{"id":"CVE-2021-47263","state":"PUBLISHED","title":"gpio: wcd934x: Fix shift-out-of-bounds error","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: wcd934x: Fix shift-out-of-bounds error\n\nbit-mask for pins 0 to 4 is BIT(0) to BIT(4) however we ended up with BIT(n - 1)\nwhich is not right, and this was caught by below usban check\n\nUBSAN: shift-out-of-bounds in drivers/gpio/gpio-wcd934x.c:34:14","publishedAt":"2024-05-21T14:19:55.318Z","updatedAt":"2026-05-11T13:51:07.490Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"59c324683400b41caa6d85b091e812ee3d5415c3","status":"affected","lessThan":"e0b518a2eb44d8a74c19e50f79a8ed393e96d634","versionType":"git"},{"version":"59c324683400b41caa6d85b091e812ee3d5415c3","status":"affected","lessThan":"dd55331d493b7ea75c5db1f24d6822946fde2862","versionType":"git"},{"version":"59c324683400b41caa6d85b091e812ee3d5415c3","status":"affected","lessThan":"dbec64b11c65d74f31427e2b9d5746fbf17bf840","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpio/gpio-wcd934x.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.6","versionType":"semver"},{"version":"5.10.44","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.12.11","status":"unaffected","lessThanOrEqual":"5.12.*","versionType":"semver"},{"version":"5.13","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpio/gpio-wcd934x.c"]}],"references":["https://git.kernel.org/stable/c/e0b518a2eb44d8a74c19e50f79a8ed393e96d634","https://git.kernel.org/stable/c/dd55331d493b7ea75c5db1f24d6822946fde2862","https://git.kernel.org/stable/c/dbec64b11c65d74f31427e2b9d5746fbf17bf840"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:19.404Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/47xxx/CVE-2021-47263.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-47263","state":"PUBLISHED","datePublished":"2024-05-21T14:19:55.318Z","dateUpdated":"2026-05-11T13:51:07.490Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-05-21T13:27:52.126Z"},"containers":{"cna":{"title":"gpio: wcd934x: Fix shift-out-of-bounds error","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: wcd934x: Fix shift-out-of-bounds error\n\nbit-mask for pins 0 to 4 is BIT(0) to BIT(4) however we ended up with BIT(n - 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