CVE-2025-38568

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

7.8 /10

CVSS v3 : HIGH

V3 Legend

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

26 Nov 2025, 20:04

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/39491e859fd494d0b51adc5c7d54c8a7dcf1d198 - () https://git.kernel.org/stable/c/39491e859fd494d0b51adc5c7d54c8a7dcf1d198 - Patch
References () https://git.kernel.org/stable/c/66fc2ebdd9d5dd6e5a9c7edeace5a61a0ab2cd86 - () https://git.kernel.org/stable/c/66fc2ebdd9d5dd6e5a9c7edeace5a61a0ab2cd86 - Patch
References () https://git.kernel.org/stable/c/d00e4125680f7074c4f42ce3c297336f23128e70 - () https://git.kernel.org/stable/c/d00e4125680f7074c4f42ce3c297336f23128e70 - Patch
References () https://git.kernel.org/stable/c/f1a9dbcb7d17bf0abb325cdc984957cfabc59693 - () https://git.kernel.org/stable/c/f1a9dbcb7d17bf0abb325cdc984957cfabc59693 - Patch
References () https://git.kernel.org/stable/c/ffd2dc4c6c49ff4f1e5d34e454a6a55608104c17 - () https://git.kernel.org/stable/c/ffd2dc4c6c49ff4f1e5d34e454a6a55608104c17 - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
First Time Linux
Linux linux Kernel
CWE CWE-787
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8

20 Aug 2025, 14:40

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/sched: mqprio: se corrige una escritura fuera de los límites en la pila durante el análisis de la entrada tc. TCA_MQPRIO_TC_ENTRY_INDEX se valida mediante NLA_POLICY_MAX(NLA_U32, TC_QOPT_MAX_QUEUE), que permite el valor TC_QOPT_MAX_QUEUE (16). Esto provoca una escritura fuera de los límites de 4 bytes en la matriz fp[], que solo admite 16 elementos (0-15). Para solucionar esto, modifique la política para permitir solo hasta TC_QOPT_MAX_QUEUE - 1.

19 Aug 2025, 17:15

Type Values Removed Values Added
New CVE
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