CVE-2025-39979
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- CVE-2025-39979
CVE Details
| Release Date: | 2025-10-15 | |
| Impact: | Moderate | What is this? |
Description
In the Linux kernel, the following vulnerability has been resolved:
net/mlx5: fs, fix UAF in flow counter release
Fix a kernel trace [1] caused by releasing an HWS action of a local flow
counter in mlx5_cmd_hws_delete_fte(), where the HWS action refcount and
mutex were not initialized and the counter struct could already be freed
when deleting the rule.
Fix it by adding the missing initializations and adding refcount for the
local flow counter struct.
[1] Kernel log:
Call Trace:
See more information about CVE-2025-39979 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 7.6 |
| Vector String: | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H |
| Version: | 3.1 |
| Attack Vector: | Network |
| Attack Complexity: | Low |
| Privileges Required: | Low |
| User Interaction: | None |
| Scope: | Unchanged |
| Confidentiality Impact: | Low |
| Integrity Impact: | Low |
| Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 10 (kernel) | ELSA-2025-22854 | 2025-12-08 |
| Oracle Linux version 9 (kernel) | ELSA-2025-22865 | 2025-12-09 |
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