CVE-2022-50300

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Source
https://cve.org/CVERecord?id=CVE-2022-50300
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50300.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-50300
Downstream
Published
2025-09-15T14:45:55.896Z
Modified
2026-04-11T12:44:55.120849Z
Summary
btrfs: fix extent map use-after-free when handling missing device in read_one_chunk
Details

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

btrfs: fix extent map use-after-free when handling missing device in readonechunk

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

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50300.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
adfb69af7d8cb6a3958f75aad1ef4bc96891d116
Fixed
b8e7ed42bc3ca0d0e4191ee394d34962d3624c22
Fixed
fce3713197ebba239e1c7e02174ed216ea1ee014
Fixed
169a4cf46882974d4db6d85eb623ec898e51bbc0
Fixed
1742e1c90c3da344f3bb9b1f1309b3f47482756a

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50300.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
4.15.0
Fixed
5.15.87
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.0.18
Type
ECOSYSTEM
Events
Introduced
6.1.0
Fixed
6.1.4

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50300.json"