gpio: wcd934x: Fix shift-out-of-bounds error

Description

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

Scores

EPSS (exploitation in 30 days)

0.22% · top 87% of all CVEs (7 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Affected products

• Linux · Linux

  • affected 59c324683400b41caa6d85b091e812ee3d5415c3 – < e0b518a2eb44d8a74c19e50f79a8ed393e96d634
  • affected 59c324683400b41caa6d85b091e812ee3d5415c3 – < dd55331d493b7ea75c5db1f24d6822946fde2862
  • affected 59c324683400b41caa6d85b091e812ee3d5415c3 – < dbec64b11c65d74f31427e2b9d5746fbf17bf840

• Linux · Linux

  • affected 5.6
  • unaffected < 5.6
  • unaffected 5.10.44 – ≤ 5.10.*
  • unaffected 5.12.11 – ≤ 5.12.*
  • unaffected 5.13 – ≤ *

References (3)

• https://git.kernel.org/stable/c/e0b518a2eb44d8a74c19e50f79a8ed393e96d634 (opens in a new tab)x_transferred
• https://git.kernel.org/stable/c/dd55331d493b7ea75c5db1f24d6822946fde2862 (opens in a new tab)x_transferred
• https://git.kernel.org/stable/c/dbec64b11c65d74f31427e2b9d5746fbf17bf840 (opens in a new tab)x_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2021-47263](https://trackcve.app/badge/CVE-2021-47263.svg)](https://trackcve.app/cve/CVE-2021-47263)

Record last updated 11 May 2026, 13:51 UTC.