{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-47116","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-03-04T18:12:48.837Z","datePublished":"2024-03-15T20:14:23.564Z","dateUpdated":"2025-12-18T11:35:40.153Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-12-18T11:35:40.153Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix memory leak in ext4_mb_init_backend on error path.\n\nFix a memory leak discovered by syzbot when a file system is corrupted\nwith an illegally large s_log_groups_per_flex."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/mballoc.c"],"versions":[{"version":"df61d3cff422433527d3bc388f69484f0781d226","lessThan":"2050c6e5b161e5e25ce3c420fef58b24fa388a49","status":"affected","versionType":"git"},{"version":"f91436d55a279f045987e8b8c1385585dca54be9","lessThan":"04fb2baa0b147f51db065a1b13a11954abe592d0","status":"affected","versionType":"git"},{"version":"f91436d55a279f045987e8b8c1385585dca54be9","lessThan":"a8867f4e3809050571c98de7a2d465aff5e4daf5","status":"affected","versionType":"git"},{"version":"9e7af67e9521fb5cbb5b01aca22921c313c2e48e","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/mballoc.c"],"versions":[{"version":"5.12","status":"affected"},{"version":"0","lessThan":"5.12","status":"unaffected","versionType":"semver"},{"version":"5.10.43","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.12.10","lessThanOrEqual":"5.12.*","status":"unaffected","versionType":"semver"},{"version":"5.13","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.27","versionEndExcluding":"5.10.43"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.12.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11.11"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/2050c6e5b161e5e25ce3c420fef58b24fa388a49"},{"url":"https://git.kernel.org/stable/c/04fb2baa0b147f51db065a1b13a11954abe592d0"},{"url":"https://git.kernel.org/stable/c/a8867f4e3809050571c98de7a2d465aff5e4daf5"}],"title":"ext4: fix memory leak in ext4_mb_init_backend on error path.","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2021-47116","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-04-05T17:36:29.410225Z"}}}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-06-04T17:13:30.143Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-04T05:24:39.910Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/2050c6e5b161e5e25ce3c420fef58b24fa388a49","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/04fb2baa0b147f51db065a1b13a11954abe592d0","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/a8867f4e3809050571c98de7a2d465aff5e4daf5","tags":["x_transferred"]}]}]}}