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CVE-2024-47701

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ext4: avoid OOB when system.data xattr changes underneath the filesystem When looking up for an entry in an inlined directory,…

Published Oct 21, 2024CWE-416EPSS 0.25%

Overview

CVE-2024-47701 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:

ext4: avoid OOB when system.data xattr changes underneath the filesystem

When looking up for an entry in an inlined directory, if e_value_offs is

changed underneath the filesystem by some change in the block device, it

will lead to an out-of-bounds access that KASAN detects as an UAF.

EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.

loop0: detected capacity change from 2048 to 2047

==================================================================

BUG: KASAN: use-after-free in ext4_search_dir+0xf2/0x1c0 fs/ext4/namei.c:1500

Read of size 1 at addr ffff88803e91130f by task syz-executor269/5103

CPU: 0 UID: 0 PID: 5103 Comm: syz-executor269 Not tainted 6.11.0-rc4-syzkaller #0

Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014

Call Trace:

<TASK>

__dump_stack lib/dump_stack.c:93 [inline]

dump_stack_lvl+0x241/

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/2a6579ef5f2576a940125729f7409cc182f1c8dfRefgit.kernel.org/stable/c/371d0bacecd529f887ea2547333d9173e7bcdc0aRefgit.kernel.org/stable/c/5b076d37e8d99918e9294bd6b35a8bbb436819b0Refgit.kernel.org/stable/c/7fc22c3b3ffc0e952f5e0062dd11aa6ae76affbaRefgit.kernel.org/stable/c/8adf0eb4e361a9e060d54f4bd0ac9c5d85277d20Refgit.kernel.org/stable/c/be2e9b111e2790962cc66a177869b4e9717b4e29Refgit.kernel.org/stable/c/c6b72f5d82b1017bad80f9ebf502832fc321d796Refgit.kernel.org/stable/c/ccb8c18076e2e630fea23fbec583cdad61787fc5Refgit.kernel.org/stable/c/ea32883e4a03ed575a2eb7a66542022312bde477Reflists.debian.org/debian-lts-announce/2025/01/msg00001.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-47701?

CVE-2024-47701 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-2024-47701?

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-2024-47701?

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-2024-47701?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-47701 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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