{"id":"CVE-2026-99257","title":"gpio: shared: gracefully handle no-device lookup of shared GPIOs","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: shared: gracefully handle no-device lookup of shared GPIOs\n\nWe use platform lookup tables for shared GPIOs. This mechanism needs a\nstruct device to work so fwnode…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= a060b8c511abb0997381b397e52149a5e3e5259a < 7f9eb6aaf9a3ab7fa2b7dcc38660c27db12d4ec1","Linux >= a060b8c511abb0997381b397e52149a5e3e5259a < cf73c3fc03c43a8a86fd487c62390b4744eff9ec","Linux 6.19"],"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T11:40:45.753Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-99257","references":[{"url":"https://git.kernel.org/stable/c/7f9eb6aaf9a3ab7fa2b7dcc38660c27db12d4ec1"},{"url":"https://git.kernel.org/stable/c/cf73c3fc03c43a8a86fd487c62390b4744eff9ec"}],"tags":["cve.org"],"epss":0.00177,"epssPercentile":0.07362,"ingestedAt":"2026-11-05T19:30:42.938Z","slug":"CVE-2026-99257","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ngpio: shared: gracefully handle no-device lookup of shared GPIOs\n\nWe use platform lookup tables for shared GPIOs. This mechanism needs a\nstruct device to work so fwnode-based lookup with no device associated\ncurrently causes a NULL-pointer deference.\n\nAdding this functionality will require a larger rework and it has never\nworked anyway so add a check that allows the kernel to gracefully handle\nthis situation with an error ahead of implementing that functionality as\na new feature.\n\n## Affected\n\n- `Linux >= a060b8c511abb0997381b397e52149a5e3e5259a < 7f9eb6aaf9a3ab7fa2b7dcc38660c27db12d4ec1`\n- `Linux >= a060b8c511abb0997381b397e52149a5e3e5259a < cf73c3fc03c43a8a86fd487c62390b4744eff9ec`\n- `Linux 6.19`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}