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🛡️ CVE-2024-53220 — kernel

🟠 CVSS 7.8 — High ✅ No Known Exploit NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

f2fs: fix to account dirty data in __get_secs_required()

In the Linux kernel, the following vulnerability has been resolved:

f2fs: fix to account dirty data in __get_secs_required()

It will trigger system panic w/ testcase in [1]:

------------[ cut here ]------------

kernel BUG at fs/f2fs/segment.c:2752!

RIP: 0010:new_curseg+0xc81/0x2110

Call Trace:

f2fs_allocate_data_block+0x1c91/0x4540

do_write_page+0x163/0xdf0

f2fs_outplace_write_data+0x1aa/0x340

f2fs_do_write_data_page+0x797/0x2280

f2fs_write_single_data_page+0x16cd/0x2190

f2fs_write_cache_pages+0x994/0x1c80

f2fs_write_data_pages+0x9cc/0xea0

do_writepages+0x194/0x7a0

filemap_fdatawrite_wbc+0x12b/0x1a0

__filemap_fdatawrite_range+0xbb/0xf0

file_write_and_wait_range+0xa1/0x110

f2fs_do_sync_file+0x26f/0x1c50

f2fs_sync_file+0x12b/0x1d0

vfs_fsync_range+0xfa/0x230

do_fsync+0x3d/0x80

__x64_sys_fsync+0x37/0x50

x64_sys_call+0x1e88/0x20d0

do_syscall_64+0x4b/0x110

entry_SYSCALL_64_after_hwframe+0x76/0x7e

The root cause is if checkpoint_disabling and lfs_mode are both on,

it will trigger OPU for all overwritten data, it may cost more free

segment than expected, so f2fs must account those data correctly to

calculate cosumed free segments later, and return ENOSPC earlier to

avoid run out of free segment during block allocation.

[1] https://lore.kernel.org/fstests/[email protected]/

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Affected software

CVE-2024-53220 is recorded against 2 packages.

  • kernel (from 6.12.0 up to 6.12.2)
  • linux-kernel (from 6.12 up to 6.12.2)

Timeline and source

Published on 27 December 2024 and last revised on 12 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
lists.debian.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

Other advisories for this package

kernel has other advisories on record. If you are patching this one, these are worth checking on the same host:

Details

Severity High
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2024-12-27
Updated 2026-08-20
Modified 2026-08-12

Affected Packages

Software From version Fixed in
kernel 6.12.0 6.12.2
linux-kernel 6.12 6.12.2

Similar Threats

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