f2fs: fix to avoid dirent corruption

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Summary

CVECVE-2023-52444
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-02-22 17:15:08 UTC
Updated2026-08-04 10:18:27 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid dirent corruption As Al reported in link[1]: f2fs_rename() ... if (old_dir != new_dir && !whiteout) f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir); else f2fs_put_page(old_dir_page, 0); You want correct inumber in the ".." link. And cross-directory rename does move the source to new parent, even if you'd been asked to leave a whiteout in the old place. [1] https://lore.kernel.org/all/20231017055040.GN800259@ZenIV/ With below testcase, it may cause dirent corruption, due to it missed to call f2fs_set_link() to update ".." link to new directory. - mkdir -p dir/foo - renameat2 -w dir/foo bar [ASSERT] (__chk_dots_dentries:1421) --> Bad inode number[0x4] for '..', parent parent ino is [0x3] [FSCK] other corrupted bugs [Fail]

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

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

Problem Types: CWE-119

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 7e01e7ad746bc8198a8b46163ddc73a1c7d22339 02160112e6d45c2610b049df6eb693d7a2e57b46 git Not specified
CNA Linux Linux affected 7e01e7ad746bc8198a8b46163ddc73a1c7d22339 5624a3c1b1ebc8991318e1cce2aa719542991024 git Not specified
CNA Linux Linux affected 7e01e7ad746bc8198a8b46163ddc73a1c7d22339 6f866885e147d33efc497f1095f35b2ee5ec7310 git Not specified
CNA Linux Linux affected 7e01e7ad746bc8198a8b46163ddc73a1c7d22339 f100ba617d8be6c98a68f3744ef7617082975b77 git Not specified
CNA Linux Linux affected 7e01e7ad746bc8198a8b46163ddc73a1c7d22339 f0145860c20be6bae6785c7a2249577674702ac7 git Not specified
CNA Linux Linux affected 7e01e7ad746bc8198a8b46163ddc73a1c7d22339 d3c0b49aaa12a61d560528f5d605029ab57f0728 git Not specified
CNA Linux Linux affected 7e01e7ad746bc8198a8b46163ddc73a1c7d22339 2fb4867f4405aea8c0519d7d188207f232a57862 git Not specified
CNA Linux Linux affected 7e01e7ad746bc8198a8b46163ddc73a1c7d22339 53edb549565f55ccd0bdf43be3d66ce4c2d48b28 git Not specified
CNA Linux Linux affected 4.2 Not specified
CNA Linux Linux unaffected 4.2 semver Not specified
CNA Linux Linux unaffected 4.19.306 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.268 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.209 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.148 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.75 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.14 6.6.* semver Not specified
CNA Linux Linux unaffected 6.7.2 6.7.* semver Not specified
CNA Linux Linux unaffected 6.8 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/6f866885e147d33efc497f1095f35b2ee5ec7310 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/53edb549565f55ccd0bdf43be3d66ce4c2d48b28 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/06/msg00016.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/f100ba617d8be6c98a68f3744ef7617082975b77 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/f0145860c20be6bae6785c7a2249577674702ac7 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/d3c0b49aaa12a61d560528f5d605029ab57f0728 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/02160112e6d45c2610b049df6eb693d7a2e57b46 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/06/msg00020.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/2fb4867f4405aea8c0519d7d188207f232a57862 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/5624a3c1b1ebc8991318e1cce2aa719542991024 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 200182 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-6688-1)
  • 200241 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6726-1)
  • 200243 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6725-1)

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