Amazon Linux 2 : kernel (ALASKERNEL-5.4-2023-041)

high Nessus Plugin ID 170471

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of kernel installed on the remote host is prior to 5.4.228-131.415. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.4-2023-041 advisory.

A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this vulnerability is the function follow_page_pte of the file mm/gup.c of the component BPF. The manipulation leads to race condition. The attack can be launched remotely. It is recommended to apply a patch to fix this issue. The identifier VDB-211921 was assigned to this vulnerability. (CVE-2022-3623)

Guests can trigger NIC interface reset/abort/crash via netback It is possible for a guest to trigger a NIC interface reset/abort/crash in a Linux based network backend by sending certain kinds of packets. It appears to be an (unwritten?) assumption in the rest of the Linux network stack that packet protocol headers are all contained within the linear section of the SKB and some NICs behave badly if this is not the case. This has been reported to occur with Cisco (enic) and Broadcom NetXtrem II BCM5780 (bnx2x) though it may be an issue with other NICs/drivers as well. In case the frontend is sending requests with split headers, netback will forward those violating above mentioned assumption to the networking core, resulting in said misbehavior. (CVE-2022-3643)

Guests can trigger deadlock in Linux netback driver T[his CNA information record relates to multiple CVEs;
the text explains which aspects/vulnerabilities correspond to which CVE.] The patch for XSA-392 introduced another issue which might result in a deadlock when trying to free the SKB of a packet dropped due to the XSA-392 handling (CVE-2022-42328). Additionally when dropping packages for other reasons the same deadlock could occur in case of netpoll being active for the interface the xen-netback driver is connected to (CVE-2022-42329). (CVE-2022-42328)

Guests can trigger deadlock in Linux netback driver T[his CNA information record relates to multiple CVEs;
the text explains which aspects/vulnerabilities correspond to which CVE.] The patch for XSA-392 introduced another issue which might result in a deadlock when trying to free the SKB of a packet dropped due to the XSA-392 handling (CVE-2022-42328). Additionally when dropping packages for other reasons the same deadlock could occur in case of netpoll being active for the interface the xen-netback driver is connected to (CVE-2022-42329). (CVE-2022-42329)

In the Linux kernel, the following vulnerability has been resolved:

ipv6: avoid use-after-free in ip6_fragment() (CVE-2022-48956)

In the Linux kernel, the following vulnerability has been resolved:

xen-netfront: Fix NULL sring after live migration (CVE-2022-48969)

In the Linux kernel, the following vulnerability has been resolved:

af_unix: Get user_ns from in_skb in unix_diag_get_exact(). (CVE-2022-48970)

In the Linux kernel, the following vulnerability has been resolved:

mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add() (CVE-2022-48972)

In the Linux kernel, the following vulnerability has been resolved:

can: af_can: fix NULL pointer dereference in can_rcv_filter (CVE-2022-48977)

In the Linux kernel, the following vulnerability has been resolved:

HID: core: fix shift-out-of-bounds in hid_report_raw_event (CVE-2022-48978)

In the Linux kernel, the following vulnerability has been resolved:

drm/shmem-helper: Remove errant put in error path (CVE-2022-48981)

In the Linux kernel, the following vulnerability has been resolved:

mm/gup: fix gup_pud_range() for dax (CVE-2022-48986)

In the Linux kernel, the following vulnerability has been resolved:

media: v4l2-dv-timings.c: fix too strict blanking sanity checks (CVE-2022-48987)

In the Linux kernel, the following vulnerability has been resolved:

memcg: fix possible use-after-free in memcg_write_event_control() (CVE-2022-48988)

In the Linux kernel, the following vulnerability has been resolved:

mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths (CVE-2022-48991)

A null pointer dereference issue was found in the can protocol in net/can/af_can.c in the Linux Kernel.
ml_priv may not be initialized in the receive path of CAN frames. This issue could allow a local user to crash the system or cause a denial of service. (CVE-2023-2166)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Run 'yum update kernel' to update your system.

Plugin Details

Severity: High

ID: 170471

File Name: al2_ALASKERNEL-5_4-2023-041.nasl

Version: 1.10

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 1/24/2023

Updated: 3/17/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.6

Vector: CVSS2#AV:N/AC:H/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2022-3623

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2022-48991

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:perf, p-cpe:/a:amazon:linux:bpftool, p-cpe:/a:amazon:linux:perf-debuginfo, p-cpe:/a:amazon:linux:kernel-tools-debuginfo, p-cpe:/a:amazon:linux:kernel-debuginfo-common-aarch64, p-cpe:/a:amazon:linux:kernel-tools, p-cpe:/a:amazon:linux:kernel-devel, p-cpe:/a:amazon:linux:python-perf-debuginfo, p-cpe:/a:amazon:linux:kernel, p-cpe:/a:amazon:linux:kernel-debuginfo, p-cpe:/a:amazon:linux:kernel-headers, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:bpftool-debuginfo, p-cpe:/a:amazon:linux:kernel-tools-devel, p-cpe:/a:amazon:linux:kernel-debuginfo-common-x86_64, p-cpe:/a:amazon:linux:python-perf

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/18/2023

Vulnerability Publication Date: 10/20/2022

Reference Information

CVE: CVE-2022-3623, CVE-2022-3643, CVE-2022-42328, CVE-2022-42329, CVE-2022-48956, CVE-2022-48969, CVE-2022-48970, CVE-2022-48972, CVE-2022-48977, CVE-2022-48978, CVE-2022-48981, CVE-2022-48986, CVE-2022-48987, CVE-2022-48988, CVE-2022-48991, CVE-2023-2166

Detections

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