Amazon Linux 2 Security Advisory: ALASKERNEL-5.10-2023-030
Advisory Release Date: 2023-04-13 19:51 Pacific
Advisory Updated Date: 2023-04-17 22:54 Pacific
Severity:
Medium
Issue Overview:
An issue was discovered in fs/io_uring.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (deadlock) because exit may be waiting to park a SQPOLL thread, but concurrently that SQPOLL thread is waiting for a signal to start, aka CID-3ebba796fa25. (CVE-2021-28951)
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.
New Packages:
aarch64:
kernel-5.10.29-27.126.amzn2.aarch64
kernel-headers-5.10.29-27.126.amzn2.aarch64
kernel-debuginfo-common-aarch64-5.10.29-27.126.amzn2.aarch64
perf-5.10.29-27.126.amzn2.aarch64
perf-debuginfo-5.10.29-27.126.amzn2.aarch64
python-perf-5.10.29-27.126.amzn2.aarch64
python-perf-debuginfo-5.10.29-27.126.amzn2.aarch64
kernel-tools-5.10.29-27.126.amzn2.aarch64
kernel-tools-devel-5.10.29-27.126.amzn2.aarch64
kernel-tools-debuginfo-5.10.29-27.126.amzn2.aarch64
bpftool-5.10.29-27.126.amzn2.aarch64
bpftool-debuginfo-5.10.29-27.126.amzn2.aarch64
kernel-devel-5.10.29-27.126.amzn2.aarch64
kernel-debuginfo-5.10.29-27.126.amzn2.aarch64
i686:
kernel-headers-5.10.29-27.126.amzn2.i686
src:
kernel-5.10.29-27.126.amzn2.src
x86_64:
kernel-5.10.29-27.126.amzn2.x86_64
kernel-headers-5.10.29-27.126.amzn2.x86_64
kernel-debuginfo-common-x86_64-5.10.29-27.126.amzn2.x86_64
perf-5.10.29-27.126.amzn2.x86_64
perf-debuginfo-5.10.29-27.126.amzn2.x86_64
python-perf-5.10.29-27.126.amzn2.x86_64
python-perf-debuginfo-5.10.29-27.126.amzn2.x86_64
kernel-tools-5.10.29-27.126.amzn2.x86_64
kernel-tools-devel-5.10.29-27.126.amzn2.x86_64
kernel-tools-debuginfo-5.10.29-27.126.amzn2.x86_64
bpftool-5.10.29-27.126.amzn2.x86_64
bpftool-debuginfo-5.10.29-27.126.amzn2.x86_64
kernel-devel-5.10.29-27.126.amzn2.x86_64
kernel-debuginfo-5.10.29-27.126.amzn2.x86_64