QID 355850

QID 355850: Amazon Linux Security Advisory for kernel-livepatch : ALAS2LIVEPATCH-2023-139

A flaw was found in the linux kernel's networking subsystem within the rpl protocol's handling.
This issue results from the improper handling of user-supplied data, which can lead to an assertion failure.
This flaw allows an unauthenticated, remote attacker to create a denial of service condition on the system. (
( CVE-2023-2156) a heap out-of-bounds write vulnerability in the linux kernel ipvlan network driver can be exploited to achieve local privilege escalation. the out-of-bounds write is caused by missing skb->cb initialization in the ipvlan network driver.
The vulnerability is reachable if config_ipvlan is enabled. we recommend upgrading past commit 90cbed5247439a966b645b34eb0a2e037836ea8e. (
( CVE-2023-3090) an issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the linux kernel before 6.3.7.
It allows an out-of-bounds write in the flower classifier code via tca_flower_key_enc_opts_geneve packets.
This may result in denial of service or privilege escalation. (
( CVE-2023-35788)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as High - 7.8 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2LIVEPATCH-2023-139 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 355850

    CVE-2023-3090 | CVE-2023-2156 | CVE-2023-35788 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2LIVEPATCH-2023-139 amazon linux 2 URL Logo alas.aws.amazon.com/AL2/ALASLIVEPATCH-2023-139.html
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