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Medium ALAS2-2024-2525 2 CVEs

Moderate: kernel security update (Amazon Linux 2)

Published Apr 24, 2024 · Updated Apr 24, 2024

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2024-26602: In the Linux kernel, the following vulnerability has been resolved: sched/membarrier: reduce the ability to hammer on sys_membarrier On some systems, sys_membarrier can be very expensive, causing overall slowdowns for everything. So put a lock on the path in order to serialize the accesses to prevent the ability for this to be called at too high of a frequency and saturate the machine. CVE-2024-2193: A Speculative Race Condition (SRC) vulnerability that impacts modern CPU architectures supporting speculative execution (related to Spectre V1) has been disclosed. An unauthenticated attacker can exploit this vulnerability to disclose arbitrary data from the CPU using race conditions to access the speculative executable code paths.

Fixed packages 14

ReleasePackageFixed in
Amazon Linux · 2 kernel 0:4.14.336-257.568.amzn2
Amazon Linux · 2 kernel-debuginfo 0:4.14.336-257.568.amzn2
Amazon Linux · 2 kernel-debuginfo-common-aarch64 0:4.14.336-257.568.amzn2
Amazon Linux · 2 kernel-debuginfo-common-x86_64 0:4.14.336-257.568.amzn2
Amazon Linux · 2 kernel-devel 0:4.14.336-257.568.amzn2
Amazon Linux · 2 kernel-headers 0:4.14.336-257.568.amzn2
Amazon Linux · 2 kernel-livepatch-4.14.336-257.568 0:1.0-0.amzn2
Amazon Linux · 2 kernel-tools 0:4.14.336-257.568.amzn2
Amazon Linux · 2 kernel-tools-debuginfo 0:4.14.336-257.568.amzn2
Amazon Linux · 2 kernel-tools-devel 0:4.14.336-257.568.amzn2
Amazon Linux · 2 perf 0:4.14.336-257.568.amzn2
Amazon Linux · 2 perf-debuginfo 0:4.14.336-257.568.amzn2
Amazon Linux · 2 python-perf 0:4.14.336-257.568.amzn2
Amazon Linux · 2 python-perf-debuginfo 0:4.14.336-257.568.amzn2

Vulnerabilities 2

  • Medium 5.7
    CVE-2024-2193 Public exploit

    Speculative Race Condition impacts modern CPU architectures that support speculative execution, also known as GhostRace.

    A Speculative Race Condition (SRC) vulnerability that impacts modern CPU architectures supporting speculative execution (related to Spectre V1) has been disclosed. An unauthenticated attacker can exploit this vulnerability to disclose arbitrary data from the …

    AMD Xen Xen CPU Virtualization Debian Ubuntu Alpine
  • Unscored —
    CVE-2024-26602

    sched/membarrier: reduce the ability to hammer on sys_membarrier

    In the Linux kernel, the following vulnerability has been resolved: sched/membarrier: reduce the ability to hammer on sys_membarrier On some systems, sys_membarrier can be very expensive, causing overall slowdowns for everything. So put a lock on the path in …

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

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2024-2193.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2024-26602.html