What’s Vulnerable › Vulnerabilities
CVE-2021-28660
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2021-03-17 · updated 2026-06-17
- Weakness: CWE-787
Description
rtw_wx_set_scan in drivers/staging/rtl8188eu/os_dep/ioctl_linux.c in the Linux kernel through 5.11.6 allows writing beyond the end of the ->ssid[] array. NOTE: from the perspective of kernel.org releases, CVE IDs are not normally used for drivers/staging/* (unfinished work); however, system integrators may have situations in which a drivers/staging issue is relevant to their own customer base.
Affected products
- Debian Linux: 9.0
- Fedoraproject Fedora: 33
- Linux kernel: from 3.12 before 4.4.262; from 4.5 before 4.9.262; from 4.10 before 4.14.226; from 4.15 before 4.19.181; from 4.20 before 5.4.106; from 5.5 before 5.10.24 — fixed in 4.14.226, 4.19.181, 4.4.262, 4.9.262, 5.10.24, 5.11.7
- NetApp Cloud Backup: all versions
- NetApp H300E Firmware: all versions
- NetApp H300S 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
- NetApp Solidfire Baseboard Management Controller Firmware: all versions
How to fix
Upgrade to a fixed version: Linux kernel 4.14.226, 4.19.181, 4.4.262, 4.9.262. Check the vendor advisory for mitigations.
References
- http://www.openwall.com/lists/oss-security/2022/11/18/1
- http://www.openwall.com/lists/oss-security/2022/11/21/2
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=74b6b20df8cfe90ada777d621b54c32e69e27cd7
- https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TJPVQZPY3DHPV5I3IVNMSMO6D3PKZISX/
- https://security.netapp.com/advisory/ntap-20210507-0008/
- http://www.openwall.com/lists/oss-security/2022/11/18/1
- http://www.openwall.com/lists/oss-security/2022/11/21/2
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=74b6b20df8cfe90ada777d621b54c32e69e27cd7
- https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
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