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🛡️ CVE-2024-47690 — kernel

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

Description

f2fs: get rid of online repaire on corrupted directory

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

f2fs: get rid of online repaire on corrupted directory

syzbot reports a f2fs bug as below:

kernel BUG at fs/f2fs/inode.c:896!

RIP: 0010:f2fs_evict_inode+0x1598/0x15c0 fs/f2fs/inode.c:896

Call Trace:

evict+0x532/0x950 fs/inode.c:704

dispose_list fs/inode.c:747 [inline]

evict_inodes+0x5f9/0x690 fs/inode.c:797

generic_shutdown_super+0x9d/0x2d0 fs/super.c:627

kill_block_super+0x44/0x90 fs/super.c:1696

kill_f2fs_super+0x344/0x690 fs/f2fs/super.c:4898

deactivate_locked_super+0xc4/0x130 fs/super.c:473

cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373

task_work_run+0x24f/0x310 kernel/task_work.c:228

ptrace_notify+0x2d2/0x380 kernel/signal.c:2402

ptrace_report_syscall include/linux/ptrace.h:415 [inline]

ptrace_report_syscall_exit include/linux/ptrace.h:477 [inline]

syscall_exit_work+0xc6/0x190 kernel/entry/common.c:173

syscall_exit_to_user_mode_prepare kernel/entry/common.c:200 [inline]

__syscall_exit_to_user_mode_work kernel/entry/common.c:205 [inline]

syscall_exit_to_user_mode+0x279/0x370 kernel/entry/common.c:218

do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89

entry_SYSCALL_64_after_hwframe+0x77/0x7f

RIP: 0010:f2fs_evict_inode+0x1598/0x15c0 fs/f2fs/inode.c:896

Online repaire on corrupted directory in f2fs_lookup() can generate

dirty data/meta while racing w/ readonly remount, it may leave dirty

inode after filesystem becomes readonly, however, checkpoint() will

skips flushing dirty inode in a state of readonly mode, result in

above panic.

Let's get rid of online repaire in f2fs_lookup(), and leave the work

to fsck.f2fs.

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-2024-47690 is recorded against 2 packages.

  • kernel (from 6.11.0 up to 6.11.2)
  • linux-kernel (from 6.11 up to 6.11.2)

Timeline and source

Published on 21 October 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)
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:

CVE-2024-47690 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

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 2024-10-21
Updated 2026-08-20
Modified 2026-08-12

Affected Packages

Software From version Fixed in
kernel 6.11.0 6.11.2
linux-kernel 6.11 6.11.2

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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