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CVE-2024-26886

6.5 · MEDIUM
Published Apr 17, 2024 linux CWE-416 EPSS 0.49% (40th pctl)

Overview

CVE-2024-26886 is a medium-severity vulnerability affecting linux linux_kernel. It was published on April 17, 2024 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. 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: af_bluetooth: Fix deadlock

Attemting to do sock_lock on .recvmsg may cause a deadlock as shown

bellow, so instead of using sock_sock this uses sk_receive_queue.lock

on bt_sock_ioctl to avoid the UAF:

INFO: task kworker/u9:1:121 blocked for more than 30 seconds.

Not tainted 6.7.6-lemon #183

Workqueue: hci0 hci_rx_work

Call Trace:

<TASK>

__schedule+0x37d/0xa00

schedule+0x32/0xe0

__lock_sock+0x68/0xa0

? __pfx_autoremove_wake_function+0x10/0x10

lock_sock_nested+0x43/0x50

l2cap_sock_recv_cb+0x21/0xa0

l2cap_recv_frame+0x55b/0x30a0

? psi_task_switch+0xeb/0x270

? finish_task_switch.isra.0+0x93/0x2a0

hci_rx_work+0x33a/0x3f0

process_one_work+0x13a/0x2f0

worker_thread+0x2f0/0x410

? __pfx_worker_thread+0x10/0x10

kthread+0xe0/0x110

? __pfx_kthread+0x10/0x10

ret_from_fork+0x2c/0x50

? __pfx_kthread+0x10/0x10

ret_from_fork_asm+0x1b/0x30

</TASK>

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected Products

Vendor Product Versions Status
linux linux_kernel >= 5.10.206, < 5.11 Affected

References

Ref git.kernel.org/stable/c/2c9e2df022ef8b9d7fac58a04a2ef4ed25288955 Ref git.kernel.org/stable/c/60673f442984fe689d4127a5dd4be414247b3d67 Ref git.kernel.org/stable/c/64be3c6154886200708da0dfe259705fb992416c Ref git.kernel.org/stable/c/817e8138ce86001b2fa5c63d6ede756e205a01f7 Ref git.kernel.org/stable/c/f7b94bdc1ec107c92262716b073b3e816d4784fb Ref git.kernel.org/stable/c/2c9e2df022ef8b9d7fac58a04a2ef4ed25288955 Ref git.kernel.org/stable/c/64be3c6154886200708da0dfe259705fb992416c Ref git.kernel.org/stable/c/817e8138ce86001b2fa5c63d6ede756e205a01f7 Ref git.kernel.org/stable/c/cb8adca52f306563d958a863bb0cbae9c184d1ae Ref git.kernel.org/stable/c/f7b94bdc1ec107c92262716b073b3e816d4784fb

Frequently Asked Questions

What is CVE-2024-26886?

CVE-2024-26886 is a medium-severity vulnerability affecting linux linux_kernel. It was published on April 17, 2024 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2024-26886?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. 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-2024-26886?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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-2024-26886?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-26886 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

Autonomous Discovery

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HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.

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