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CVE-2024-47691

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid use-after-free in f2fs_stop_gc_thread() syzbot reports a f2fs bug as below: __dump_stack lib/dump_stack.c:…

Published Oct 21, 2024CWE-416EPSS 0.24%

Overview

CVE-2024-47691 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

f2fs: fix to avoid use-after-free in f2fs_stop_gc_thread()

syzbot reports a f2fs bug as below:

__dump_stack lib/dump_stack.c:88 [inline]

dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114

print_report+0xe8/0x550 mm/kasan/report.c:491

kasan_report+0x143/0x180 mm/kasan/report.c:601

kasan_check_range+0x282/0x290 mm/kasan/generic.c:189

instrument_atomic_read_write include/linux/instrumented.h:96 [inline]

atomic_fetch_add_relaxed include/linux/atomic/atomic-instrumented.h:252 [inline]

__refcount_add include/linux/refcount.h:184 [inline]

__refcount_inc include/linux/refcount.h:241 [inline]

refcount_inc include/linux/refcount.h:258 [inline]

get_task_struct include/linux/sched/task.h:118 [inline]

kthread_stop+0xca/0x630 kernel/kthread.c:704

f2fs_stop_gc_thread+0x65/0xb0 fs/f2fs/gc.c:210

f2fs_do_shutdown+0x192/0x540 fs/f2fs/file.c:2283

f2fs_ioc_shutdown fs/f2fs/file.c:2325 [inline]

__f2fs_ioctl+0x443a/0xbe60 fs/

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/7c339dee7eb0f8e4cadc317c595f898ef04dae30Refgit.kernel.org/stable/c/c7f114d864ac91515bb07ac271e9824a20f5ed95Refgit.kernel.org/stable/c/d79343cd66343709e409d96b2abb139a0a55ce34Refgit.kernel.org/stable/c/fc18e655b62ac6bc9f12f5de0d749b4a3fe1e812

How CyberStrike helps

Frequently asked questions

What is CVE-2024-47691?

CVE-2024-47691 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-47691?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-47691?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-47691?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-47691 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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