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vuln-cve/data/2021/47xxx/CVE-2021-47145.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2021-47145",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2024-03-04T18:12:48.845Z",
"datePublished": "2024-03-25T09:07:42.384Z",
"dateUpdated": "2026-05-11T13:48:54.208Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T13:48:54.208Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: do not BUG_ON in link_to_fixup_dir\n\nWhile doing error injection testing I got the following panic\n\n kernel BUG at fs/btrfs/tree-log.c:1862!\n invalid opcode: 0000 [#1] SMP NOPTI\n CPU: 1 PID: 7836 Comm: mount Not tainted 5.13.0-rc1+ #305\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-2.fc32 04/01/2014\n RIP: 0010:link_to_fixup_dir+0xd5/0xe0\n RSP: 0018:ffffb5800180fa30 EFLAGS: 00010216\n RAX: fffffffffffffffb RBX: 00000000fffffffb RCX: ffff8f595287faf0\n RDX: ffffb5800180fa37 RSI: ffff8f5954978800 RDI: 0000000000000000\n RBP: ffff8f5953af9450 R08: 0000000000000019 R09: 0000000000000001\n R10: 000151f408682970 R11: 0000000120021001 R12: ffff8f5954978800\n R13: ffff8f595287faf0 R14: ffff8f5953c77dd0 R15: 0000000000000065\n FS: 00007fc5284c8c40(0000) GS:ffff8f59bbd00000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007fc5287f47c0 CR3: 000000011275e002 CR4: 0000000000370ee0\n Call Trace:\n replay_one_buffer+0x409/0x470\n ? btree_read_extent_buffer_pages+0xd0/0x110\n walk_up_log_tree+0x157/0x1e0\n walk_log_tree+0xa6/0x1d0\n btrfs_recover_log_trees+0x1da/0x360\n ? replay_one_extent+0x7b0/0x7b0\n open_ctree+0x1486/0x1720\n btrfs_mount_root.cold+0x12/0xea\n ? __kmalloc_track_caller+0x12f/0x240\n legacy_get_tree+0x24/0x40\n vfs_get_tree+0x22/0xb0\n vfs_kern_mount.part.0+0x71/0xb0\n btrfs_mount+0x10d/0x380\n ? vfs_parse_fs_string+0x4d/0x90\n legacy_get_tree+0x24/0x40\n vfs_get_tree+0x22/0xb0\n path_mount+0x433/0xa10\n __x64_sys_mount+0xe3/0x120\n do_syscall_64+0x3d/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nWe can get -EIO or any number of legitimate errors from\nbtrfs_search_slot(), panicing here is not the appropriate response. The\nerror path for this code handles errors properly, simply return the\nerror."
}
],
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{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"fs/btrfs/tree-log.c"
],
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"versionType": "git"
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"status": "affected"
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{
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"lessThan": "2.6.29",
"status": "unaffected",
"versionType": "semver"
},
{
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"lessThanOrEqual": "4.4.*",
"status": "unaffected",
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},
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},
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{
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"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "semver"
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{
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"lessThanOrEqual": "5.10.*",
"status": "unaffected",
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{
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"lessThanOrEqual": "5.12.*",
"status": "unaffected",
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},
{
"version": "5.13",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"references": [
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"url": "https://git.kernel.org/stable/c/91df99a6eb50d5a1bc70fff4a09a0b7ae6aab96d"
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"title": "btrfs: do not BUG_ON in link_to_fixup_dir",
"x_generator": {
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"adp": [
{
"title": "CISA ADP Vulnrichment",
"metrics": [
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"other": {
"type": "ssvc",
"content": {
"id": "CVE-2021-47145",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2024-03-25T14:12:43.029638Z"
}
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"dateUpdated": "2024-06-04T17:14:28.150Z"
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"shortName": "CVE",
"dateUpdated": "2024-08-04T05:24:39.917Z"
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"title": "CVE Program Container",
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