How severe is CVE-2025-21797?

CVE-2025-21797 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-21797 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-21797?

CVE-2025-21797 primarily affects Linux Linux Kernel. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-21797?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-21797 have an EU (EUVD) identifier?

Yes. CVE-2025-21797 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5133.

When was CVE-2025-21797 published?

CVE-2025-21797 was published on 2025-02-27 and last updated on 2026-06-17.

CVE-2025-21797

CVE-2025-21797 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-5133
Weakness: CWE-416
Affected product: Linux Linux Kernel
Published: 2025-02-27
Last modified: 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: HID: corsair-void: Add missing delayed work cancel for headset status The cancel_delayed_work_sync() call was missed, causing a use-after-free in corsair_void_remove().

Frequently asked questions

What is CVE-2025-21797?: In the Linux kernel, the following vulnerability has been resolved: HID: corsair-void: Add missing delayed work cancel for headset status The cancel_delayed_work_sync() call was missed, causing a use-after-free in corsair_void_remove().
How severe is CVE-2025-21797?: CVE-2025-21797 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-21797 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-21797?: CVE-2025-21797 primarily affects Linux Linux Kernel. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-21797?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-21797 have an EU (EUVD) identifier?: Yes. CVE-2025-21797 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5133.
When was CVE-2025-21797 published?: CVE-2025-21797 was published on 2025-02-27 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*

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