after-free in io_uring in the Linux kernel.
Signalfd_poll() and binder_poll() use a waitqueue whose lifetime is the
current task. It will send a POLLFREE notification to all waiters before
the queue is freed. Unfortunately, the io_uring poll doesn't handle
POLLFREE. This allows a use-after-free to occur if a signalfd or binder
fd is polled with io_uring poll, and the waitqueue gets freed
(CVE-2022-3176).
A race condition flaw was found in the Linux kernel sound subsystem due
to improper locking. It could lead to a NULL pointer dereference while
handling the SNDCTL_DSP_SYNC ioctl. A privileged local user (root or
member of the audio group) could use this flaw to crash the system,
resulting in a denial of service condition (CVE-2022-3303).
A flaw was found in the Linux kernel networking code. A use-after-free
was found in the way the sch_sfb enqueue function used the socket buffer
(SKB) cb field after the ... [Please see the references for more information on the vulnerabilities]
Affected Software/OS:
'kernel-linus' package(s) on Mageia 8.
Solution:
Please install the updated package(s).
CVSS Score:
8.3
CVSS Vector:
AV:A/AC:L/Au:N/C:C/I:C/A:C
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