CVE-2023-53661 bnxt: avoid overflow in bnxt_get_nvram_directory()

What is CVE-2023-53661?

CVE-2023-53661 is a medium-severity vulnerability in Linux kernel, published on 7 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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

bnxt: avoid overflow in bnxt_get_nvram_directory()

The value of an arithmetic expression is subject of possible overflow due to a failure to cast operands to a larger data type before performing arithmetic. Used macro for multiplication instead operator for avoiding overflow.

Found by Security Code and Linux Verification Center (linuxtesting.org) with SVACE.

Weakness: CWE-190

Which versions are affected by CVE-2023-53661?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2023-53661?

Apply the vendor's patch.

Is CVE-2023-53661 being exploited?

There is no known exploitation of CVE-2023-53661 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2023-53661, DEBIAN-CVE-2023-53661, GHSA-q9gj-c2m7-hf6g, ROOT-OS-DEBIAN-11-CVE-2023-53661, UBUNTU-CVE-2023-53661.