What’s Vulnerable › Vulnerabilities

CVE-2024-40999: net: ena: Add validation for completion descriptors consistency

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-07-12 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: net: ena: Add validation for completion descriptors consistency Validate that `first` flag is set only for the first descriptor in multi-buffer packets. In case of an invalid descriptor, a reset will occur. A new reset reason for RX data corruption has been added.

Affected products

• Linux kernel: from 4.9 before 6.9.7 — fixed in 6.9.7
• Linux: 4.9 — fixed in 6.10

How to fix

Upgrade to a fixed version: Linux kernel 6.9.7; Linux 6.10. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/42146ee5286f16f1674a84f7c274dcca65c6ff2e
• https://git.kernel.org/stable/c/4f163a8035e76e835a984cf548b3e6922cfe145f
• https://git.kernel.org/stable/c/b37b98a3a0c1198bafe8c2d9ce0bc845b4e7a9a7
• https://git.kernel.org/stable/c/edb9a302cc9386142beffe5d9bbe4bfd36999eee
• https://git.kernel.org/stable/c/42146ee5286f16f1674a84f7c274dcca65c6ff2e
• https://git.kernel.org/stable/c/b37b98a3a0c1198bafe8c2d9ce0bc845b4e7a9a7

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