CVE-2021-3483
Medium
Elevated severity or exploit probability.
CVSS base
7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
0.4%
29.9th percentile
CISA KEV
Not listed
Weakness / dates
CWE-416
Published 2021-05-17 · modified 2026-08-05
CVSS breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
| Attack Vector | L | Local |
| Attack Complexity | L | Low |
| Privileges Required | L | Low |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | H | High |
| Integrity | H | High |
| Availability | H | High |
Timeline
- 2021-05-17 — Published (NVD)
- 2026-08-05 — Last modified (NVD)
Description
A flaw was found in the Nosy driver in the Linux kernel. This issue allows a device to be inserted twice into a doubly-linked list, leading to a use-after-free when one of these devices is removed. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Versions before kernel 5.12-rc6 are affected
Affected
References
- http://www.openwall.com/lists/oss-security/2021/04/07/1
- https://bugzilla.redhat.com/show_bug.cgi?id=1948045
- https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
- https://security.netapp.com/advisory/ntap-20210629-0002/
- http://www.openwall.com/lists/oss-security/2021/04/07/1
- https://bugzilla.redhat.com/show_bug.cgi?id=1948045
- https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
- https://security.netapp.com/advisory/ntap-20210629-0002/