CVE-2024-46735

5.5 · MEDIUM

Published Sep 18, 2024 linux CWE-476 EPSS 0.24% (16th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-46735 is a medium-severity vulnerability affecting linux linux_kernel. It was published on September 18, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

ublk_drv: fix NULL pointer dereference in ublk_ctrl_start_recovery()

When two UBLK_CMD_START_USER_RECOVERY commands are submitted, the

first one sets 'ubq->ubq_daemon' to NULL, and the second one triggers

WARN in ublk_queue_reinit() and subsequently a NULL pointer dereference

issue.

Fix it by adding the check in ublk_ctrl_start_recovery() and return

immediately in case of zero 'ub->nr_queues_ready'.

BUG: kernel NULL pointer dereference, address: 0000000000000028

RIP: 0010:ublk_ctrl_start_recovery.constprop.0+0x82/0x180

Call Trace:

<TASK>

? __die+0x20/0x70

? page_fault_oops+0x75/0x170

? exc_page_fault+0x64/0x140

? asm_exc_page_fault+0x22/0x30

? ublk_ctrl_start_recovery.constprop.0+0x82/0x180

ublk_ctrl_uring_cmd+0x4f7/0x6c0

? pick_next_task_idle+0x26/0x40

io_uring_cmd+0x9a/0x1b0

io_issue_sqe+0x193/0x3f0

io_wq_submit_work+0x9b/0x390

io_worker_handle_work+0x165/0x360

io_wq_w

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	>= 6.1, < 6.1.110	Affected

References

Ref git.kernel.org/stable/c/136a29d8112df4ea0a57f9602ddf3579e04089dc Ref git.kernel.org/stable/c/7c890ef60bf417d3fe5c6f7a9f6cef0e1d77f74f Ref git.kernel.org/stable/c/ca249435893dda766f3845c15ca77ca5672022d8 Ref git.kernel.org/stable/c/e58f5142f88320a5b1449f96a146f2f24615c5c7 Ref lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Frequently Asked Questions

What is CVE-2024-46735?

CVE-2024-46735 is a medium-severity vulnerability affecting linux linux_kernel. It was published on September 18, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-46735?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-46735?

How can CyberStrike help with CVE-2024-46735?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-46735 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

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HackBrowser

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