How severe is CVE-2021-31795?

CVE-2021-31795 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-31795 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-31795?

CVE-2021-31795 affects Pvrsrvkm.ko Project Pvrsrvkm.ko. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-31795?

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.

When was CVE-2021-31795 published?

CVE-2021-31795 was published on 2021-04-24 and last updated on 2026-06-17.

CVE-2021-31795

CVE-2021-31795 is a high-severity vulnerability in Pvrsrvkm.ko Project Pvrsrvkm.ko with a CVSS 3.x base score of 7.0. 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-787.

Key facts

Severity: High (CVSS 3.x base score 7.0)
CVSS v2: 6.9
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Pvrsrvkm.ko Project Pvrsrvkm.ko
Published: 2021-04-24
Last modified: 2026-06-17

Description

The PowerVR GPU kernel driver in pvrsrvkm.ko through 2021-04-24 for the Linux kernel, as used on Alcatel 1S phones, allows attackers to overwrite heap memory via PhysmemNewRamBackedPMR.

Frequently asked questions

What is CVE-2021-31795?: The PowerVR GPU kernel driver in pvrsrvkm.ko through 2021-04-24 for the Linux kernel, as used on Alcatel 1S phones, allows attackers to overwrite heap memory via PhysmemNewRamBackedPMR.
How severe is CVE-2021-31795?: CVE-2021-31795 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-31795 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-31795?: CVE-2021-31795 affects Pvrsrvkm.ko Project Pvrsrvkm.ko. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-31795?: 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.
When was CVE-2021-31795 published?: CVE-2021-31795 was published on 2021-04-24 and last updated on 2026-06-17.

References

https://mcyoloswagham.github.io/linux/

Affected products (1)

cpe:2.3:a:pvrsrvkm.ko_project:pvrsrvkm.ko:*:*:*:*:*:*:*:*

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