f2fs: fix to truncate first page in error path of f2fs_truncate()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-40137
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-11-12 11:15:43 UTC
Updated2026-10-30 13:18:13 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: f2fs: fix to truncate first page in error path of f2fs_truncate() syzbot reports a bug as below: loop0: detected capacity change from 0 to 40427 F2FS-fs (loop0): Wrong SSA boundary, start(3584) end(4096) blocks(3072) F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock F2FS-fs (loop0): invalid crc value F2FS-fs (loop0): f2fs_convert_inline_folio: corrupted inline inode ino=3, i_addr[0]:0x1601, run fsck to fix. ------------[ cut here ]------------ kernel BUG at fs/inode.c:753! RIP: 0010:clear_inode+0x169/0x190 fs/inode.c:753 Call Trace: <TASK> evict+0x504/0x9c0 fs/inode.c:810 f2fs_fill_super+0x5612/0x6fa0 fs/f2fs/super.c:5047 get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1692 vfs_get_tree+0x8f/0x2b0 fs/super.c:1815 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3808 do_mount fs/namespace.c:4136 [inline] __do_sys_mount fs/namespace.c:4347 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4324 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f During f2fs_evict_inode(), clear_inode() detects that we missed to truncate all page cache before destorying inode, that is because in below path, we will create page #0 in cache, but missed to drop it in error path, let's fix it. - evict - f2fs_evict_inode - f2fs_truncate - f2fs_convert_inline_inode - f2fs_grab_cache_folio : create page #0 in cache - f2fs_convert_inline_folio : sanity check failed, return -EFSCORRUPTED - clear_inode detects that inode->i_data.nrpages is not zero

Risk And Classification

EPSS: 0.002140000 probability, percentile 0.117220000 (date 2026-10-31)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 92dffd01790a5219d234fc83c3ba854f4490b7f4 3500d7e1ba53f39bdb8a5aa9c2066b2f08e8c92e git Not specified
CNA Linux Linux affected 92dffd01790a5219d234fc83c3ba854f4490b7f4 83a8e4efea022506a0e049e7206bdf8be9f78148 git Not specified
CNA Linux Linux affected 92dffd01790a5219d234fc83c3ba854f4490b7f4 a7b7ebdd7045a36454b3e388a2ecf50344fad9e6 git Not specified
CNA Linux Linux affected 92dffd01790a5219d234fc83c3ba854f4490b7f4 3b0c8908faa18cded84d64822882a830ab1f4d26 git Not specified
CNA Linux Linux affected 92dffd01790a5219d234fc83c3ba854f4490b7f4 9251a9e6e871cb03c4714a18efa8f5d4a8818450 git Not specified
CNA Linux Linux affected 3.19 Not specified
CNA Linux Linux unaffected 3.19 semver Not specified
CNA Linux Linux unaffected 6.1.191 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.112 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.53 6.12.* semver Not specified
CNA Linux Linux unaffected 6.17.3 6.17.* semver Not specified
CNA Linux Linux unaffected 6.18 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/3b0c8908faa18cded84d64822882a830ab1f4d26 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/83a8e4efea022506a0e049e7206bdf8be9f78148 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a7b7ebdd7045a36454b3e388a2ecf50344fad9e6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9251a9e6e871cb03c4714a18efa8f5d4a8818450 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3500d7e1ba53f39bdb8a5aa9c2066b2f08e8c92e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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