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OpenAdvisories
Medium ALAS2-2021-1712 4 CVEs

Moderate: kernel security update (Amazon Linux 2)

Published Oct 4, 2021 · Updated Jan 30, 2023

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2022-20141: In ip_check_mc_rcu of igmp.c, there is a possible use after free due to improper locking. This could lead to local escalation of privilege when opening and closing inet sockets with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-112551163References: Upstream kernel CVE-2021-40490: A flaw was found in the Linux kernel. A race condition was discovered in the ext4 subsystem. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. CVE-2021-3655: A vulnerability was found in the Linux kernel. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory. CVE-2020-16119: A flaw was found in the Linux kernel. When reusing a socket with an attached dccps_hc_tx_ccid as a listener, the socket will be used after being released leading to denial of service (DoS) or a potential code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Fixed packages 14

ReleasePackageFixed in
Amazon Linux · 2 kernel 0:4.14.248-189.473.amzn2
Amazon Linux · 2 kernel-debuginfo 0:4.14.248-189.473.amzn2
Amazon Linux · 2 kernel-debuginfo-common-aarch64 0:4.14.248-189.473.amzn2
Amazon Linux · 2 kernel-debuginfo-common-x86_64 0:4.14.248-189.473.amzn2
Amazon Linux · 2 kernel-devel 0:4.14.248-189.473.amzn2
Amazon Linux · 2 kernel-headers 0:4.14.248-189.473.amzn2
Amazon Linux · 2 kernel-livepatch-4.14.248-189.473 0:1.0-0.amzn2
Amazon Linux · 2 kernel-tools 0:4.14.248-189.473.amzn2
Amazon Linux · 2 kernel-tools-debuginfo 0:4.14.248-189.473.amzn2
Amazon Linux · 2 kernel-tools-devel 0:4.14.248-189.473.amzn2
Amazon Linux · 2 perf 0:4.14.248-189.473.amzn2
Amazon Linux · 2 perf-debuginfo 0:4.14.248-189.473.amzn2
Amazon Linux · 2 python-perf 0:4.14.248-189.473.amzn2
Amazon Linux · 2 python-perf-debuginfo 0:4.14.248-189.473.amzn2

Vulnerabilities 4

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2020-16119.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2021-3655.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2021-40490.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2022-20141.html