Resource Exhaustion Affecting kernel-debuginfo-common-x86_64 package, versions <0:4.14.123-111.109.amzn2


Severity

Recommended
critical

Based on Amazon Linux security rating

    Threat Intelligence

    EPSS
    96.44% (100th percentile)

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  • Snyk ID SNYK-AMZN2-KERNELDEBUGINFOCOMMONX8664-1670918
  • published 27 Sep 2021
  • disclosed 19 Jun 2019

How to fix?

Upgrade Amazon-Linux:2 kernel-debuginfo-common-x86_64 to version 0:4.14.123-111.109.amzn2 or higher.
This issue was patched in ALAS2-2019-1222.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debuginfo-common-x86_64 package and not the kernel-debuginfo-common-x86_64 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit f070ef2ac66716357066b683fb0baf55f8191a2e.

References