{"api_version":"1","generated_at":"2026-05-13T02:10:59+00:00","cve":"CVE-2026-43349","urls":{"html":"https://cve.report/CVE-2026-43349","api":"https://cve.report/api/cve/CVE-2026-43349.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43349","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43349"},"summary":{"title":"f2fs: fix to avoid uninit-value access in f2fs_sanity_check_node_footer","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid uninit-value access in f2fs_sanity_check_node_footer\n\nsyzbot reported a f2fs bug as below:\n\nBUG: KMSAN: uninit-value in f2fs_sanity_check_node_footer+0x374/0xa20 fs/f2fs/node.c:1520\n f2fs_sanity_check_node_footer+0x374/0xa20 fs/f2fs/node.c:1520\n f2fs_finish_read_bio+0xe1e/0x1d60 fs/f2fs/data.c:177\n f2fs_read_end_io+0x6ab/0x2220 fs/f2fs/data.c:-1\n bio_endio+0x1006/0x1160 block/bio.c:1792\n submit_bio_noacct+0x533/0x2960 block/blk-core.c:891\n submit_bio+0x57a/0x620 block/blk-core.c:926\n blk_crypto_submit_bio include/linux/blk-crypto.h:203 [inline]\n f2fs_submit_read_bio+0x12c/0x360 fs/f2fs/data.c:557\n f2fs_submit_page_bio+0xee2/0x1450 fs/f2fs/data.c:775\n read_node_folio+0x384/0x4b0 fs/f2fs/node.c:1481\n __get_node_folio+0x5db/0x15d0 fs/f2fs/node.c:1576\n f2fs_get_inode_folio+0x40/0x50 fs/f2fs/node.c:1623\n do_read_inode fs/f2fs/inode.c:425 [inline]\n f2fs_iget+0x1209/0x9380 fs/f2fs/inode.c:596\n f2fs_fill_super+0x8f5a/0xb2e0 fs/f2fs/super.c:5184\n get_tree_bdev_flags+0x6e6/0x920 fs/super.c:1694\n get_tree_bdev+0x38/0x50 fs/super.c:1717\n f2fs_get_tree+0x35/0x40 fs/f2fs/super.c:5436\n vfs_get_tree+0xb3/0x5d0 fs/super.c:1754\n fc_mount fs/namespace.c:1193 [inline]\n do_new_mount_fc fs/namespace.c:3763 [inline]\n do_new_mount+0x885/0x1dd0 fs/namespace.c:3839\n path_mount+0x7a2/0x20b0 fs/namespace.c:4159\n do_mount fs/namespace.c:4172 [inline]\n __do_sys_mount fs/namespace.c:4361 [inline]\n __se_sys_mount+0x704/0x7f0 fs/namespace.c:4338\n __x64_sys_mount+0xe4/0x150 fs/namespace.c:4338\n x64_sys_call+0x39f0/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:166\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nThe root cause is: in f2fs_finish_read_bio(), we may access uninit data\nin folio if we failed to read the data from device into folio, let's add\na check condition to avoid such issue.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-08 14:16:44","updated_at":"2026-05-12 14:10:27"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/a10b89343d41ceee1af0ec38d3a74e526c77fa09","name":"https://git.kernel.org/stable/c/a10b89343d41ceee1af0ec38d3a74e526c77fa09","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7b9161a605e91d0987e2596a245dc1f21621b23f","name":"https://git.kernel.org/stable/c/7b9161a605e91d0987e2596a245dc1f21621b23f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/59970b2586fef4b13e96527b9d232bed30b640cd","name":"https://git.kernel.org/stable/c/59970b2586fef4b13e96527b9d232bed30b640cd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43349","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43349","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 855c54f1803e3ebc613677b4f389c7f92656a1fc 59970b2586fef4b13e96527b9d232bed30b640cd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 50ac3ecd8e05b6bcc350c71a4307d40c030ec7e4 a10b89343d41ceee1af0ec38d3a74e526c77fa09 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 50ac3ecd8e05b6bcc350c71a4307d40c030ec7e4 7b9161a605e91d0987e2596a245dc1f21621b23f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c386753db52b3a80afa6612bfdcb925aa5ca260f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7.0","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.25 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.2 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"43349","cve":"CVE-2026-43349","epss":"0.000170000","percentile":"0.041320000","score_date":"2026-05-12","updated_at":"2026-05-13 00:11:53"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/f2fs/data.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"59970b2586fef4b13e96527b9d232bed30b640cd","status":"affected","version":"855c54f1803e3ebc613677b4f389c7f92656a1fc","versionType":"git"},{"lessThan":"a10b89343d41ceee1af0ec38d3a74e526c77fa09","status":"affected","version":"50ac3ecd8e05b6bcc350c71a4307d40c030ec7e4","versionType":"git"},{"lessThan":"7b9161a605e91d0987e2596a245dc1f21621b23f","status":"affected","version":"50ac3ecd8e05b6bcc350c71a4307d40c030ec7e4","versionType":"git"},{"status":"affected","version":"c386753db52b3a80afa6612bfdcb925aa5ca260f","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/f2fs/data.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"7.0"},{"lessThan":"7.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.25","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.2","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.25","versionStartIncluding":"6.18.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.2","versionStartIncluding":"7.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc1","versionStartIncluding":"7.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19.3","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid uninit-value access in f2fs_sanity_check_node_footer\n\nsyzbot reported a f2fs bug as below:\n\nBUG: KMSAN: uninit-value in f2fs_sanity_check_node_footer+0x374/0xa20 fs/f2fs/node.c:1520\n f2fs_sanity_check_node_footer+0x374/0xa20 fs/f2fs/node.c:1520\n f2fs_finish_read_bio+0xe1e/0x1d60 fs/f2fs/data.c:177\n f2fs_read_end_io+0x6ab/0x2220 fs/f2fs/data.c:-1\n bio_endio+0x1006/0x1160 block/bio.c:1792\n submit_bio_noacct+0x533/0x2960 block/blk-core.c:891\n submit_bio+0x57a/0x620 block/blk-core.c:926\n blk_crypto_submit_bio include/linux/blk-crypto.h:203 [inline]\n f2fs_submit_read_bio+0x12c/0x360 fs/f2fs/data.c:557\n f2fs_submit_page_bio+0xee2/0x1450 fs/f2fs/data.c:775\n read_node_folio+0x384/0x4b0 fs/f2fs/node.c:1481\n __get_node_folio+0x5db/0x15d0 fs/f2fs/node.c:1576\n f2fs_get_inode_folio+0x40/0x50 fs/f2fs/node.c:1623\n do_read_inode fs/f2fs/inode.c:425 [inline]\n f2fs_iget+0x1209/0x9380 fs/f2fs/inode.c:596\n f2fs_fill_super+0x8f5a/0xb2e0 fs/f2fs/super.c:5184\n get_tree_bdev_flags+0x6e6/0x920 fs/super.c:1694\n get_tree_bdev+0x38/0x50 fs/super.c:1717\n f2fs_get_tree+0x35/0x40 fs/f2fs/super.c:5436\n vfs_get_tree+0xb3/0x5d0 fs/super.c:1754\n fc_mount fs/namespace.c:1193 [inline]\n do_new_mount_fc fs/namespace.c:3763 [inline]\n do_new_mount+0x885/0x1dd0 fs/namespace.c:3839\n path_mount+0x7a2/0x20b0 fs/namespace.c:4159\n do_mount fs/namespace.c:4172 [inline]\n __do_sys_mount fs/namespace.c:4361 [inline]\n __se_sys_mount+0x704/0x7f0 fs/namespace.c:4338\n __x64_sys_mount+0xe4/0x150 fs/namespace.c:4338\n x64_sys_call+0x39f0/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:166\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nThe root cause is: in f2fs_finish_read_bio(), we may access uninit data\nin folio if we failed to read the data from device into folio, let's add\na check condition to avoid such issue."}],"providerMetadata":{"dateUpdated":"2026-05-11T22:22:51.282Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/59970b2586fef4b13e96527b9d232bed30b640cd"},{"url":"https://git.kernel.org/stable/c/a10b89343d41ceee1af0ec38d3a74e526c77fa09"},{"url":"https://git.kernel.org/stable/c/7b9161a605e91d0987e2596a245dc1f21621b23f"}],"title":"f2fs: fix to avoid uninit-value access in f2fs_sanity_check_node_footer","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43349","datePublished":"2026-05-08T13:41:52.611Z","dateReserved":"2026-05-01T14:12:56.003Z","dateUpdated":"2026-05-11T22:22:51.282Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-08 14:16:44","lastModifiedDate":"2026-05-12 14:10:27","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43349","Ordinal":"1","Title":"f2fs: fix to avoid uninit-value access in f2fs_sanity_check_node","CVE":"CVE-2026-43349","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43349","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid uninit-value access in f2fs_sanity_check_node_footer\n\nsyzbot reported a f2fs bug as below:\n\nBUG: KMSAN: uninit-value in f2fs_sanity_check_node_footer+0x374/0xa20 fs/f2fs/node.c:1520\n f2fs_sanity_check_node_footer+0x374/0xa20 fs/f2fs/node.c:1520\n f2fs_finish_read_bio+0xe1e/0x1d60 fs/f2fs/data.c:177\n f2fs_read_end_io+0x6ab/0x2220 fs/f2fs/data.c:-1\n bio_endio+0x1006/0x1160 block/bio.c:1792\n submit_bio_noacct+0x533/0x2960 block/blk-core.c:891\n submit_bio+0x57a/0x620 block/blk-core.c:926\n blk_crypto_submit_bio include/linux/blk-crypto.h:203 [inline]\n f2fs_submit_read_bio+0x12c/0x360 fs/f2fs/data.c:557\n f2fs_submit_page_bio+0xee2/0x1450 fs/f2fs/data.c:775\n read_node_folio+0x384/0x4b0 fs/f2fs/node.c:1481\n __get_node_folio+0x5db/0x15d0 fs/f2fs/node.c:1576\n f2fs_get_inode_folio+0x40/0x50 fs/f2fs/node.c:1623\n do_read_inode fs/f2fs/inode.c:425 [inline]\n f2fs_iget+0x1209/0x9380 fs/f2fs/inode.c:596\n f2fs_fill_super+0x8f5a/0xb2e0 fs/f2fs/super.c:5184\n get_tree_bdev_flags+0x6e6/0x920 fs/super.c:1694\n get_tree_bdev+0x38/0x50 fs/super.c:1717\n f2fs_get_tree+0x35/0x40 fs/f2fs/super.c:5436\n vfs_get_tree+0xb3/0x5d0 fs/super.c:1754\n fc_mount fs/namespace.c:1193 [inline]\n do_new_mount_fc fs/namespace.c:3763 [inline]\n do_new_mount+0x885/0x1dd0 fs/namespace.c:3839\n path_mount+0x7a2/0x20b0 fs/namespace.c:4159\n do_mount fs/namespace.c:4172 [inline]\n __do_sys_mount fs/namespace.c:4361 [inline]\n __se_sys_mount+0x704/0x7f0 fs/namespace.c:4338\n __x64_sys_mount+0xe4/0x150 fs/namespace.c:4338\n x64_sys_call+0x39f0/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:166\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nThe root cause is: in f2fs_finish_read_bio(), we may access uninit data\nin folio if we failed to read the data from device into folio, let's add\na check condition to avoid such issue.","Type":"Description","Title":"f2fs: fix to avoid uninit-value access in f2fs_sanity_check_node"}]}}}