What’s Vulnerable › Vulnerabilities

CVE-2023-53397: modpost: fix off by one in is_executable_section()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-18 · updated 2026-06-17
• Weakness: CWE-193

Description

In the Linux kernel, the following vulnerability has been resolved: modpost: fix off by one in is_executable_section() The > comparison should be >= to prevent an out of bounds array access.

Affected products

• Linux kernel: from 4.1 before 4.14.322; from 4.15 before 5.4.251; from 5.5 before 5.10.188; from 5.11 before 5.15.121; from 5.16 before 6.1.39; from 6.2 before 6.3.13 — fixed in 4.14.322, 5.10.188, 5.15.121, 5.4.251, 6.1.39, 6.3.13

How to fix

Upgrade to a fixed version: Linux kernel 4.14.322, 5.10.188, 5.15.121, 5.4.251. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/02dc8e8bdbe4412cfcf17ee3873e63fa5a55b957
• https://git.kernel.org/stable/c/3a3f1e573a105328a2cca45a7cfbebabbf5e3192
• https://git.kernel.org/stable/c/5e0424cd8a44b5f480feb06753cdf4e1f248d148
• https://git.kernel.org/stable/c/7ee557590bac154d324de446d1cd0444988bd511
• https://git.kernel.org/stable/c/8b2e77050b91199453bf19d0517b047b7339a9e3
• https://git.kernel.org/stable/c/cade370efe2f9e2a79ea8587506ffe2b51ac6d2b
• https://git.kernel.org/stable/c/cb0cdca5c979bc34c27602e2039562932c2591a4
• https://git.kernel.org/stable/c/dd872d5576cc94528f427c7264c2c438928cc6d2

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