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CVE-2022-50447

22
FAUCET Score

CVE-2022-50447 is a null-pointer dereference vulnerability in the Linux kernel's Bluetooth subsystem, specifically within the hci_create_cis_sync function. This flaw can lead to a system crash when attempting to connect multiple ISO sockets without using DEFER_SETUP. Rated Medium severity with a CVSS score of 5.5, it requires local access (AV:L) and results in high availability impact (A:H), but no confidentiality or integrity loss. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.0, < 6.0.16CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.1, < 6.1.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.15%
Probability of exploitation in next 30 days
EPSS Percentile
4.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0015 is in the 30th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-427.13.1.el9_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsFixed in: kernel-0:5.14.0-284.152.1.el9_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsFixed in: kernel-rt-0:5.14.0-284.152.1.rt14.437.el9_2
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2022-50447Moderate

kernel: Bluetooth: hci_conn: Fix crash on hci_create_cis_sync

Oct 1, 2025

References

git.kernel.org / stable/c/09a3b0c9c7c6b10587fbb610b718014703cff341
Patch
git.kernel.org / stable/c/50757a259ba78c4e938b5735e76ffec6cd0c942e
Patch
git.kernel.org / stable/c/a190cd9dc62d6ebeb679c1abe9dda4162dfefc84
Patch