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CVE-2024-36886

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: tipc: fix UAF in error path Sam Page (sam4k) working with Trend Micro Zero Day Initiative reported a UAF in the tipc_buf_append…

Published May 30, 2024CWE-416EPSS 1.31%

Overview

CVE-2024-36886 is a critical-severity vulnerability. It was published on May 30, 2024 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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

tipc: fix UAF in error path

Sam Page (sam4k) working with Trend Micro Zero Day Initiative reported

a UAF in the tipc_buf_append() error path:

BUG: KASAN: slab-use-after-free in kfree_skb_list_reason+0x47e/0x4c0

linux/net/core/skbuff.c:1183

Read of size 8 at addr ffff88804d2a7c80 by task poc/8034

CPU: 1 PID: 8034 Comm: poc Not tainted 6.8.2 #1

Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS

1.16.0-debian-1.16.0-5 04/01/2014

Call Trace:

<IRQ>

__dump_stack linux/lib/dump_stack.c:88

dump_stack_lvl+0xd9/0x1b0 linux/lib/dump_stack.c:106

print_address_description linux/mm/kasan/report.c:377

print_report+0xc4/0x620 linux/mm/kasan/report.c:488

kasan_report+0xda/0x110 linux/mm/kasan/report.c:601

kfree_skb_list_reason+0x47e/0x4c0 linux/net/core/skbuff.c:1183

skb_release_data+0x5af/0x880 linux/net/core/skbuff.c:1026

skb_release_all linux/net/core/skbuff.c:1094

__kfree_skb linux/net/core/skbuff.c:1108

kfr

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/080cbb890286cd794f1ee788bbc5463e2deb7c2bRefgit.kernel.org/stable/c/21ea04aad8a0839b4ec27ef1691ca480620e8e14Refgit.kernel.org/stable/c/367766ff9e407f8a68409b7ce4dc4d5a72afeab1Refgit.kernel.org/stable/c/66116556076f0b96bc1aa9844008c743c8c67684Refgit.kernel.org/stable/c/93bc2d6d16f2c3178736ba6b845b30475856dc40Refgit.kernel.org/stable/c/a0fbb26f8247e326a320e2cb4395bfb234332c90Refgit.kernel.org/stable/c/e19ec8ab0e25bc4803d7cc91c84e84532e2781bdRefgit.kernel.org/stable/c/ffd4917c1edb3c3ff334fce3704fbe9c39f35682Refgit.kernel.org/stable/c/080cbb890286cd794f1ee788bbc5463e2deb7c2bRefgit.kernel.org/stable/c/21ea04aad8a0839b4ec27ef1691ca480620e8e14

How CyberStrike helps

Frequently asked questions

What is CVE-2024-36886?

CVE-2024-36886 is a critical-severity vulnerability. It was published on May 30, 2024 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2024-36886?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-36886?

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-2024-36886?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-36886 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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