CVE-2023-52444

Advisory lineage Upstream: 0 Downstream: 20
Modified
Published: 22 Feb 2024, 16:21
Last modified:11 May 2026, 19:27

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.01% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

22 Feb 2024, 16:21
Published
Vulnerability first disclosed
11 May 2026, 19:27
Last Modified
Vulnerability information updated

Description

In 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]

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 1%

Techniques & Countermeasures

  • CWE-119•Improper Restriction of Operations within the Bounds of a Memory Buffer

    The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Affected Systems

  • linux•linux

    ≥ 7e01e7ad746bc8198a8b46163ddc73a1c7d22339, < 02160112e6d45c2610b049df6eb693d7a2e57b46 | ≥ 7e01e7ad746bc8198a8b46163ddc73a1c7d22339, < 5624a3c1b1ebc8991318e1cce2aa719542991024 | ≥ 7e01e7ad746bc8198a8b46163ddc73a1c7d22339, < 6f866885e147d33efc497f1095f35b2ee5ec7310 | ≥ 7e01e7ad746bc8198a8b46163ddc73a1c7d22339, < f100ba617d8be6c98a68f3744ef7617082975b77 | ≥ 7e01e7ad746bc8198a8b46163ddc73a1c7d22339, < f0145860c20be6bae6785c7a2249577674702ac7 | ≥ 7e01e7ad746bc8198a8b46163ddc73a1c7d22339, < d3c0b49aaa12a61d560528f5d605029ab57f0728 | ≥ 7e01e7ad746bc8198a8b46163ddc73a1c7d22339, < 2fb4867f4405aea8c0519d7d188207f232a57862 | ≥ 7e01e7ad746bc8198a8b46163ddc73a1c7d22339, < 53edb549565f55ccd0bdf43be3d66ce4c2d48b28 | 4.2

  • linux•linux_kernel

    ≥ 4.2.0, < 4.19.306 | ≥ 4.20, < 5.4.268 | ≥ 5.5.0, < 5.10.209 | ≥ 5.11.0, < 5.15.148 | ≥ 5.16.0, < 6.1.75 | ≥ 6.2.0, < 6.6.14 | ≥ 6.7.0, < 6.7.2

References (10)