f2fs: fix to do sanity check on block address in f2fs_do_zero_range()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2022-49363
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-02-26 07:01:12 UTC
Updated2026-08-15 13:17:20 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on block address in f2fs_do_zero_range() As Yanming reported in bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=215894 I have encountered a bug in F2FS file system in kernel v5.17. I have uploaded the system call sequence as case.c, and a fuzzed image can be found in google net disk The kernel should enable CONFIG_KASAN=y and CONFIG_KASAN_INLINE=y. You can reproduce the bug by running the following commands: kernel BUG at fs/f2fs/segment.c:2291! Call Trace: f2fs_invalidate_blocks+0x193/0x2d0 f2fs_fallocate+0x2593/0x4a70 vfs_fallocate+0x2a5/0xac0 ksys_fallocate+0x35/0x70 __x64_sys_fallocate+0x8e/0xf0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae The root cause is, after image was fuzzed, block mapping info in inode will be inconsistent with SIT table, so in f2fs_fallocate(), it will cause panic when updating SIT with invalid blkaddr. Let's fix the issue by adding sanity check on block address before updating SIT table with it.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

Problem Types: NVD-CWE-noinfo

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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
None
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 75cd4e098d178433436abce08146a21647bb4585 7361c9f2bd6a8f0cbb41cdea9aff04765ff23f67 git Not specified
CNA Linux Linux affected 75cd4e098d178433436abce08146a21647bb4585 a34d7b49894b0533222188a52e2958750f830efd git Not specified
CNA Linux Linux affected 75cd4e098d178433436abce08146a21647bb4585 f2e1c38b5ac64eb1a16a89c52fb419409d12c25b git Not specified
CNA Linux Linux affected 75cd4e098d178433436abce08146a21647bb4585 470493be19a5730ed432e3ac0f29a2ee7fc6c557 git Not specified
CNA Linux Linux affected 75cd4e098d178433436abce08146a21647bb4585 805b48b234a2803cb7daec7f158af12f0fbaefac git Not specified
CNA Linux Linux affected 75cd4e098d178433436abce08146a21647bb4585 25f8236213a91efdf708b9d77e9e51b6fc3e141c git Not specified
CNA Linux Linux affected 4.2 Not specified
CNA Linux Linux unaffected 4.2 semver Not specified
CNA Linux Linux unaffected 5.4.198 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.121 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.46 5.15.* semver Not specified
CNA Linux Linux unaffected 5.17.14 5.17.* semver Not specified
CNA Linux Linux unaffected 5.18.3 5.18.* semver Not specified
CNA Linux Linux unaffected 5.19 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/7361c9f2bd6a8f0cbb41cdea9aff04765ff23f67 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/805b48b234a2803cb7daec7f158af12f0fbaefac 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a34d7b49894b0533222188a52e2958750f830efd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/25f8236213a91efdf708b9d77e9e51b6fc3e141c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/f2e1c38b5ac64eb1a16a89c52fb419409d12c25b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/470493be19a5730ed432e3ac0f29a2ee7fc6c557 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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