CVE-2022-50300

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map use-after-free when handling missing device in read_one_chunk Store the error code before freeing the extent_map. Though it's reference counted structure, in that function it's the first and last allocation so this would lead to a potential use-after-free. The error can happen eg. when chunk is stored on a missing device and the degraded mount option is missing. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=216721

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/169a4cf46882974d4db6d85eb623ec898e51bbc0	Patch
https://git.kernel.org/stable/c/1742e1c90c3da344f3bb9b1f1309b3f47482756a	Patch
https://git.kernel.org/stable/c/b8e7ed42bc3ca0d0e4191ee394d34962d3624c22	Patch
https://git.kernel.org/stable/c/fce3713197ebba239e1c7e02174ed216ea1ee014	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2025-09-15 15:15

Updated : 2025-12-04 15:33

NVD link : CVE-2022-50300

Mitre link : CVE-2022-50300

CVE.ORG link : CVE-2022-50300

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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