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High 1 exploited CVE ALAS2023-2026-1709 2 CVEs

Important: kernel6.18 security update (Amazon Linux 2023)

Published May 14, 2026 · Updated Jun 16, 2026

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-46300: In the Linux kernel, the following vulnerability has been resolved: net: skbuff: propagate shared-frag marker through pskb_copy() CVE-2026-43503: In the Linux kernel, the following vulnerability has been resolved: net: skbuff: propagate shared-frag marker through frag-transfer helpers

Fixed packages 18

ReleasePackageFixed in
Amazon Linux · 2023 bpftool6.18 1:6.18.25-57.109.amzn2023
Amazon Linux · 2023 bpftool6.18-debuginfo 1:6.18.25-57.109.amzn2023
Amazon Linux · 2023 kernel-livepatch-6.18.25-57.109 1:1.0-0.amzn2023
Amazon Linux · 2023 kernel6.18 1:6.18.25-57.109.amzn2023
Amazon Linux · 2023 kernel6.18-debuginfo 1:6.18.25-57.109.amzn2023
Amazon Linux · 2023 kernel6.18-debuginfo-common-aarch64 1:6.18.25-57.109.amzn2023
Amazon Linux · 2023 kernel6.18-debuginfo-common-x86_64 1:6.18.25-57.109.amzn2023
Amazon Linux · 2023 kernel6.18-devel 1:6.18.25-57.109.amzn2023
Amazon Linux · 2023 kernel6.18-headers 1:6.18.25-57.109.amzn2023
Amazon Linux · 2023 kernel6.18-modules-extra 1:6.18.25-57.109.amzn2023
Amazon Linux · 2023 kernel6.18-modules-extra-common 1:6.18.25-57.109.amzn2023
Amazon Linux · 2023 kernel6.18-tools 1:6.18.25-57.109.amzn2023
Amazon Linux · 2023 kernel6.18-tools-debuginfo 1:6.18.25-57.109.amzn2023
Amazon Linux · 2023 kernel6.18-tools-devel 1:6.18.25-57.109.amzn2023
Amazon Linux · 2023 perf6.18 1:6.18.25-57.109.amzn2023
Amazon Linux · 2023 perf6.18-debuginfo 1:6.18.25-57.109.amzn2023
Amazon Linux · 2023 python3-perf6.18 1:6.18.25-57.109.amzn2023
Amazon Linux · 2023 python3-perf6.18-debuginfo 1:6.18.25-57.109.amzn2023

Vulnerabilities 2

  • High 7.8
    CVE-2026-46300 Exploited Public exploit EPSS 16%

    net: skbuff: preserve shared-frag marker during coalescing

    In the Linux kernel, the following vulnerability has been resolved: net: skbuff: preserve shared-frag marker during coalescing skb_try_coalesce() can attach paged frags from @from to @to. If @from has SKBFL_SHARED_FRAG set, the resulting @to skb can contain t…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
    KEV Oct 28, 2026
  • High 8.8
    CVE-2026-43503 Public exploit

    net: skbuff: propagate shared-frag marker through frag-transfer helpers

    In the Linux kernel, the following vulnerability has been resolved: net: skbuff: propagate shared-frag marker through frag-transfer helpers Two frag-transfer helpers (__pskb_copy_fclone() and skb_shift()) fail to propagate the SKBFL_SHARED_FRAG bit in skb_shi…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-43503.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-46300.html