{"id":"CVE-2021-47332","state":"PUBLISHED","title":"ALSA: usx2y: Don't call free_pages_exact() with NULL address","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usx2y: Don't call free_pages_exact() with NULL address\n\nUnlike some other functions, we can't pass NULL pointer to\nfree_pages_exact().  Add a proper NULL check for avoiding possible\nOops.","publishedAt":"2024-05-21T14:35:43.078Z","updatedAt":"2026-05-11T13:52:30.292Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"36b8defc447627c3e91058c43941ec15d827556e","status":"affected","lessThan":"88262229b778f4f7a896da828d966f94dcb35d19","versionType":"git"},{"version":"36b8defc447627c3e91058c43941ec15d827556e","status":"affected","lessThan":"7d7f30cf182e55023fa8fde4c084b2d37c6be69d","versionType":"git"},{"version":"36b8defc447627c3e91058c43941ec15d827556e","status":"affected","lessThan":"bee295f5e03510252d18b25cc1d26230256eb87a","versionType":"git"},{"version":"36b8defc447627c3e91058c43941ec15d827556e","status":"affected","lessThan":"82e5ee742fdd8874fe996181b87fafe1eb5f1196","versionType":"git"},{"version":"36b8defc447627c3e91058c43941ec15d827556e","status":"affected","lessThan":"cae0cf651adccee2c3f376e78f30fbd788d0829f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/usx2y/usb_stream.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.2","versionType":"semver"},{"version":"5.4.134","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.52","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.12.19","status":"unaffected","lessThanOrEqual":"5.12.*","versionType":"semver"},{"version":"5.13.4","status":"unaffected","lessThanOrEqual":"5.13.*","versionType":"semver"},{"version":"5.14","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/usx2y/usb_stream.c"]}],"references":["https://git.kernel.org/stable/c/88262229b778f4f7a896da828d966f94dcb35d19","https://git.kernel.org/stable/c/7d7f30cf182e55023fa8fde4c084b2d37c6be69d","https://git.kernel.org/stable/c/bee295f5e03510252d18b25cc1d26230256eb87a","https://git.kernel.org/stable/c/82e5ee742fdd8874fe996181b87fafe1eb5f1196","https://git.kernel.org/stable/c/cae0cf651adccee2c3f376e78f30fbd788d0829f"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:19.404Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/47xxx/CVE-2021-47332.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-47332","state":"PUBLISHED","datePublished":"2024-05-21T14:35:43.078Z","dateUpdated":"2026-05-11T13:52:30.292Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-05-21T14:28:16.975Z"},"containers":{"cna":{"title":"ALSA: usx2y: Don't call free_pages_exact() with NULL address","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usx2y: Don't call free_pages_exact() with NULL address\n\nUnlike some other functions, we can't pass NULL pointer to\nfree_pages_exact().  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