{"id":"CVE-2026-98528","state":"PUBLISHED","title":"gpio: cdev: fix kernel stack leak to user-space in error path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: cdev: fix kernel stack leak to user-space in error path\n\nIf we fail to acquire the GPIO chip guard in gpio_desc_to_lineinfo(), we\nreturn immediately before zeroing the info struct we'll end up passing\nto the user-space later in lineinfo_get_v1(). This may leak the kernel\nstack contents. Make gpio_desc_to_lineinfo() return int so that the\n-ENODEV returned on failure to acquire the guard can be propagated to\nthe callers.\n\nWhile not strictly necessary: move the memset() before trying to acquire\nthe SRCU read lock too for good measure.","publishedAt":"2026-10-18T15:17:46.695Z","updatedAt":"2026-10-19T09:21:10.272Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d83cee3d2bb131c7fca7e19f1e33dc7530fd7083","status":"affected","lessThan":"8460ee5216ab9a38263b01dca4b0a27e083f70f3","versionType":"git"},{"version":"d83cee3d2bb131c7fca7e19f1e33dc7530fd7083","status":"affected","lessThan":"cf3d043582e106a0e57002bec8a6de8929ba3e1c","versionType":"git"},{"version":"d83cee3d2bb131c7fca7e19f1e33dc7530fd7083","status":"affected","lessThan":"60a466f231905cd96ae6f0f3c44a710c97873dac","versionType":"git"},{"version":"d83cee3d2bb131c7fca7e19f1e33dc7530fd7083","status":"affected","lessThan":"1feb5d39b05afd902ed9fc902ec5b15be03a4bdb","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpio/gpiolib-cdev.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.9","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpio/gpiolib-cdev.c"]}],"references":["https://git.kernel.org/stable/c/8460ee5216ab9a38263b01dca4b0a27e083f70f3","https://git.kernel.org/stable/c/cf3d043582e106a0e57002bec8a6de8929ba3e1c","https://git.kernel.org/stable/c/60a466f231905cd96ae6f0f3c44a710c97873dac","https://git.kernel.org/stable/c/1feb5d39b05afd902ed9fc902ec5b15be03a4bdb"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98528.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98528","state":"PUBLISHED","datePublished":"2026-10-18T15:17:46.695Z","dateUpdated":"2026-10-19T09:21:10.272Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.355Z"},"containers":{"cna":{"title":"gpio: cdev: fix kernel stack leak to user-space in error path","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: cdev: fix kernel stack leak to user-space in error path\n\nIf we fail to acquire the GPIO chip guard in gpio_desc_to_lineinfo(), we\nreturn immediately before zeroing the info struct we'll end up passing\nto the user-space later in lineinfo_get_v1(). This may leak the kernel\nstack contents. Make gpio_desc_to_lineinfo() return int so that the\n-ENODEV returned on failure to acquire the guard can be propagated to\nthe callers.\n\nWhile not strictly necessary: move the memset() before trying to acquire\nthe SRCU read lock too for good measure."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d83cee3d2bb131c7fca7e19f1e33dc7530fd7083","status":"affected","lessThan":"8460ee5216ab9a38263b01dca4b0a27e083f70f3","versionType":"git"},{"version":"d83cee3d2bb131c7fca7e19f1e33dc7530fd7083","status":"affected","lessThan":"cf3d043582e106a0e57002bec8a6de8929ba3e1c","versionType":"git"},{"version":"d83cee3d2bb131c7fca7e19f1e33dc7530fd7083","status":"affected","lessThan":"60a466f231905cd96ae6f0f3c44a710c97873dac","versionType":"git"},{"version":"d83cee3d2bb131c7fca7e19f1e33dc7530fd7083","status":"affected","lessThan":"1feb5d39b05afd902ed9fc902ec5b15be03a4bdb","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpio/gpiolib-cdev.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.9","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpio/gpiolib-cdev.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8460ee5216ab9a38263b01dca4b0a27e083f70f3"},{"url":"https://git.kernel.org/stable/c/cf3d043582e106a0e57002bec8a6de8929ba3e1c"},{"url":"https://git.kernel.org/stable/c/60a466f231905cd96ae6f0f3c44a710c97873dac"},{"url":"https://git.kernel.org/stable/c/1feb5d39b05afd902ed9fc902ec5b15be03a4bdb"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:21:10.272Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.18.55"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"7.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}