What’s Vulnerable › Vulnerabilities

CVE-2023-54312: samples/bpf: Fix buffer overflow in tcp_basertt

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-30 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: samples/bpf: Fix buffer overflow in tcp_basertt Using sizeof(nv) or strlen(nv)+1 is correct.

Affected products

• Linux kernel: 4.15 — fixed in 6.5

How to fix

Upgrade to a fixed version: Linux kernel 6.5. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/56c25f2763a16db4fa1b486e6a21dc246cd992bd
• https://git.kernel.org/stable/c/7c08d1b0d1f75117cf82aeaef49ba9f861b3fb59
• https://git.kernel.org/stable/c/bd3e880dce27d225598730d2bbb3dc05b443af22
• https://git.kernel.org/stable/c/cf7514fedc25675e68b74941df28a883951e70fd
• https://git.kernel.org/stable/c/dfc004688518d24159606289c74d0c4e123e6436
• https://git.kernel.org/stable/c/e92f61e0701ea780e57e1be8dbd1fbec5f42c09e
• https://git.kernel.org/stable/c/f394d204d64095d72ad9f03ff98f3f3743bf743a
• https://git.kernel.org/stable/c/f4dea9689c5fea3d07170c2cb0703e216f1a0922

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