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CVE-2025-21797

23
FAUCET Score

CVE-2025-21797 is a high-severity use-after-free vulnerability in the Linux kernel's Corsair Void HID driver, specifically affecting the linux_kernel product. This flaw, rated 7.8 CVSS, stems from a missed call to cancel_delayed_work_sync(), leading to potential memory corruption. An attacker with local privileges could exploit this with low complexity to achieve high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.13, < 6.13.4CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.14CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*
6.14CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*

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
0.22%
Probability of exploitation in next 30 days
EPSS Percentile
12.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0022 is in the 42nd 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-2025-21797Important

kernel: HID: corsair-void: Add missing delayed work cancel for headset status

Feb 27, 2025

References

git.kernel.org / stable/c/2dcb56a0a4da6946f6c18288da595c13e0d2af86
Patch
git.kernel.org / stable/c/48e487b002891eb0aeaec704c9bed51f028deff1
Patch