CVE-2021-47485: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields Overflowing either addrlimit or bytes_togo can allow userspace to trigger a buffer overflow of kernel memory. Check for overflows in all the places doing math on user controlled buffers.

Affected products

• Linux Linux Kernel: from 2.6.35, before 4.4.292 (fixed in 4.4.292); from 4.5, before 4.9.290 (fixed in 4.9.290); from 4.10, before 4.14.255 (fixed in 4.14.255); from 4.15, before 4.19.216 (fixed in 4.19.216); from 4.20, before 5.4.157 (fixed in 5.4.157); from 5.5, before 5.10.77 (fixed in 5.10.77); …

Published 2024-05-22. Last modified 2026-08-04.