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Amazon Linux 2 version 2.0.20210525.0 release notes

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Amazon Linux 2 version 2.0.20210525.0 release notes - Amazon Linux 2

These are the release notes for Amazon Linux 2 version 2.0.20210525.0.

Major updates

  • Updated chrony to 4.0 from 3.5.1

Package updates

Amazon Linux 2 includes the following packages.

Packages

bind-export-libs-9.11.4-26.P2.amzn2.5.aarch64

bind-export-libs-9.11.4-26.P2.amzn2.5.x86_64

bind-libs-9.11.4-26.P2.amzn2.5.aarch64

bind-libs-9.11.4-26.P2.amzn2.5.x86_64

bind-libs-lite-9.11.4-26.P2.amzn2.5.aarch64

bind-libs-lite-9.11.4-26.P2.amzn2.5.x86_64

bind-license-9.11.4-26.P2.amzn2.5.noarch

bind-utils-9.11.4-26.P2.amzn2.5.aarch64

bind-utils-9.11.4-26.P2.amzn2.5.x86_64

chrony-4.0-3.amzn2.0.1.aarch64

chrony-4.0-3.amzn2.0.1.x86_64

ec2-utils-1.2-44.amzn2.noarch

glibc-2.26-45.amzn2.aarch64

glibc-2.26-45.amzn2.x86_64

glibc-all-langpacks-2.26-45.amzn2.aarch64

glibc-all-langpacks-2.26-45.amzn2.x86_64

glibc-common-2.26-45.amzn2.aarch64

glibc-common-2.26-45.amzn2.x86_64

glibc-devel-2.26-45.amzn2.x86_64

glibc-headers-2.26-45.amzn2.x86_64

glibc-langpack-en-2.26-45.amzn2.aarch64

glibc-langpack-en-2.26-45.amzn2.x86_64

glibc-locale-source-2.26-45.amzn2.aarch64

glibc-locale-source-2.26-45.amzn2.x86_64

glibc-minimal-langpack-2.26-45.amzn2.aarch64

glibc-minimal-langpack-2.26-45.amzn2.x86_64

kernel-4.14.232-176.381.amzn2.aarch64

kernel-4.14.232-176.381.amzn2.x86_64

kernel-devel-4.14.232-176.381.amzn2.x86_64

kernel-headers-4.14.232-176.381.amzn2.x86_64

kernel-tools-4.14.232-176.381.amzn2.aarch64

kernel-tools-4.14.232-176.381.amzn2.x86_64

libcrypt-2.26-45.amzn2.aarch64

libcrypt-2.26-45.amzn2.x86_64

libjpeg-turbo-2.0.90-2.amzn2.0.1.aarch64

libjpeg-turbo-2.0.90-2.amzn2.0.1.x86_64

openldap-2.4.44-23.amzn2.aarch64

openldap-2.4.44-23.amzn2.x86_64

python2-setuptools-41.2.0-4.amzn2.0.2.noarch

python3-3.7.9-1.amzn2.0.3.aarch64

python3-3.7.9-1.amzn2.0.3.x86_64

python3-libs-3.7.9-1.amzn2.0.3.aarch64

python3-libs-3.7.9-1.amzn2.0.3.x86_64

python3-pip-20.2.2-1.amzn2.0.2.noarch

python3-setuptools-49.1.3-1.amzn2.0.2.noarch

Kernel updates

Rebase kernel to upstream stable 4.14.232.

Lustre: Update to Client v2.10.8-7

CVEs fixed:

  • CVE-2020-29374 [gup: document and work around "COW can break either way" issue]

  • CVE-2021-23133 [net/sctp: fix race condition in sctp_destroy_sock]

Amazon Features and Backports:

  • bpf: Fixes up selftests after backports were fixed

  • bpf, selftests: Fixes up some test_verifier cases for unprivileged

  • bpf: Moves off_reg into sanitize_ptr_alu

  • bpf: Ensures off_reg has no mixed signed bounds for all types

  • bpf: Reworkes ptr_limit into alu_limit and add common error path

  • bpf: Improves verifier error messages for users

  • bpf: Refactors and streamlines bounds check into helper

  • bpf: Moves sanitize_val_alu out of op switch

  • bpf: Tightens speculative pointer arithmetic mask

  • bpf: Updates selftests to reflect new error states

  • bpf: Doesn't allow root to mangle valid pointers

  • bpf/verifier: Doesn't allow pointer subtraction

  • selftests/bpf: Fixes test_align

  • selftests/bpf: Makes 'dubious pointer arithmetic' test useful

  • bpf: Fixes masking negation logic upon negative dst register

  • bpf: Fixes leakage of uninitialized bpf stack under speculation

  • Reverts "net/sctp: fix race condition in sctp_destroy_sock"

  • sctp: Delays auto_asconf init until binding the first addr

  • cifs: Fixes panic in smb2_reconnect

Other Fixes:

  • arm64: Fixes inline asm in load_unaligned_zeropad()

  • ext4: Corrects the error label in ext4_rename()

  • x86/crash: Fixes crash_setup_memmap_entries() out-of-bounds access

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