QID 356562

Date Published: 2023-11-09

QID 356562: Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2023-055

An issue was discovered in drivers/mtd/ubi/cdev.c in the linux kernel 6.2.
There is a divide-by-zero error in do_div(sz,mtd->erasesize), used indirectly by ctrl_cdev_ioctl, when mtd->erasesize is 0. (
( CVE-2023-31085) a flaw in the kernel xen event handler can cause a deadlock with xen console handling in unprivileged xen guests. (
( CVE-2023-34324) ipv4: fix null-deref in ipv4_link_failure note: https://www.openwall.com/lists/oss-security/2023/10/02/8 note: https://git.kernel.org/linus/0113d9c9d1ccc07f5a3710dac4aa24b6d711278c (6.6-rc3) (cve-2023-42754)



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 Medium - 5.5 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2KERNEL-5.4-2023-055 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 356562

    CVE-2023-42754 | CVE-2023-31085 | CVE-2023-34324 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2KERNEL-5.4-2023-055 amazon linux 2 URL Logo alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2023-055.html
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