CVE-2025-38568

In the Linux kernel, the following vulnerability has been resolved: net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing TCA_MQPRIO_TC_ENTRY_INDEX is validated using NLA_POLICY_MAX(NLA_U32, TC_QOPT_MAX_QUEUE), which allows the value TC_QOPT_MAX_QUEUE (16). This leads to a 4-byte out-of-bounds stack write in the fp[] array, which only has room for 16 elements (0–15). Fix this by changing the policy to allow only up to TC_QOPT_MAX_QUEUE - 1.

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/39491e859fd494d0b51adc5c7d54c8a7dcf1d198	Patch
https://git.kernel.org/stable/c/66fc2ebdd9d5dd6e5a9c7edeace5a61a0ab2cd86	Patch
https://git.kernel.org/stable/c/d00e4125680f7074c4f42ce3c297336f23128e70	Patch
https://git.kernel.org/stable/c/f1a9dbcb7d17bf0abb325cdc984957cfabc59693	Patch
https://git.kernel.org/stable/c/ffd2dc4c6c49ff4f1e5d34e454a6a55608104c17	Patch

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2025-08-19 17:15

Updated : 2025-11-26 20:04

NVD link : CVE-2025-38568

Mitre link : CVE-2025-38568

CVE.ORG link : CVE-2025-38568

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-787

Out-of-bounds Write

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