CVE-2026-23105

In the Linux kernel, the following vulnerability has been resolved: net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag This is more of a preventive patch to make the code more consistent and to prevent possible exploits that employ child qlen manipulations on qfq. use cl_is_active instead of relying on the child qdisc's qlen to determine class activation.

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/77f1afd0bb4d5da95236f6114e6d0dfcde187ff6	Patch
https://git.kernel.org/stable/c/93b8635974fb050c43d07e35e5edfe6e685ca28a	Patch
https://git.kernel.org/stable/c/abd9fc26ea577561a5ef6241a1b058755ffdad0c	Patch
https://git.kernel.org/stable/c/b8c24cf5268fb3bfb8d16324c3dbb985f698c835	Patch
https://git.kernel.org/stable/c/d837fbee92453fbb829f950c8e7cf76207d73f33	Patch
https://git.kernel.org/stable/c/f27047abf7cac1b6f90c3ad60de21ef9f717c26d	Patch
https://git.kernel.org/stable/c/fac2c67bb2bb732eae4283e45fc338af7e08c254	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::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc4::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc5::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc6::::::

History

19 Oct 2026, 19:17

Type	Values Removed	Values Added
CWE		CWE-20

Information

Published : 2026-02-04 17:16

Updated : 2026-10-19 19:17

NVD link : CVE-2026-23105

Mitre link : CVE-2026-23105

CVE.ORG link : CVE-2026-23105

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo CWE-20

Improper Input Validation

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de qlen secundarias en qfq.\nusar cl_is_active en lugar de depender del qlen del qdisc secundario para determinar la activaci\u00f3n de la clase."}], "lastModified": "2026-10-19T19:17:36.797", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C1D3B462-A229-4130-A191-F09550344C59", "versionEndExcluding": "5.10.249", "versionStartIncluding": "3.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A247FBA6-BEB9-484F-B892-DD5517949CCD", "versionEndExcluding": "5.15.199", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6579E0D4-0641-479D-A4C3-0EF618798C55", "versionEndExcluding": "6.1.162", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": 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