{"id":"CVE-2021-47122","state":"PUBLISHED","title":"net: caif: fix memory leak in caif_device_notify","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: caif: fix memory leak in caif_device_notify\n\nIn case of caif_enroll_dev() fail, allocated\nlink_support won't be assigned to the corresponding\nstructure. So simply free allocated pointer in case\nof error","publishedAt":"2024-03-15T20:14:28.089Z","updatedAt":"2026-05-11T13:48:28.483Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7c18d2205ea76eef9674e59e1ecae4f332a53e9e","status":"affected","lessThan":"b042e2b2039565eb8f0eb51c14fbe1ef463c8cd8","versionType":"git"},{"version":"7c18d2205ea76eef9674e59e1ecae4f332a53e9e","status":"affected","lessThan":"9348c1f10932f13b299cbc8b1bd5f780751fae49","versionType":"git"},{"version":"7c18d2205ea76eef9674e59e1ecae4f332a53e9e","status":"affected","lessThan":"4bca2034b41c15b62d47a19158bb76235fd4455d","versionType":"git"},{"version":"7c18d2205ea76eef9674e59e1ecae4f332a53e9e","status":"affected","lessThan":"3be863c11cab725add9fef4237ed4e232c3fc3bb","versionType":"git"},{"version":"7c18d2205ea76eef9674e59e1ecae4f332a53e9e","status":"affected","lessThan":"f52f4fd67264c70cd0b4ba326962ebe12d9cba94","versionType":"git"},{"version":"7c18d2205ea76eef9674e59e1ecae4f332a53e9e","status":"affected","lessThan":"af2806345a37313f01b1c9f15e046745b8ee2daa","versionType":"git"},{"version":"7c18d2205ea76eef9674e59e1ecae4f332a53e9e","status":"affected","lessThan":"6a0e317f61094d377335547e015dd2ff12caf893","versionType":"git"},{"version":"7c18d2205ea76eef9674e59e1ecae4f332a53e9e","status":"affected","lessThan":"b53558a950a89824938e9811eddfc8efcd94e1bb","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/caif/caif_dev.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.3","versionType":"semver"},{"version":"4.4.272","status":"unaffected","lessThanOrEqual":"4.4.*","versionType":"semver"},{"version":"4.9.272","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.236","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.194","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.125","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.43","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.12.10","status":"unaffected","lessThanOrEqual":"5.12.*","versionType":"semver"},{"version":"5.13","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/caif/caif_dev.c"]}],"references":["https://git.kernel.org/stable/c/b042e2b2039565eb8f0eb51c14fbe1ef463c8cd8","https://git.kernel.org/stable/c/9348c1f10932f13b299cbc8b1bd5f780751fae49","https://git.kernel.org/stable/c/4bca2034b41c15b62d47a19158bb76235fd4455d","https://git.kernel.org/stable/c/3be863c11cab725add9fef4237ed4e232c3fc3bb","https://git.kernel.org/stable/c/f52f4fd67264c70cd0b4ba326962ebe12d9cba94","https://git.kernel.org/stable/c/af2806345a37313f01b1c9f15e046745b8ee2daa","https://git.kernel.org/stable/c/6a0e317f61094d377335547e015dd2ff12caf893","https://git.kernel.org/stable/c/b53558a950a89824938e9811eddfc8efcd94e1bb"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:19.404Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/47xxx/CVE-2021-47122.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-47122","state":"PUBLISHED","datePublished":"2024-03-15T20:14:28.089Z","dateUpdated":"2026-05-11T13:48:28.483Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-03-04T18:12:48.838Z"},"containers":{"cna":{"title":"net: caif: fix memory leak in caif_device_notify","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: caif: fix memory leak in caif_device_notify\n\nIn case of caif_enroll_dev() fail, allocated\nlink_support won't be assigned to the corresponding\nstructure. So simply free allocated pointer in case\nof error"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7c18d2205ea76eef9674e59e1ecae4f332a53e9e","status":"affected","lessThan":"b042e2b2039565eb8f0eb51c14fbe1ef463c8cd8","versionType":"git"},{"version":"7c18d2205ea76eef9674e59e1ecae4f332a53e9e","status":"affected","lessThan":"9348c1f10932f13b299cbc8b1bd5f780751fae49","versionType":"git"},{"version":"7c18d2205ea76eef9674e59e1ecae4f332a53e9e","status":"affected","lessThan":"4bca2034b41c15b62d47a19158bb76235fd4455d","versionType":"git"},{"version":"7c18d2205ea76eef9674e59e1ecae4f332a53e9e","status":"affected","lessThan":"3be863c11cab725add9fef4237ed4e232c3fc3bb","versionType":"git"},{"version":"7c18d2205ea76eef9674e59e1ecae4f332a53e9e","status":"affected","lessThan":"f52f4fd67264c70cd0b4ba326962ebe12d9cba94","versionType":"git"},{"version":"7c18d2205ea76eef9674e59e1ecae4f332a53e9e","status":"affected","lessThan":"af2806345a37313f01b1c9f15e046745b8ee2daa","versionType":"git"},{"version":"7c18d2205ea76eef9674e59e1ecae4f332a53e9e","status":"affected","lessThan":"6a0e317f61094d377335547e015dd2ff12caf893","versionType":"git"},{"version":"7c18d2205ea76eef9674e59e1ecae4f332a53e9e","status":"affected","lessThan":"b53558a950a89824938e9811eddfc8efcd94e1bb","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/caif/caif_dev.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.3","versionType":"semver"},{"version":"4.4.272","status":"unaffected","lessThanOrEqual":"4.4.*","versionType":"semver"},{"version":"4.9.272","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.236","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.194","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.125","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.43","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.12.10","status":"unaffected","lessThanOrEqual":"5.12.*","versionType":"semver"},{"version":"5.13","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/caif/caif_dev.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/b042e2b2039565eb8f0eb51c14fbe1ef463c8cd8"},{"url":"https://git.kernel.org/stable/c/9348c1f10932f13b299cbc8b1bd5f780751fae49"},{"url":"https://git.kernel.org/stable/c/4bca2034b41c15b62d47a19158bb76235fd4455d"},{"url":"https://git.kernel.org/stable/c/3be863c11cab725add9fef4237ed4e232c3fc3bb"},{"url":"https://git.kernel.org/stable/c/f52f4fd67264c70cd0b4ba326962ebe12d9cba94"},{"url":"https://git.kernel.org/stable/c/af2806345a37313f01b1c9f15e046745b8ee2daa"},{"url":"https://git.kernel.org/stable/c/6a0e317f61094d377335547e015dd2ff12caf893"},{"url":"https://git.kernel.org/stable/c/b53558a950a89824938e9811eddfc8efcd94e1bb"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T13:48:28.483Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"4.4.272"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"4.9.272"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"4.14.236"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"4.19.194"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"5.4.125"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"5.10.43"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"5.12.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"5.13"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-06-21T16:10:05.257169Z","id":"CVE-2021-47122","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-06-21T16:10:13.492Z"}},{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/b042e2b2039565eb8f0eb51c14fbe1ef463c8cd8","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/9348c1f10932f13b299cbc8b1bd5f780751fae49","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/4bca2034b41c15b62d47a19158bb76235fd4455d","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/3be863c11cab725add9fef4237ed4e232c3fc3bb","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/f52f4fd67264c70cd0b4ba326962ebe12d9cba94","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/af2806345a37313f01b1c9f15e046745b8ee2daa","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/6a0e317f61094d377335547e015dd2ff12caf893","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/b53558a950a89824938e9811eddfc8efcd94e1bb","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T05:24:39.852Z"}}]}}}