{"id":"CVE-2021-47101","state":"PUBLISHED","title":"asix: fix uninit-value in asix_mdio_read()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nasix: fix uninit-value in asix_mdio_read()\n\nasix_read_cmd() may read less than sizeof(smsr) bytes and in this case\nsmsr will be uninitialized.\n\nFail log:\nBUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline]\nBUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497\nBUG: KMSAN: uninit-value in asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497\n asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline]\n asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497\n asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497","publishedAt":"2024-03-04T18:10:54.117Z","updatedAt":"2026-05-11T13:48:05.020Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d9fe64e511144c1ee7d7555b4111f09dde9692ef","status":"affected","lessThan":"d259f621c85949f30cc578cac813b82bb5169f56","versionType":"git"},{"version":"d9fe64e511144c1ee7d7555b4111f09dde9692ef","status":"affected","lessThan":"8035b1a2a37a29d8c717ef84fca8fe7278bc9f03","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/asix_common.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.9","versionType":"semver"},{"version":"5.15.12","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/asix_common.c"]}],"references":["https://git.kernel.org/stable/c/d259f621c85949f30cc578cac813b82bb5169f56","https://git.kernel.org/stable/c/8035b1a2a37a29d8c717ef84fca8fe7278bc9f03"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:19.404Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/47xxx/CVE-2021-47101.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-47101","state":"PUBLISHED","datePublished":"2024-03-04T18:10:54.117Z","dateUpdated":"2026-05-11T13:48:05.020Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-29T22:33:44.301Z"},"containers":{"cna":{"title":"asix: fix uninit-value in asix_mdio_read()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nasix: fix uninit-value in asix_mdio_read()\n\nasix_read_cmd() may read less than sizeof(smsr) bytes and in this case\nsmsr will be uninitialized.\n\nFail log:\nBUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline]\nBUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497\nBUG: KMSAN: uninit-value in asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497\n asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline]\n asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497\n asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d9fe64e511144c1ee7d7555b4111f09dde9692ef","status":"affected","lessThan":"d259f621c85949f30cc578cac813b82bb5169f56","versionType":"git"},{"version":"d9fe64e511144c1ee7d7555b4111f09dde9692ef","status":"affected","lessThan":"8035b1a2a37a29d8c717ef84fca8fe7278bc9f03","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/asix_common.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.9","versionType":"semver"},{"version":"5.15.12","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/asix_common.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d259f621c85949f30cc578cac813b82bb5169f56"},{"url":"https://git.kernel.org/stable/c/8035b1a2a37a29d8c717ef84fca8fe7278bc9f03"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T13:48:05.020Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.15.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.16"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2021-47101","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-03-04T19:39:32.875993Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-07-05T17:21:05.793Z"}},{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/d259f621c85949f30cc578cac813b82bb5169f56","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/8035b1a2a37a29d8c717ef84fca8fe7278bc9f03","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T05:24:39.894Z"}}]}}}