340 lines
16 KiB
JSON
340 lines
16 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2021-47117",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-03-04T18:12:48.838Z",
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"datePublished": "2024-03-15T20:14:24.291Z",
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"dateUpdated": "2026-05-11T13:48:22.727Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-05-11T13:48:22.727Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix bug on in ext4_es_cache_extent as ext4_split_extent_at failed\n\nWe got follow bug_on when run fsstress with injecting IO fault:\n[130747.323114] kernel BUG at fs/ext4/extents_status.c:762!\n[130747.323117] Internal error: Oops - BUG: 0 [#1] SMP\n......\n[130747.334329] Call trace:\n[130747.334553] ext4_es_cache_extent+0x150/0x168 [ext4]\n[130747.334975] ext4_cache_extents+0x64/0xe8 [ext4]\n[130747.335368] ext4_find_extent+0x300/0x330 [ext4]\n[130747.335759] ext4_ext_map_blocks+0x74/0x1178 [ext4]\n[130747.336179] ext4_map_blocks+0x2f4/0x5f0 [ext4]\n[130747.336567] ext4_mpage_readpages+0x4a8/0x7a8 [ext4]\n[130747.336995] ext4_readpage+0x54/0x100 [ext4]\n[130747.337359] generic_file_buffered_read+0x410/0xae8\n[130747.337767] generic_file_read_iter+0x114/0x190\n[130747.338152] ext4_file_read_iter+0x5c/0x140 [ext4]\n[130747.338556] __vfs_read+0x11c/0x188\n[130747.338851] vfs_read+0x94/0x150\n[130747.339110] ksys_read+0x74/0xf0\n\nThis patch's modification is according to Jan Kara's suggestion in:\nhttps://patchwork.ozlabs.org/project/linux-ext4/patch/20210428085158.3728201-1-yebin10@huawei.com/\n\"I see. Now I understand your patch. Honestly, seeing how fragile is trying\nto fix extent tree after split has failed in the middle, I would probably\ngo even further and make sure we fix the tree properly in case of ENOSPC\nand EDQUOT (those are easily user triggerable). Anything else indicates a\nHW problem or fs corruption so I'd rather leave the extent tree as is and\ndon't try to fix it (which also means we will not create overlapping\nextents).\""
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/ext4/extents.c"
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],
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"versions": [
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{
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"defaultStatus": "affected",
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"programFiles": [
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"fs/ext4/extents.c"
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],
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"versions": [
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{
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"version": "3.9",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "3.9",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "4.4.272",
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"lessThanOrEqual": "4.4.*",
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"status": "unaffected",
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},
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{
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"version": "4.9.272",
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"lessThanOrEqual": "4.9.*",
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"status": "unaffected",
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},
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{
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"version": "4.14.236",
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"lessThanOrEqual": "4.14.*",
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"status": "unaffected",
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},
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{
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"version": "4.19.194",
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"lessThanOrEqual": "4.19.*",
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"status": "unaffected",
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},
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{
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"version": "5.4.125",
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"lessThanOrEqual": "5.4.*",
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"status": "unaffected",
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},
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{
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"version": "5.10.43",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.12.10",
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"lessThanOrEqual": "5.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.13",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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"cpeApplicability": [
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"title": "ext4: fix bug on in ext4_es_cache_extent as ext4_split_extent_at failed",
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"content": {
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