Amazon Linux 2 Security Advisory: ALASKERNEL-5.10-2022-019
Advisory Release Date: 2022-08-15 21:23 Pacific
Advisory Updated Date: 2024-08-01 01:11 Pacific
FAQs regarding Amazon Linux ALAS/CVE Severity
2024-08-01: CVE-2022-48627 was added to this advisory.
2023-08-31: CVE-2022-1462 was added to this advisory.
An out-of-bounds read flaw was found in the Linux kernel's TeleTYpe subsystem. The issue occurs in how a user triggers a race condition using ioctls TIOCSPTLCK and TIOCGPTPEER and TIOCSTI and TCXONC with leakage of memory in the flush_to_ldisc function. This flaw allows a local user to crash the system or read unauthorized random data from memory. (CVE-2022-1462)
A bug in the IMA subsystem was discovered which would incorrectly allow kexec to be used when kernel lockdown was enabled (CVE-2022-21505)
Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate is unused by its CNA. Notes: none. (CVE-2022-23816)
A flaw was found in hw. Aliases in the branch predictor may cause some AMD processors to predict the wrong branch type, potentially leading to information disclosure. (CVE-2022-23825)
Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access. (CVE-2022-26373)
A flaw was found in hw. The unprotected alternative channel of return branch target prediction in some Intel(R) Processors may allow an authorized user to enable information disclosure via local access. (CVE-2022-28693)
A flaw was found in hw. Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions. (CVE-2022-29900)
Intel microprocessor generations 6 to 8 are affected by a new Spectre variant that is able to bypass their retpoline mitigation in the kernel to leak arbitrary data. An attacker with unprivileged user access can hijack return instructions to achieve arbitrary speculative code execution under certain microarchitecture-dependent conditions. (CVE-2022-29901)
A memory access flaw was found in the Linux kernel's XEN hypervisor for the virtual machine. This flaw allows a local user to crash the system or potentially escalate their privileges on the system. (CVE-2022-36123)
An issue was discovered in the Linux kernel through 5.18.14. xfrm_expand_policies in net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice. (CVE-2022-36879)
A memory corruption flaw was found in the Linux kernel's Netfilter subsystem in the way a local user uses the libnetfilter_queue when analyzing a corrupted network packet. This flaw allows a local user to crash the system or a remote user to crash the system when the libnetfilter_queue is used by a local user. (CVE-2022-36946)
In the Linux kernel, the following vulnerability has been resolved:
vt: fix memory overlapping when deleting chars in the buffer (CVE-2022-48627)
A NULL pointer dereference issue was found in the SCTP network protocol in net/sctp/stream_sched.c in the Linux kernel. If stream_in allocation fails, stream_out is freed, which would be accessed further. This flaw allows a local user to crash the system or potentially cause a denial of service. (CVE-2023-2177)
Affected Packages:
kernel
Note:
This advisory is applicable to Amazon Linux 2 - Kernel-5.10 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-5.10.135-122.509.amzn2.aarch64
kernel-headers-5.10.135-122.509.amzn2.aarch64
kernel-debuginfo-common-aarch64-5.10.135-122.509.amzn2.aarch64
perf-5.10.135-122.509.amzn2.aarch64
perf-debuginfo-5.10.135-122.509.amzn2.aarch64
python-perf-5.10.135-122.509.amzn2.aarch64
python-perf-debuginfo-5.10.135-122.509.amzn2.aarch64
kernel-tools-5.10.135-122.509.amzn2.aarch64
kernel-tools-devel-5.10.135-122.509.amzn2.aarch64
kernel-tools-debuginfo-5.10.135-122.509.amzn2.aarch64
bpftool-5.10.135-122.509.amzn2.aarch64
bpftool-debuginfo-5.10.135-122.509.amzn2.aarch64
kernel-devel-5.10.135-122.509.amzn2.aarch64
kernel-debuginfo-5.10.135-122.509.amzn2.aarch64
kernel-livepatch-5.10.135-122.509-1.0-0.amzn2.aarch64
i686:
kernel-headers-5.10.135-122.509.amzn2.i686
src:
kernel-5.10.135-122.509.amzn2.src
x86_64:
kernel-5.10.135-122.509.amzn2.x86_64
kernel-headers-5.10.135-122.509.amzn2.x86_64
kernel-debuginfo-common-x86_64-5.10.135-122.509.amzn2.x86_64
perf-5.10.135-122.509.amzn2.x86_64
perf-debuginfo-5.10.135-122.509.amzn2.x86_64
python-perf-5.10.135-122.509.amzn2.x86_64
python-perf-debuginfo-5.10.135-122.509.amzn2.x86_64
kernel-tools-5.10.135-122.509.amzn2.x86_64
kernel-tools-devel-5.10.135-122.509.amzn2.x86_64
kernel-tools-debuginfo-5.10.135-122.509.amzn2.x86_64
bpftool-5.10.135-122.509.amzn2.x86_64
bpftool-debuginfo-5.10.135-122.509.amzn2.x86_64
kernel-devel-5.10.135-122.509.amzn2.x86_64
kernel-debuginfo-5.10.135-122.509.amzn2.x86_64
kernel-livepatch-5.10.135-122.509-1.0-0.amzn2.x86_64