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CVE-2024-35896

7.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: netfilter: validate user input for expected length I got multiple syzbot reports showing old bugs exposed by BPF after commit 2…

Published May 19, 2024CWE-125EPSS 0.23%

Overview

CVE-2024-35896 is a high-severity vulnerability. It was published on May 19, 2024 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, 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:

netfilter: validate user input for expected length

I got multiple syzbot reports showing old bugs exposed

by BPF after commit 20f2505fb436 ("bpf: Try to avoid kzalloc

in cgroup/{s,g}etsockopt")

setsockopt() @optlen argument should be taken into account

before copying data.

BUG: KASAN: slab-out-of-bounds in copy_from_sockptr_offset include/linux/sockptr.h:49 [inline]

BUG: KASAN: slab-out-of-bounds in copy_from_sockptr include/linux/sockptr.h:55 [inline]

BUG: KASAN: slab-out-of-bounds in do_replace net/ipv4/netfilter/ip_tables.c:1111 [inline]

BUG: KASAN: slab-out-of-bounds in do_ipt_set_ctl+0x902/0x3dd0 net/ipv4/netfilter/ip_tables.c:1627

Read of size 96 at addr ffff88802cd73da0 by task syz-executor.4/7238

CPU: 1 PID: 7238 Comm: syz-executor.4 Not tainted 6.9.0-rc2-next-20240403-syzkaller #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024

Call Trace:

<TASK>

__dump_sta

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/0c83842df40f86e529db6842231154772c20edccRefgit.kernel.org/stable/c/0f038242b77ddfc505bf4163d4904c1abd2e74d6Refgit.kernel.org/stable/c/18aae2cb87e5faa9c5bd865260ceadac60d5a6c5Refgit.kernel.org/stable/c/440e948cf0eff32cfe322dcbca3f2525354b159bRefgit.kernel.org/stable/c/58f2bfb789e6bd3bc24a2c9c1580f3c67aec3018Refgit.kernel.org/stable/c/81d51b9b7c95e791ba3c1a2dd77920a9d3b3f525Refgit.kernel.org/stable/c/0c83842df40f86e529db6842231154772c20edccRefgit.kernel.org/stable/c/0f038242b77ddfc505bf4163d4904c1abd2e74d6Refgit.kernel.org/stable/c/18aae2cb87e5faa9c5bd865260ceadac60d5a6c5Refgit.kernel.org/stable/c/440e948cf0eff32cfe322dcbca3f2525354b159b

How CyberStrike helps

Frequently asked questions

What is CVE-2024-35896?

CVE-2024-35896 is a high-severity vulnerability. It was published on May 19, 2024 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2024-35896?

This vulnerability has a CVSS 3.1 base score of 7.1, 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-2024-35896?

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-2024-35896?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-35896 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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