CVE-2023-53398

In the Linux kernel, the following vulnerability has been resolved: mlx5: fix possible ptp queue fifo use-after-free Fifo indexes are not checked during pop operations and it leads to potential use-after-free when poping from empty queue. Such case was possible during re-sync action. WARN_ON_ONCE covers future cases. There were out-of-order cqe spotted which lead to drain of the queue and use-after-free because of lack of fifo pointers check. Special check and counter are added to avoid resync operation if SKB could not exist in the fifo because of OOO cqe (skb_id must be between consumer and producer index).

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/3a50cf1e8e5157b82268eee7e330dbe5736a0948	Patch
https://git.kernel.org/stable/c/52e6e7a0bc04c85012a9251c7cf2d444a77eb966	Patch
https://git.kernel.org/stable/c/6afdedc4e66e3846ce497744f01b95c34bf39d21	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2025-09-18 14:15

Updated : 2026-01-14 19:16

NVD link : CVE-2023-53398

Mitre link : CVE-2023-53398

CVE.ORG link : CVE-2023-53398

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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