232 lines
10 KiB
JSON
232 lines
10 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-2021-47007",
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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": "2024-02-27T18:42:55.952Z",
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"datePublished": "2024-02-28T08:13:27.159Z",
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"dateUpdated": "2026-05-11T13:46:09.328Z"
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},
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"shortName": "Linux",
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"dateUpdated": "2026-05-11T13:46:09.328Z"
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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\nf2fs: fix panic during f2fs_resize_fs()\n\nf2fs_resize_fs() hangs in below callstack with testcase:\n- mkfs 16GB image & mount image\n- dd 8GB fileA\n- dd 8GB fileB\n- sync\n- rm fileA\n- sync\n- resize filesystem to 8GB\n\nkernel BUG at segment.c:2484!\nCall Trace:\n allocate_segment_by_default+0x92/0xf0 [f2fs]\n f2fs_allocate_data_block+0x44b/0x7e0 [f2fs]\n do_write_page+0x5a/0x110 [f2fs]\n f2fs_outplace_write_data+0x55/0x100 [f2fs]\n f2fs_do_write_data_page+0x392/0x850 [f2fs]\n move_data_page+0x233/0x320 [f2fs]\n do_garbage_collect+0x14d9/0x1660 [f2fs]\n free_segment_range+0x1f7/0x310 [f2fs]\n f2fs_resize_fs+0x118/0x330 [f2fs]\n __f2fs_ioctl+0x487/0x3680 [f2fs]\n __x64_sys_ioctl+0x8e/0xd0\n do_syscall_64+0x33/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xa9\n\nThe root cause is we forgot to check that whether we have enough space\nin resized filesystem to store all valid blocks in before-resizing\nfilesystem, then allocator will run out-of-space during block migration\nin free_segment_range()."
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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/f2fs/gc.c"
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],
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"version": "b4b10061ef98c583bcf82a4200703fbaa98c18dc",
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"fs/f2fs/gc.c"
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],
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"versions": [
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{
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"version": "5.8",
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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": "5.8",
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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": "5.10.38",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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},
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{
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"version": "5.11.22",
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"lessThanOrEqual": "5.11.*",
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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": "5.12.5",
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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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],
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"cpeApplicability": [
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"versionStartIncluding": "5.8",
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"versionEndExcluding": "5.10.38"
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],
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"title": "f2fs: fix panic during f2fs_resize_fs()",
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