Amazon Linux 2 Security Advisory: ALASKERNEL-5.15-2022-002
Advisory Release Date: 2022-06-30 22:29 Pacific
Advisory Updated Date: 2022-09-01 23:15 Pacific
FAQs regarding Amazon Linux ALAS/CVE Severity
A use-after-free flaw was found in fs/ext4/namei.c:dx_insert_block() in the Linux kernel's filesystem sub-component. This flaw allows a local attacker with a user privilege to cause a denial of service. (CVE-2022-1184)
A flaw was found in KVM. With shadow paging enabled if INVPCID is executed with CR0.PG=0, the invlpg callback is not set, and the result is a NULL pointer dereference. This flaw allows a guest user to cause a kernel oops condition on the host, resulting in a denial of service. (CVE-2022-1789)
A NULL pointer dereference flaw was found in the Linux kernel's KVM module, which can lead to a denial of service in the x86_emulate_insn in arch/x86/kvm/emulate.c. This flaw occurs while executing an illegal instruction in guest in the Intel CPU. (CVE-2022-1852)
A use-after-free vulnerability was found in the Linux kernel's Netfilter subsystem in net/netfilter/nf_tables_api.c. This flaw allows a local attacker with user access to cause a privilege escalation issue. (CVE-2022-1966)
No description is available for this CVE. (CVE-2022-1972)
A use-after-free flaw was found in the Linux kernel in log_replay in fs/ntfs3/fslog.c in the NTFS journal. This flaw allows a local attacker to crash the system and leads to a kernel information leak problem. (CVE-2022-1973)
A vulnerability was found in the Linux kernel's nft_set_desc_concat_parse() function .This flaw allows an attacker to trigger a buffer overflow via nft_set_desc_concat_parse() , causing a denial of service and possibly to run code. (CVE-2022-2078)
net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free. (CVE-2022-32250)
An issue was discovered in the Linux kernel through 5.18.3 on powerpc 32-bit platforms. There is a buffer overflow in ptrace PEEKUSER and POKEUSER (aka PEEKUSR and POKEUSR) when accessing floating point registers. (CVE-2022-32981)
rpmsg_virtio_add_ctrl_dev in drivers/rpmsg/virtio_rpmsg_bus.c in the Linux kernel before 5.18.4 has a double free. (CVE-2022-34494)
rpmsg_probe in drivers/rpmsg/virtio_rpmsg_bus.c in the Linux kernel before 5.18.4 has a double free. (CVE-2022-34495)
A flaw was found in hw. Incomplete cleanup of multi-core shared buffers for some Intel(r) Processors may allow an authenticated user to enable information disclosure via local access. (CVE-2022-21123)
A flaw was found in hw. Incomplete cleanup of microarchitectural fill buffers on some Intel(r) Processors may allow an authenticated user to enable information disclosure via local access. (CVE-2022-21125)
A flaw was found in hw. Incomplete cleanup in specific special register write operations for some Intel® Processors may allow an authenticated user to enable information disclosure via local access. (CVE-2022-21166)
References to CVE-2022-21123, CVE-2022-21125, and CVE-2022-21166 have been added after the original release of this advisory, however those vulnerabilities were fixed by the packages referenced by this advisory's initial release on 2022-06-30.
Affected Packages:
kernel
Note:
This advisory is applicable to Amazon Linux 2 - Kernel-5.15 Extra. Visit this page to learn more about Amazon Linux 2 (AL2) Extras and this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update kernel to update your system.
aarch64:
kernel-5.15.50-23.125.amzn2.aarch64
kernel-headers-5.15.50-23.125.amzn2.aarch64
kernel-debuginfo-common-aarch64-5.15.50-23.125.amzn2.aarch64
perf-5.15.50-23.125.amzn2.aarch64
perf-debuginfo-5.15.50-23.125.amzn2.aarch64
python-perf-5.15.50-23.125.amzn2.aarch64
python-perf-debuginfo-5.15.50-23.125.amzn2.aarch64
kernel-tools-5.15.50-23.125.amzn2.aarch64
kernel-tools-devel-5.15.50-23.125.amzn2.aarch64
kernel-tools-debuginfo-5.15.50-23.125.amzn2.aarch64
bpftool-5.15.50-23.125.amzn2.aarch64
bpftool-debuginfo-5.15.50-23.125.amzn2.aarch64
kernel-devel-5.15.50-23.125.amzn2.aarch64
kernel-debuginfo-5.15.50-23.125.amzn2.aarch64
kernel-livepatch-5.15.50-23.125-1.0-0.amzn2.aarch64
i686:
kernel-headers-5.15.50-23.125.amzn2.i686
src:
kernel-5.15.50-23.125.amzn2.src
x86_64:
kernel-5.15.50-23.125.amzn2.x86_64
kernel-headers-5.15.50-23.125.amzn2.x86_64
kernel-debuginfo-common-x86_64-5.15.50-23.125.amzn2.x86_64
perf-5.15.50-23.125.amzn2.x86_64
perf-debuginfo-5.15.50-23.125.amzn2.x86_64
python-perf-5.15.50-23.125.amzn2.x86_64
python-perf-debuginfo-5.15.50-23.125.amzn2.x86_64
kernel-tools-5.15.50-23.125.amzn2.x86_64
kernel-tools-devel-5.15.50-23.125.amzn2.x86_64
kernel-tools-debuginfo-5.15.50-23.125.amzn2.x86_64
bpftool-5.15.50-23.125.amzn2.x86_64
bpftool-debuginfo-5.15.50-23.125.amzn2.x86_64
kernel-devel-5.15.50-23.125.amzn2.x86_64
kernel-debuginfo-5.15.50-23.125.amzn2.x86_64
kernel-livepatch-5.15.50-23.125-1.0-0.amzn2.x86_64