What’s Vulnerable › Vulnerabilities

CVE-2025-38719: net: hibmcge: fix the division by zero issue

• 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: 2025-09-04 · updated 2026-10-19
• Weakness: CWE-369

Description

In the Linux kernel, the following vulnerability has been resolved: net: hibmcge: fix the division by zero issue When the network port is down, the queue is released, and ring->len is 0. In debugfs, hbg_get_queue_used_num() will be called, which may lead to a division by zero issue. This patch adds a check, if ring->len is 0, hbg_get_queue_used_num() directly returns 0.

Affected products

• Linux kernel: from 6.13 before 6.15.11; from 6.16 before 6.16.2; 6.17-rc1 — fixed in 6.15.11, 6.16.2

How to fix

Upgrade to a fixed version: Linux kernel 6.15.11, 6.16.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/475e06113c615dafd44262d6d6bd37786f7f4206
• https://git.kernel.org/stable/c/7004b26f0b64331143eb0b312e77a357a11427ce
• https://git.kernel.org/stable/c/c945e1ad4f3b77166a3215dabc0c6c980d4a9c73

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