What is CVE-2026-63883?

CVE-2026-63883 is a high-severity vulnerability in Linux. CVSS score: 7.3/10. Published 2026-07-19.

How severe is CVE-2026-63883?

High severity. CVSS v3 base score is 7.3 out of 10.

Vulnerability in Linux

CVE-2026-63883

In the Linux kernel, the following vulnerability has been resolved: serial: qcom_geni: fix kfifo underflow when flush precedes DMA completion IRQ When uart_flush_buffer() runs before the DMA completion IRQ is delivered, the following rac…

EPSS: 0.002 (10.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.

Affected products

Linux — versions 2aaa43c7077833301c237684cd7bc9ae5e3dec95, 6.3, 0

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67

Frequently asked questions

What is CVE-2026-63883?: CVE-2026-63883 is a high-severity vulnerability in Linux. CVSS score: 7.3/10. Published 2026-07-19.
How severe is CVE-2026-63883?: High severity. CVSS v3 base score is 7.3 out of 10.