Buffer overflow in Linux

CVE-2026-23422

In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: Fix interrupt storm after receiving bad if_id in IRQ handler Commit 31a7a0bbeb00 ("dpaa2-switch: add bounds check for if_id in IRQ handler") introduces a range check for if_id to avoid an out-of-bounds access. If an out-of-bounds if_id is detected, the interrupt status is not cleared. This may result in an interrupt storm. Clear the interrupt status after detecting an out-of-bounds if_id to avoid the problem. Found by an experimental AI code review agent at Google.

Vulnerability class: Buffer Overflow

EPSS: 0.001 (2.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Linux — versions 6.1.163, 1b381a638e1851d8cfdfe08ed9cdbec5295b18c9, 6.12.77
  • Linux Linux_kernel — versions 6.19, 7.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-23422?
CVE-2026-23422 is a high-severity vulnerability in Linux, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-04-03.
How severe is CVE-2026-23422?
High severity. CVSS v3 base score is 7.8 out of 10.