CVE-2024-50277

dm: fix a crash if blk_alloc_disk fails

State: Published
Severity: 4.7 Medium
Published: Nov 19, 2024
Updated: May 11, 2026
Reserved: Oct 21, 2024

Description

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

dm: fix a crash if blk_alloc_disk fails

If blk_alloc_disk fails, the variable md->disk is set to an error value. cleanup_mapped_device will see that md->disk is non-NULL and it will attempt to access it, causing a crash on this statement "md->disk->private_data = NULL;".

Scores

CVSS	Score	Vector	Source
3.1	4.7 Medium	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-476 NULL Pointer Dereference

Affected Products

Product	Versions
LinuxLinux	74fa8f9c553f7b5ccab7d103acae63cc2e080465 to before d7aec2a06730b774a97caaf48cbbc58330a85829Affected 74fa8f9c553f7b5ccab7d103acae63cc2e080465 to before fed13a5478680614ba97fc87e71f16e2e197912eAffected
LinuxLinux	6.9Affected before 6.9Not affected 6.11.8 through 6.11.*Not affected 6.12 and laterNot affected

References

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