CVE-2024-49868

5.5 · MEDIUM

Published Oct 21, 2024 linux CWE-476 EPSS 0.29% (21th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-49868 is a medium-severity vulnerability affecting linux linux_kernel. It was published on October 21, 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:

btrfs: fix a NULL pointer dereference when failed to start a new trasacntion

[BUG]

Syzbot reported a NULL pointer dereference with the following crash:

FAULT_INJECTION: forcing a failure.

start_transaction+0x830/0x1670 fs/btrfs/transaction.c:676

prepare_to_relocate+0x31f/0x4c0 fs/btrfs/relocation.c:3642

relocate_block_group+0x169/0xd20 fs/btrfs/relocation.c:3678

...

BTRFS info (device loop0): balance: ended with status: -12

Oops: general protection fault, probably for non-canonical address 0xdffffc00000000cc: 0000 [#1] PREEMPT SMP KASAN NOPTI

KASAN: null-ptr-deref in range [0x0000000000000660-0x0000000000000667]

RIP: 0010:btrfs_update_reloc_root+0x362/0xa80 fs/btrfs/relocation.c:926

Call Trace:

<TASK>

commit_fs_roots+0x2ee/0x720 fs/btrfs/transaction.c:1496

btrfs_commit_transaction+0xfaf/0x3740 fs/btrfs/transaction.c:2430

del_balance_item fs/btrfs/volumes.c:3678 [inline]

reset_ba

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	>= 0, < 5.10.227	Affected

References

Frequently Asked Questions

What is CVE-2024-49868?

CVE-2024-49868 is a medium-severity vulnerability affecting linux linux_kernel. It was published on October 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-49868?

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-2024-49868?

How can CyberStrike help with CVE-2024-49868?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-49868 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

AI agents map your attack surface to find vulnerabilities like this one.

Continuous Pentesting

Automated penetration testing that runs continuously, not just quarterly.

Code Review

AI-driven PR review catches vulnerable dependencies before they ship.

HackBrowser

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

Related MEDIUM CVEs from 2024

View all →

6.9

CVE-2023-3726

OCSInventory allow stored email template with special characters that lead to a Stored cross-site Sc

6.9

CVE-2023-51719