What’s Vulnerable › Vulnerabilities

CVE-2026-23180: dpaa2-switch: add bounds check for if_id in IRQ handler

• Severity: high (CVSS 7.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-14 · updated 2026-10-19
• Weakness: CWE-125

Description

In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: add bounds check for if_id in IRQ handler The IRQ handler extracts if_id from the upper 16 bits of the hardware status register and uses it to index into ethsw->ports[] without validation. Since if_id can be any 16-bit value (0-65535) but the ports array is only allocated with sw_attr.num_ifs elements, this can lead to an out-of-bounds read potentially. Add a bounds check before accessing the array, consistent with the existing validation in dpaa2_switch_rx().

Affected products

• Linux kernel: 5.15 — fixed in 6.19

How to fix

Upgrade to a fixed version: Linux kernel 6.19. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1b381a638e1851d8cfdfe08ed9cdbec5295b18c9
• https://git.kernel.org/stable/c/2447edc367800ba914acf7ddd5d250416b45fb31
• https://git.kernel.org/stable/c/31a7a0bbeb006bac2d9c81a2874825025214b6d8
• https://git.kernel.org/stable/c/34b56c16efd61325d80bf1d780d0e176be662f59
• https://git.kernel.org/stable/c/77611cab5bdfff7a070ae574bbfba20a1de99d1b
• https://git.kernel.org/stable/c/f89e33c9c37f0001b730e23b3b05ab7b1ecface2

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