{"id":"CVE-2022-50858","state":"PUBLISHED","title":"mmc: alcor: fix return value check of mmc_add_host()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: alcor: fix return value check of mmc_add_host()\n\nmmc_add_host() may return error, if we ignore its return value, the memory\nthat allocated in mmc_alloc_host() will be leaked and it will lead a kernel\ncrash because of deleting not added device in the remove path.\n\nSo fix this by checking the return value and calling mmc_free_host() in the\nerror path.","publishedAt":"2025-12-30T12:15:32.534Z","updatedAt":"2026-05-11T19:26:29.001Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c5413ad815a675b5c98a002353d8e96b44b164e9","status":"affected","lessThan":"289c964fe182ce755044a6cd57698072e12ffa6f","versionType":"git"},{"version":"c5413ad815a675b5c98a002353d8e96b44b164e9","status":"affected","lessThan":"4a6e5d0222804a3eaf2ea4cf893f412e7cf98cb2","versionType":"git"},{"version":"c5413ad815a675b5c98a002353d8e96b44b164e9","status":"affected","lessThan":"29c5b4da41f35108136d843c7432885c78cf8272","versionType":"git"},{"version":"c5413ad815a675b5c98a002353d8e96b44b164e9","status":"affected","lessThan":"48dc06333d75f41c2ce9ba954bc3231324b45914","versionType":"git"},{"version":"c5413ad815a675b5c98a002353d8e96b44b164e9","status":"affected","lessThan":"60fafcf2fb7ee9a4125dc9a86eeb9d490acf23e2","versionType":"git"},{"version":"c5413ad815a675b5c98a002353d8e96b44b164e9","status":"affected","lessThan":"e93d1468f429475a753d6baa79b853b7ee5ef8c0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mmc/host/alcor.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.0","versionType":"semver"},{"version":"5.4.229","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.86","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.16","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.2","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mmc/host/alcor.c"]}],"references":["https://git.kernel.org/stable/c/289c964fe182ce755044a6cd57698072e12ffa6f","https://git.kernel.org/stable/c/4a6e5d0222804a3eaf2ea4cf893f412e7cf98cb2","https://git.kernel.org/stable/c/29c5b4da41f35108136d843c7432885c78cf8272","https://git.kernel.org/stable/c/48dc06333d75f41c2ce9ba954bc3231324b45914","https://git.kernel.org/stable/c/60fafcf2fb7ee9a4125dc9a86eeb9d490acf23e2","https://git.kernel.org/stable/c/e93d1468f429475a753d6baa79b853b7ee5ef8c0"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50858.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50858","state":"PUBLISHED","datePublished":"2025-12-30T12:15:32.534Z","dateUpdated":"2026-05-11T19:26:29.001Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-30T12:06:07.135Z"},"containers":{"cna":{"title":"mmc: alcor: fix return value check of mmc_add_host()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: alcor: fix return value check of mmc_add_host()\n\nmmc_add_host() may return error, if we ignore its return value, the memory\nthat allocated in mmc_alloc_host() will be leaked and it will lead a kernel\ncrash because of deleting not added device in the remove path.\n\nSo fix this by checking the return value and calling mmc_free_host() in the\nerror path."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c5413ad815a675b5c98a002353d8e96b44b164e9","status":"affected","lessThan":"289c964fe182ce755044a6cd57698072e12ffa6f","versionType":"git"},{"version":"c5413ad815a675b5c98a002353d8e96b44b164e9","status":"affected","lessThan":"4a6e5d0222804a3eaf2ea4cf893f412e7cf98cb2","versionType":"git"},{"version":"c5413ad815a675b5c98a002353d8e96b44b164e9","status":"affected","lessThan":"29c5b4da41f35108136d843c7432885c78cf8272","versionType":"git"},{"version":"c5413ad815a675b5c98a002353d8e96b44b164e9","status":"affected","lessThan":"48dc06333d75f41c2ce9ba954bc3231324b45914","versionType":"git"},{"version":"c5413ad815a675b5c98a002353d8e96b44b164e9","status":"affected","lessThan":"60fafcf2fb7ee9a4125dc9a86eeb9d490acf23e2","versionType":"git"},{"version":"c5413ad815a675b5c98a002353d8e96b44b164e9","status":"affected","lessThan":"e93d1468f429475a753d6baa79b853b7ee5ef8c0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mmc/host/alcor.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.0","versionType":"semver"},{"version":"5.4.229","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.86","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.16","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.2","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mmc/host/alcor.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/289c964fe182ce755044a6cd57698072e12ffa6f"},{"url":"https://git.kernel.org/stable/c/4a6e5d0222804a3eaf2ea4cf893f412e7cf98cb2"},{"url":"https://git.kernel.org/stable/c/29c5b4da41f35108136d843c7432885c78cf8272"},{"url":"https://git.kernel.org/stable/c/48dc06333d75f41c2ce9ba954bc3231324b45914"},{"url":"https://git.kernel.org/stable/c/60fafcf2fb7ee9a4125dc9a86eeb9d490acf23e2"},{"url":"https://git.kernel.org/stable/c/e93d1468f429475a753d6baa79b853b7ee5ef8c0"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:26:29.001Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"5.4.229"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"5.10.163"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"5.15.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.0.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.1.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}