EUVD-2021-33581

🗓️ 03 Oct 2025 20:07:09Reported by EUVDType

Linux kernel USB vulnerability fixed to prevent refcount underflow for eventfd calls in f_fs.

Reporter	Title	Published	Views	Family All 273
ATTACKERKB	CVE-2021-46933	27 Feb 202410:15	–	attackerkb
AstraLinux	Astra Linux - уязвимость в linux, linux-5.10	20 May 202605:53	–	astralinux
Circl	CVE-2021-46933	27 Feb 202411:32	–	circl
CNNVD	Linux kernel security vulnerabilities	27 Feb 202400:00	–	cnnvd
CVE	CVE-2021-46933	27 Feb 202409:44	–	cve
Cvelist	CVE-2021-46933 usb: gadget: f_fs: Clear ffs_eventfd in ffs_data_clear.	27 Feb 202409:44	–	cvelist
Debian CVE	CVE-2021-46933	27 Feb 202409:44	–	debiancve
NVD	CVE-2021-46933	27 Feb 202410:15	–	nvd
OpenVAS	openSUSE Security Advisory (SUSE-SU-2024:1322-1)	19 Apr 202400:00	–	openvas
OpenVAS	openSUSE: Security Advisory for the Linux Kernel (SUSE-SU-2024:1320-1)	19 Apr 202400:00	–	openvas

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Source	Link
git	www.git.kernel.org/stable/c/f976dd7011150244a7ba820f2c331e9fb253befa
git	www.git.kernel.org/stable/c/cc8c8028c21b2a3842a1e98e99e55028df275919
git	www.git.kernel.org/stable/c/52500239e3f2d6fc77b6f58632a9fb98fe74ac09
git	www.git.kernel.org/stable/c/33f6a0cbb7772146e1c11f38028fffbfed14728b
git	www.git.kernel.org/stable/c/240fc586e83d645912accce081a48aa63a45f6ee
git	www.git.kernel.org/stable/c/1c4ace3e6b8575745c50dca9e76e0021e697d645
git	www.git.kernel.org/stable/c/ebef2aa29f370b5096c16020c104e393192ef684
git	www.git.kernel.org/stable/c/b1e0887379422975f237d43d8839b751a6bcf154

03 Oct 2025 20:07Current

6.9Medium risk

Vulners AI Score6.9

CVSS 3.15.5

EPSS0.00015

SSVC