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CVE-2022-49508

21
FAUCET Score

CVE-2022-49508 is a double free vulnerability in the Linux kernel's HID Elan driver, specifically within the elan_input_configured function. This flaw arises from an unnecessary explicit call to input_free_device() on a managed resource, leading to a double free condition. Rated 7.8 HIGH (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), successful exploitation could grant a local attacker high confidentiality, integrity, and availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.17, < 4.19.247CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.20, < 5.4.198CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.5, < 5.10.121CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.15.46CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 5.17.14CPE 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
0.30%
Probability of exploitation in next 30 days
EPSS Percentile
21.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0030 is in the 58th 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 Patches (2)

redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2022-49508Moderate

kernel: HID: elan: Fix potential double free in elan_input_configured

Feb 26, 2025

References

git.kernel.org / stable/c/1af20714fedad238362571620be0bd690ded05b6
Patch
git.kernel.org / stable/c/24f9dfdaece9bd75bb8dbfdba83eddeefdf7dc47
Patch
git.kernel.org / stable/c/5291451851feeb66fd4bf0826710f482f3b1ab38
Patch
git.kernel.org / stable/c/6d0726725c7c560495f5ff364862a2cefea542e3
Patch
git.kernel.org / stable/c/8bb1716507ebf12d50bbf181764481de3b6bc7fd
Patch
git.kernel.org / stable/c/c92ec22a991778a096342cf1a917ae36c5c86a90
Patch
git.kernel.org / stable/c/f1d4f19a796551edc6679a681ea1756b8c578c08
Patch