What’s Vulnerable › Vulnerabilities

CVE-2023-52997: ipv4: prevent potential spectre v1 gadget in ip_metrics_convert()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-03-27 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: ipv4: prevent potential spectre v1 gadget in ip_metrics_convert() if (!type) continue; if (type > RTAX_MAX) return -EINVAL; ... metrics[type - 1] = val; @type being used as an array index, we need to prevent cpu speculation or risk leaking kernel memory content.

Affected products

• Linux kernel: from 4.3 before 4.19.272; from 4.20 before 5.4.231; from 5.5 before 5.10.166; from 5.11 before 5.15.91; from 5.16 before 6.1.9; 6.2-rc1, 6.2-rc2, 6.2-rc3, 6.2-rc4, 6.2-rc5 — fixed in 4.19.272, 5.10.166, 5.15.91, 5.4.231, 6.1.9

How to fix

Upgrade to a fixed version: Linux kernel 4.19.272, 5.10.166, 5.15.91, 5.4.231. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1d1d63b612801b3f0a39b7d4467cad0abd60e5c8
• https://git.kernel.org/stable/c/34c6142f0df9cd75cba5a7aa9df0960d2854b415
• https://git.kernel.org/stable/c/6850fe301d015a7d2012d1de8caf43dafb7cc2f6
• https://git.kernel.org/stable/c/746db9ec1e672eee13965625ddac0d97e16fa20c
• https://git.kernel.org/stable/c/d50e7348b44f1e046121ff5be01b7fb6978a1149
• https://git.kernel.org/stable/c/ef050cf5fb70d995a0d03244e25179b7c66a924a

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