{"id":"CVE-2021-47442","state":"PUBLISHED","title":"NFC: digital: fix possible memory leak in digital_in_send_sdd_req()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nNFC: digital: fix possible memory leak in digital_in_send_sdd_req()\n\n'skb' is allocated in digital_in_send_sdd_req(), but not free when\ndigital_in_send_cmd() failed, which will cause memory leak. Fix it\nby freeing 'skb' if digital_in_send_cmd() return failed.","publishedAt":"2024-05-22T06:19:36.228Z","updatedAt":"2026-05-11T13:54:47.112Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2c66daecc4092e6049673c281b2e6f0d5e59a94c","status":"affected","lessThan":"74569c78aa84f8c958f1334b465bc530906ec99a","versionType":"git"},{"version":"2c66daecc4092e6049673c281b2e6f0d5e59a94c","status":"affected","lessThan":"88c890b0b9a1fb9fcd01c61ada515e8b636c34f9","versionType":"git"},{"version":"2c66daecc4092e6049673c281b2e6f0d5e59a94c","status":"affected","lessThan":"fcce6e5255474ca33c27dda0cdf9bf5087278873","versionType":"git"},{"version":"2c66daecc4092e6049673c281b2e6f0d5e59a94c","status":"affected","lessThan":"071bdef36391958c89af5fa2172f691b31baa212","versionType":"git"},{"version":"2c66daecc4092e6049673c281b2e6f0d5e59a94c","status":"affected","lessThan":"2bde4aca56db9fe25405d39ddb062531493a65db","versionType":"git"},{"version":"2c66daecc4092e6049673c281b2e6f0d5e59a94c","status":"affected","lessThan":"50cb95487c265187289810addec5093d4fed8329","versionType":"git"},{"version":"2c66daecc4092e6049673c281b2e6f0d5e59a94c","status":"affected","lessThan":"6432d7f1d1c3aa74cfe8f5e3afdf81b786c32e86","versionType":"git"},{"version":"2c66daecc4092e6049673c281b2e6f0d5e59a94c","status":"affected","lessThan":"291c932fc3692e4d211a445ba8aa35663831bac7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/nfc/digital_technology.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.13","versionType":"semver"},{"version":"4.4.290","status":"unaffected","lessThanOrEqual":"4.4.*","versionType":"semver"},{"version":"4.9.288","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.252","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.213","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.155","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.75","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.14.14","status":"unaffected","lessThanOrEqual":"5.14.*","versionType":"semver"},{"version":"5.15","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/nfc/digital_technology.c"]}],"references":["https://git.kernel.org/stable/c/74569c78aa84f8c958f1334b465bc530906ec99a","https://git.kernel.org/stable/c/88c890b0b9a1fb9fcd01c61ada515e8b636c34f9","https://git.kernel.org/stable/c/fcce6e5255474ca33c27dda0cdf9bf5087278873","https://git.kernel.org/stable/c/071bdef36391958c89af5fa2172f691b31baa212","https://git.kernel.org/stable/c/2bde4aca56db9fe25405d39ddb062531493a65db","https://git.kernel.org/stable/c/50cb95487c265187289810addec5093d4fed8329","https://git.kernel.org/stable/c/6432d7f1d1c3aa74cfe8f5e3afdf81b786c32e86","https://git.kernel.org/stable/c/291c932fc3692e4d211a445ba8aa35663831bac7"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:19.404Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/47xxx/CVE-2021-47442.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-47442","state":"PUBLISHED","datePublished":"2024-05-22T06:19:36.228Z","dateUpdated":"2026-05-11T13:54:47.112Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-05-21T14:58:30.831Z"},"containers":{"cna":{"title":"NFC: digital: fix possible memory leak in digital_in_send_sdd_req()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nNFC: digital: fix possible memory leak in digital_in_send_sdd_req()\n\n'skb' is allocated in digital_in_send_sdd_req(), but not free when\ndigital_in_send_cmd() failed, which will cause memory leak. 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