What’s Vulnerable › Vulnerabilities

CVE-2021-47398: RDMA/hfi1: Fix kernel pointer leak

• Severity: medium (CVSS 5.5 v3.1)
• 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: 2024-05-21 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/hfi1: Fix kernel pointer leak Pointers should be printed with %p or %px rather than cast to 'unsigned long long' and printed with %llx. Change %llx to %p to print the secured pointer.

Affected products

• Linux kernel: from 5.13 before 5.14.10; 5.15-rc1, 5.15-rc2, 5.15-rc3 — fixed in 5.14.10

How to fix

Upgrade to a fixed version: Linux kernel 5.14.10. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/714bfabe5f2901d96902e271d7217601fe4703e5
• https://git.kernel.org/stable/c/7d5cfafe8b4006a75b55c2f1fdfdb363f9a5cc98
• https://git.kernel.org/stable/c/714bfabe5f2901d96902e271d7217601fe4703e5
• https://git.kernel.org/stable/c/7d5cfafe8b4006a75b55c2f1fdfdb363f9a5cc98

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