{"id":"CVE-2026-93215","state":"PUBLISHED","title":"cdx: Fix double free when sysfs file creation fails","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncdx: Fix double free when sysfs file creation fails\n\nIn cdx_create_res_attr(), if sysfs_create_bin_file() fails, the code\nfrees res_attr but doesn't set cdx_dev->res_attr[num] to NULL. This\nleaves a dangling pointer in the array. Then cdx_destroy_res_attr()\nfrees the already-freed memory. Fix the double free by initializing\ncdx_dev->res_attr[num] after sysfs_create_bin_file() completes.","publishedAt":"2026-09-24T15:10:37.863Z","updatedAt":"2026-10-19T09:07:27.148Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"aeda33ab8160c7a2e24ba4f44492ad1e974ddc7d","status":"affected","lessThan":"88f4cd42a04bdadd189d7f667a4c279f4e962ca6","versionType":"git"},{"version":"aeda33ab8160c7a2e24ba4f44492ad1e974ddc7d","status":"affected","lessThan":"4cd24873ab9fdbd730604881a6e8087bc7b99336","versionType":"git"},{"version":"aeda33ab8160c7a2e24ba4f44492ad1e974ddc7d","status":"affected","lessThan":"7e9451bf0bdba6daee1eaf4e7566612af6ca1c32","versionType":"git"},{"version":"aeda33ab8160c7a2e24ba4f44492ad1e974ddc7d","status":"affected","lessThan":"6f4acc3a3c300e174e3f586b97b04ed8f5948c36","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/cdx/cdx.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.8","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","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/cdx/cdx.c"]}],"references":["https://git.kernel.org/stable/c/88f4cd42a04bdadd189d7f667a4c279f4e962ca6","https://git.kernel.org/stable/c/4cd24873ab9fdbd730604881a6e8087bc7b99336","https://git.kernel.org/stable/c/7e9451bf0bdba6daee1eaf4e7566612af6ca1c32","https://git.kernel.org/stable/c/6f4acc3a3c300e174e3f586b97b04ed8f5948c36"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93215.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93215","state":"PUBLISHED","datePublished":"2026-09-24T15:10:37.863Z","dateUpdated":"2026-10-19T09:07:27.148Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-17T16:02:15.093Z"},"containers":{"cna":{"title":"cdx: Fix double free when sysfs file creation fails","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncdx: Fix double free when sysfs file creation fails\n\nIn cdx_create_res_attr(), if sysfs_create_bin_file() fails, the code\nfrees res_attr but doesn't set cdx_dev->res_attr[num] to NULL. This\nleaves a dangling pointer in the array. Then cdx_destroy_res_attr()\nfrees the already-freed memory. Fix the double free by initializing\ncdx_dev->res_attr[num] after sysfs_create_bin_file() completes."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"aeda33ab8160c7a2e24ba4f44492ad1e974ddc7d","status":"affected","lessThan":"88f4cd42a04bdadd189d7f667a4c279f4e962ca6","versionType":"git"},{"version":"aeda33ab8160c7a2e24ba4f44492ad1e974ddc7d","status":"affected","lessThan":"4cd24873ab9fdbd730604881a6e8087bc7b99336","versionType":"git"},{"version":"aeda33ab8160c7a2e24ba4f44492ad1e974ddc7d","status":"affected","lessThan":"7e9451bf0bdba6daee1eaf4e7566612af6ca1c32","versionType":"git"},{"version":"aeda33ab8160c7a2e24ba4f44492ad1e974ddc7d","status":"affected","lessThan":"6f4acc3a3c300e174e3f586b97b04ed8f5948c36","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/cdx/cdx.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.8","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","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/cdx/cdx.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/88f4cd42a04bdadd189d7f667a4c279f4e962ca6"},{"url":"https://git.kernel.org/stable/c/4cd24873ab9fdbd730604881a6e8087bc7b99336"},{"url":"https://git.kernel.org/stable/c/7e9451bf0bdba6daee1eaf4e7566612af6ca1c32"},{"url":"https://git.kernel.org/stable/c/6f4acc3a3c300e174e3f586b97b04ed8f5948c36"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:07:27.148Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.12.109"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}