What’s Vulnerable › Vulnerabilities
CVE-2021-3483
- Severity: high (CVSS 7.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2021-05-17 · updated 2026-08-05
- Weakness: CWE-416
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 products
- Debian Linux: 9.0
- Linux kernel: before 5.12; 5.12-rc1, 5.12-rc2, 5.12-rc3, 5.12-rc4, 5.12-rc5 — fixed in 5.12
- NetApp Cloud Backup: all versions
- NetApp H300E Firmware: all versions
- NetApp H300S Firmware: all versions
- NetApp H410C Firmware: all versions
- NetApp H410S Firmware: all versions
- NetApp H500E Firmware: all versions
- NetApp H500S Firmware: all versions
- NetApp H700E Firmware: all versions
- NetApp H700S Firmware: all versions
How to fix
Upgrade to a fixed version: Linux kernel 5.12. Check the vendor advisory for mitigations.
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/
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