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CVE-2024-49950

8.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix uaf in l2cap_connect [Syzbot reported] BUG: KASAN: slab-use-after-free in l2cap_connect.constprop.0+0x10d…

Published Oct 21, 2024CWE-416EPSS 0.37%

Overview

CVE-2024-49950 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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

Bluetooth: L2CAP: Fix uaf in l2cap_connect

[Syzbot reported]

BUG: KASAN: slab-use-after-free in l2cap_connect.constprop.0+0x10d8/0x1270 net/bluetooth/l2cap_core.c:3949

Read of size 8 at addr ffff8880241e9800 by task kworker/u9:0/54

CPU: 0 UID: 0 PID: 54 Comm: kworker/u9:0 Not tainted 6.11.0-rc6-syzkaller-00268-g788220eee30d #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024

Workqueue: hci2 hci_rx_work

Call Trace:

<TASK>

__dump_stack lib/dump_stack.c:93 [inline]

dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119

print_address_description mm/kasan/report.c:377 [inline]

print_report+0xc3/0x620 mm/kasan/report.c:488

kasan_report+0xd9/0x110 mm/kasan/report.c:601

l2cap_connect.constprop.0+0x10d8/0x1270 net/bluetooth/l2cap_core.c:3949

l2cap_connect_req net/bluetooth/l2cap_core.c:4080 [inline]

l2cap_bredr_sig_cmd net/bluetooth/l2cap_core.c:4772 [inline]

l2cap_sig_channel net/

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/333b4fd11e89b29c84c269123f871883a30be586Refgit.kernel.org/stable/c/686e05c9dbd68766c6bda5f31f7e077f36a7fb29Refgit.kernel.org/stable/c/78d30ce16fdf9c301bcd8b83ce613cea079cea83Refgit.kernel.org/stable/c/a1c6174e23df10b8e5770e82d63bc6e2118a3dc7Refgit.kernel.org/stable/c/b22346eec479a30bfa4a02ad2c551b54809694d0Refgit.kernel.org/stable/c/b90907696c30172b809aa3dd2f0caffae761e4c6Reflists.debian.org/debian-lts-announce/2025/01/msg00001.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-49950?

CVE-2024-49950 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2024-49950?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-49950?

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-2024-49950?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-49950 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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