CVE-2021-47263: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: gpio: wcd934x: Fix shift-out-of-bounds error bit-mask for pins 0 to 4 is BIT(0) to BIT(4) however we ended up with BIT(n - 1) which is not right, and this was caught by below usban check UBSAN: shift-out-of-bounds in drivers/gpio/gpio-wcd934x.c:34:14

Affected products

• Linux Linux Kernel: from 5.6, before 5.10.44 (fixed in 5.10.44); from 5.11, before 5.12.11 (fixed in 5.12.11); version 5.13 only

Published 2024-05-21. Last modified 2026-06-17.