Revert "f2fs: fix to do sanity check on extent cache correctly"

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2023-53763
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-12-08 02:15:52 UTC
Updated2026-08-04 10:19:20 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: Revert "f2fs: fix to do sanity check on extent cache correctly" syzbot reports a f2fs bug as below: UBSAN: array-index-out-of-bounds in fs/f2fs/f2fs.h:3275:19 index 1409 is out of range for type '__le32[923]' (aka 'unsigned int[923]') Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:217 [inline] __ubsan_handle_out_of_bounds+0x11c/0x150 lib/ubsan.c:348 inline_data_addr fs/f2fs/f2fs.h:3275 [inline] __recover_inline_status fs/f2fs/inode.c:113 [inline] do_read_inode fs/f2fs/inode.c:480 [inline] f2fs_iget+0x4730/0x48b0 fs/f2fs/inode.c:604 f2fs_fill_super+0x640e/0x80c0 fs/f2fs/super.c:4601 mount_bdev+0x276/0x3b0 fs/super.c:1391 legacy_get_tree+0xef/0x190 fs/fs_context.c:611 vfs_get_tree+0x8c/0x270 fs/super.c:1519 do_new_mount+0x28f/0xae0 fs/namespace.c:3335 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The issue was bisected to: commit d48a7b3a72f121655d95b5157c32c7d555e44c05 Author: Chao Yu <[email protected]> Date: Mon Jan 9 03:49:20 2023 +0000 f2fs: fix to do sanity check on extent cache correctly The root cause is we applied both v1 and v2 of the patch, v2 is the right fix, so it needs to revert v1 in order to fix reported issue. v1: commit d48a7b3a72f1 ("f2fs: fix to do sanity check on extent cache correctly") https://lore.kernel.org/lkml/[email protected]/ v2: commit 269d11948100 ("f2fs: fix to do sanity check on extent cache correctly") https://lore.kernel.org/lkml/[email protected]/

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001390000 probability, percentile 0.037230000 (date 2026-08-05)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 85eb8b61dd4cfc7a839a0e86287b92ca6193444e 0d545a8e77cbd1fbad311b18952e38e0f7672ab4 git Not specified
CNA Linux Linux affected d48a7b3a72f121655d95b5157c32c7d555e44c05 ea35767edc78327c686e21fe1231b668f11be0db git Not specified
CNA Linux Linux affected d48a7b3a72f121655d95b5157c32c7d555e44c05 bbb3cd66301ef752fae2922452660f228d69bcaf git Not specified
CNA Linux Linux affected d48a7b3a72f121655d95b5157c32c7d555e44c05 958ccbbf1ce716d77c7cfa79ace50a421c1eed73 git Not specified
CNA Linux Linux affected a3d1fd01250ffca88c11e9bd8d19be779acc7557 git Not specified
CNA Linux Linux affected 6.1.29 6.1.53 semver Not specified
CNA Linux Linux affected 6.2.5 6.3 semver Not specified
CNA Linux Linux affected 6.3 Not specified
CNA Linux Linux unaffected 6.3 semver Not specified
CNA Linux Linux unaffected 6.1.53 6.1.* semver Not specified
CNA Linux Linux unaffected 6.4.16 6.4.* semver Not specified
CNA Linux Linux unaffected 6.5.3 6.5.* semver Not specified
CNA Linux Linux unaffected 6.6 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/958ccbbf1ce716d77c7cfa79ace50a421c1eed73 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ea35767edc78327c686e21fe1231b668f11be0db 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0d545a8e77cbd1fbad311b18952e38e0f7672ab4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/bbb3cd66301ef752fae2922452660f228d69bcaf 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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