{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50766","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-12-24T13:02:21.546Z","datePublished":"2025-12-24T13:05:56.873Z","dateUpdated":"2026-05-11T19:25:07.774Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:25:07.774Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: set generation before calling btrfs_clean_tree_block in btrfs_init_new_buffer\n\nsyzbot is reporting uninit-value in btrfs_clean_tree_block() [1], for\ncommit bc877d285ca3dba2 (\"btrfs: Deduplicate extent_buffer init code\")\nmissed that btrfs_set_header_generation() in btrfs_init_new_buffer() must\nnot be moved to after clean_tree_block() because clean_tree_block() is\ncalling btrfs_header_generation() since commit 55c69072d6bd5be1 (\"Btrfs:\nFix extent_buffer usage when nodesize != leafsize\").\n\nSince memzero_extent_buffer() will reset \"struct btrfs_header\" part, we\ncan't move btrfs_set_header_generation() to before memzero_extent_buffer().\nJust re-add btrfs_set_header_generation() before btrfs_clean_tree_block()."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/btrfs/extent-tree.c"],"versions":[{"version":"bc877d285ca3dba24c52406946a4a69847cc7422","lessThan":"0a408c6212c16b9a2a1141d3c531247582ef8101","status":"affected","versionType":"git"},{"version":"bc877d285ca3dba24c52406946a4a69847cc7422","lessThan":"a687c2890fe4a2acaac6941fa4097a1264d8f3eb","status":"affected","versionType":"git"},{"version":"bc877d285ca3dba24c52406946a4a69847cc7422","lessThan":"89bc41c92d10b905c60f6ec13c9ef664a3555c54","status":"affected","versionType":"git"},{"version":"bc877d285ca3dba24c52406946a4a69847cc7422","lessThan":"cbddcc4fa3443fe8cfb2ff8e210deb1f6a0eea38","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/btrfs/extent-tree.c"],"versions":[{"version":"4.19","status":"affected"},{"version":"0","lessThan":"4.19","status":"unaffected","versionType":"semver"},{"version":"5.15.75","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.19.17","lessThanOrEqual":"5.19.*","status":"unaffected","versionType":"semver"},{"version":"6.0.3","lessThanOrEqual":"6.0.*","status":"unaffected","versionType":"semver"},{"version":"6.1","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":"4.19","versionEndExcluding":"5.15.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.19.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.0.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0a408c6212c16b9a2a1141d3c531247582ef8101"},{"url":"https://git.kernel.org/stable/c/a687c2890fe4a2acaac6941fa4097a1264d8f3eb"},{"url":"https://git.kernel.org/stable/c/89bc41c92d10b905c60f6ec13c9ef664a3555c54"},{"url":"https://git.kernel.org/stable/c/cbddcc4fa3443fe8cfb2ff8e210deb1f6a0eea38"}],"title":"btrfs: set generation before calling btrfs_clean_tree_block in btrfs_init_new_buffer","x_generator":{"engine":"bippy-1.2.0"}}}}