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CVE-2022-48878

21
FAUCET Score

CVE-2022-48878 is a use-after-free vulnerability (CWE-416) in the Linux kernel's Bluetooth HCI Qualcomm Atheros driver. It occurs during system reboot when the driver shutdown callback is invoked even if the HCI device or its serial device (serdev) is not properly open, leading to a kernel crash. Rated 7.8 HIGH (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), this vulnerability allows a local attacker to cause a denial of service. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.8, < 5.10.165CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.15.90CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 6.1.8CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
15.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 48th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2022-48878Important

kernel: Bluetooth: hci_qca: Fix driver shutdown on closed serdev

Aug 21, 2024

References

git.kernel.org / stable/c/272970be3dabd24cbe50e393ffee8f04aec3b9a8
Patch
git.kernel.org / stable/c/908d1742b6e694e84ead5c62e4b7c1bfbb8b46a3
Patch
git.kernel.org / stable/c/e84ec6e25df9bb0968599e92eacedaf3a0a5b587
Patch
git.kernel.org / stable/c/ea3ebda47dd56f6e1c62f2e0e1b6e1b0a973e447
Patch