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Improper Validation of Array Index The advisory has been revoked - it doesn't affect any version of package kernel-64k-devel  (opens in a new tab)

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EPSS
0.03% (5th percentile)

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  • Snyk IDSNYK-CENTOS9-KERNEL64KDEVEL-9541662
  • published28 Mar 2025
  • disclosed27 Mar 2025
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Introduced: 27 Mar 2025

CVE-2023-53000  (opens in a new tab)
CWE-129  (opens in a new tab)

Amendment

The Centos security team deemed this advisory irrelevant for Centos:9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-64k-devel package and not the kernel-64k-devel package as distributed by Centos.

In the Linux kernel, the following vulnerability has been resolved:

netlink: prevent potential spectre v1 gadgets

Most netlink attributes are parsed and validated from __nla_validate_parse() or validate_nla()

u16 type = nla_type(nla);


if (type == 0 || type > maxtype) {
    /* error or continue */
}

@type is then used as an array index and can be used as a Spectre v1 gadget.

array_index_nospec() can be used to prevent leaking content of kernel memory to malicious users.

This should take care of vast majority of netlink uses, but an audit is needed to take care of others where validation is not yet centralized in core netlink functions.