{"id":"CVE-2026-64001","state":"PUBLISHED","title":"ALSA: pcm: oss: Fix setup list UAF on proc write error","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: pcm: oss: Fix setup list UAF on proc write error\n\nsnd_pcm_oss_proc_write() links a newly allocated setup entry into the\nOSS setup list before duplicating the task name. If the task-name\nallocation fails, the error path frees the already linked entry and\nleaves setup_list pointing at freed memory.\n\nA later OSS device open can then walk the stale list entry in\nsnd_pcm_oss_look_for_setup() and dereference freed memory.\n\nAllocate the task name and initialize the setup entry before publishing\nthe entry on setup_list. Also fetch the initial proc read iterator only\nafter taking setup_mutex, so all setup_list traversal follows the same\nlist lifetime rules.","publishedAt":"2026-07-19T14:56:18.816Z","updatedAt":"2026-10-21T12:42:53.657Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"060d77b9c04acd7aef60790398a53f731db8c8fe","status":"affected","lessThan":"d9df965284abde27ba6bfbdfc8407697cf6802f1","versionType":"git"},{"version":"060d77b9c04acd7aef60790398a53f731db8c8fe","status":"affected","lessThan":"8be4efd0dc0093eb7a02ad1aac936bca2a1f04ce","versionType":"git"},{"version":"060d77b9c04acd7aef60790398a53f731db8c8fe","status":"affected","lessThan":"e13922bb97b4e6f94f8ac02d034f2d4bd65eeb3c","versionType":"git"},{"version":"060d77b9c04acd7aef60790398a53f731db8c8fe","status":"affected","lessThan":"be387230dc22d870afd0e5d35912b07c2bc323bd","versionType":"git"},{"version":"060d77b9c04acd7aef60790398a53f731db8c8fe","status":"affected","lessThan":"4cc54bdd54b337e77115be5b55577d1c58608eae","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/core/oss/pcm_oss.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.17","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.93","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.35","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.12","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/core/oss/pcm_oss.c"]}],"references":["https://git.kernel.org/stable/c/d9df965284abde27ba6bfbdfc8407697cf6802f1","https://git.kernel.org/stable/c/8be4efd0dc0093eb7a02ad1aac936bca2a1f04ce","https://git.kernel.org/stable/c/e13922bb97b4e6f94f8ac02d034f2d4bd65eeb3c","https://git.kernel.org/stable/c/be387230dc22d870afd0e5d35912b07c2bc323bd","https://git.kernel.org/stable/c/4cc54bdd54b337e77115be5b55577d1c58608eae"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/64xxx/CVE-2026-64001.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64001","state":"PUBLISHED","datePublished":"2026-07-19T14:56:18.816Z","dateUpdated":"2026-10-21T12:42:53.657Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T07:54:57.026Z"},"containers":{"cna":{"title":"ALSA: pcm: oss: Fix setup list UAF on proc write error","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: pcm: oss: Fix setup list UAF on proc write error\n\nsnd_pcm_oss_proc_write() links a newly allocated setup entry into the\nOSS setup list before duplicating the task name. If the task-name\nallocation fails, the error path frees the already linked entry and\nleaves setup_list pointing at freed memory.\n\nA later OSS device open can then walk the stale list entry in\nsnd_pcm_oss_look_for_setup() and dereference freed memory.\n\nAllocate the task name and initialize the setup entry before publishing\nthe entry on setup_list. Also fetch the initial proc read iterator only\nafter taking setup_mutex, so all setup_list traversal follows the same\nlist lifetime rules."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"060d77b9c04acd7aef60790398a53f731db8c8fe","status":"affected","lessThan":"d9df965284abde27ba6bfbdfc8407697cf6802f1","versionType":"git"},{"version":"060d77b9c04acd7aef60790398a53f731db8c8fe","status":"affected","lessThan":"8be4efd0dc0093eb7a02ad1aac936bca2a1f04ce","versionType":"git"},{"version":"060d77b9c04acd7aef60790398a53f731db8c8fe","status":"affected","lessThan":"e13922bb97b4e6f94f8ac02d034f2d4bd65eeb3c","versionType":"git"},{"version":"060d77b9c04acd7aef60790398a53f731db8c8fe","status":"affected","lessThan":"be387230dc22d870afd0e5d35912b07c2bc323bd","versionType":"git"},{"version":"060d77b9c04acd7aef60790398a53f731db8c8fe","status":"affected","lessThan":"4cc54bdd54b337e77115be5b55577d1c58608eae","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/core/oss/pcm_oss.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.17","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.93","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.35","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.12","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/core/oss/pcm_oss.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d9df965284abde27ba6bfbdfc8407697cf6802f1"},{"url":"https://git.kernel.org/stable/c/8be4efd0dc0093eb7a02ad1aac936bca2a1f04ce"},{"url":"https://git.kernel.org/stable/c/e13922bb97b4e6f94f8ac02d034f2d4bd65eeb3c"},{"url":"https://git.kernel.org/stable/c/be387230dc22d870afd0e5d35912b07c2bc323bd"},{"url":"https://git.kernel.org/stable/c/4cc54bdd54b337e77115be5b55577d1c58608eae"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-21T12:42:53.657Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.17","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.17","versionEndExcluding":"6.12.93"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.17","versionEndExcluding":"6.18.35"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.17","versionEndExcluding":"7.0.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.17","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}